Re: [M100] Model T clock doubler

[Stephen Adolph]

Hi all,
Just a quick note to say I've uploaded a set of information to enable
building and installation in M100 of the 1x2x clock doubler board Version
4.6.
Gerbers, images, schematic, Eagle design files, BOM, how-tos.
https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T
Interested folks can give it a try and let me know what needs improvement.
Next up - Olivetti M10, Tandy 200, Tandy 102, PC-8201  in more or less that
order.

cheers
Steve



On Sat, Nov 18, 2023 at 10:54 AM Stephen Adolph 
wrote:

> Hi everyone,
>
> I've been working towards finishing off my project for increasing the
> speed of the Model T laptops.  The idea is to create a (relatively) easy to
> make and install solution that allows the user to switch the clock rate
> from 2.5 MHz to 5 MHz.
> This is really nice on the 40x8 LCD machines.
>
> The universal software command to switch clock rate is
> OUT 85,1 for 2x mode and
> OUT 85,0 for 1x mode.
>
> Of course the Model T is not designed for this, but in my experience so
> far, it seems reliable.  I really like the upgrade and plan to install in
> all my laptops. Being able to operate in nominal clock mode is of course
> very useful because you may find some software to be incompatible.
>
> Models I have upgraded to date:
> * M100 (NA, early variant, not UK)
> * T102
> * T200
> * NEC PC-8201/8201a
> * Olivetti M10
>
> I am publishing all the information needed to DIY this upgrade. I don't
> have any plans to make these upgrades.  Consider this upgrade only if you
> are comfortable with soldering surface mount parts, and with making minor
> modifications to your laptop.
>
> Upgrades that are done and in the process of documentation are M100, T200,
> NEC.  Upgrades that need a new PCB design still are T102 and M10.  All
> information will be at this site:
>
> https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T
>
> I am publishing
> * PCB designs for the clock doubler board (there are a few variants)
> * schematic
> * bill of materials for parts you need
> * documentation for building the clock doubler
> * installation documentation per laptop
>
> Things I have discovered while developing this;
> 1.  Power consumption goes up by about 20% when you run at 2x clock.
> 2.  Depending on the speed of your SRAM,  you may need to implement a
> modification to speed that up.  Each model has a specific mod you need.
> 3.  In M100 with the custom socket pinout, in most cases you need to
> upgrade your Main ROM to something faster.  This usually involves an
> adapter board and an EPROM.
> 4.  In the Tandy 200, one must slow down the machine temporarily to access
> the RTC.  There is a specific change for that.
>
> Anyhow, as I complete a particular laptop, I'll post the needed files.
>
> Hopefully this will be of some interest for those inclined to play around
> with hardware.  I have no problem if anyone wants to take the design and
> improve it or change it.
>
> Feel free to contact me directly with questions.
>
> cheers
> Steve
>
>
>
>
>

Re: [M100] Model T clock doubler

[Stephen Adolph]

Yes one new part to add. I will update.
Steve

On Wednesday, November 29, 2023, Ken St. Cyr  wrote:

> Thanks - I'm going to order a set of prototypes boards as soon as you're
> ready to share. Will anything in the parts list change?
>
>
> //Ken S.
> --
> *From:* M100  on behalf of Stephen
> Adolph 
> *Sent:* Wednesday, November 29, 2023 1:13 PM
> *To:* m...@bitchin100.com 
> *Subject:* Re: [M100] Model T clock doubler
>
> Had to do a minor responsibility!  Will post in a week.
>
> On Wednesday, November 29, 2023, Ken St. Cyr  wrote:
>
> Hey Steve -
>
> I went to grab the gerbers from the upgrade page in the wiki, and the
> links aren't working. Would you mind sharing the file for the M100 board?
>
> Thanks!
> //Ken S.
> --
> *From:* M100  on behalf of Stephen
> Adolph 
> *Sent:* Saturday, November 18, 2023 10:54 AM
> *To:* m...@bitchin100.com 
> *Subject:* [M100] Model T clock doubler
>
> Hi everyone,
>
> I've been working towards finishing off my project for increasing the
> speed of the Model T laptops.  The idea is to create a (relatively) easy to
> make and install solution that allows the user to switch the clock rate
> from 2.5 MHz to 5 MHz.
> This is really nice on the 40x8 LCD machines.
>
> The universal software command to switch clock rate is
> OUT 85,1 for 2x mode and
> OUT 85,0 for 1x mode.
>
> Of course the Model T is not designed for this, but in my experience so
> far, it seems reliable.  I really like the upgrade and plan to install in
> all my laptops. Being able to operate in nominal clock mode is of course
> very useful because you may find some software to be incompatible.
>
> Models I have upgraded to date:
> * M100 (NA, early variant, not UK)
> * T102
> * T200
> * NEC PC-8201/8201a
> * Olivetti M10
>
> I am publishing all the information needed to DIY this upgrade. I don't
> have any plans to make these upgrades.  Consider this upgrade only if you
> are comfortable with soldering surface mount parts, and with making minor
> modifications to your laptop.
>
> Upgrades that are done and in the process of documentation are M100, T200,
> NEC.  Upgrades that need a new PCB design still are T102 and M10.  All
> information will be at this site:
>
> https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T
>
> I am publishing
> * PCB designs for the clock doubler board (there are a few variants)
> * schematic
> * bill of materials for parts you need
> * documentation for building the clock doubler
> * installation documentation per laptop
>
> Things I have discovered while developing this;
> 1.  Power consumption goes up by about 20% when you run at 2x clock.
> 2.  Depending on the speed of your SRAM,  you may need to implement a
> modification to speed that up.  Each model has a specific mod you need.
> 3.  In M100 with the custom socket pinout, in most cases you need to
> upgrade your Main ROM to something faster.  This usually involves an
> adapter board and an EPROM.
> 4.  In the Tandy 200, one must slow down the machine temporarily to access
> the RTC.  There is a specific change for that.
>
> Anyhow, as I complete a particular laptop, I'll post the needed files.
>
> Hopefully this will be of some interest for those inclined to play around
> with hardware.  I have no problem if anyone wants to take the design and
> improve it or change it.
>
> Feel free to contact me directly with questions.
>
> cheers
> Steve
>
>
>
>
>

Re: [M100] Model T clock doubler

[Ken St. Cyr]

Thanks - I'm going to order a set of prototypes boards as soon as you're ready 
to share. Will anything in the parts list change?

[cid:32f88c46-e6bc-44d1-a531-143b90c69e50]

//Ken S.

From: M100  on behalf of Stephen Adolph 

Sent: Wednesday, November 29, 2023 1:13 PM
To: m...@bitchin100.com 
Subject: Re: [M100] Model T clock doubler

Had to do a minor responsibility!  Will post in a week.

On Wednesday, November 29, 2023, Ken St. Cyr 
mailto:k...@stcyrfamily.net>> wrote:
Hey Steve -

I went to grab the gerbers from the upgrade page in the wiki, and the links 
aren't working. Would you mind sharing the file for the M100 board?

Thanks!
//Ken S.

From: M100 
mailto:m100-boun...@lists.bitchin100.com>> 
on behalf of Stephen Adolph mailto:twospru...@gmail.com>>
Sent: Saturday, November 18, 2023 10:54 AM
To: m...@bitchin100.com<mailto:m...@bitchin100.com> 
mailto:m...@bitchin100.com>>
Subject: [M100] Model T clock doubler

Hi everyone,

I've been working towards finishing off my project for increasing the speed of 
the Model T laptops.  The idea is to create a (relatively) easy to make and 
install solution that allows the user to switch the clock rate from 2.5 MHz to 
5 MHz.
This is really nice on the 40x8 LCD machines.

The universal software command to switch clock rate is
OUT 85,1 for 2x mode and
OUT 85,0 for 1x mode.

Of course the Model T is not designed for this, but in my experience so far, it 
seems reliable.  I really like the upgrade and plan to install in all my 
laptops. Being able to operate in nominal clock mode is of course very useful 
because you may find some software to be incompatible.

Models I have upgraded to date:
* M100 (NA, early variant, not UK)
* T102
* T200
* NEC PC-8201/8201a
* Olivetti M10

I am publishing all the information needed to DIY this upgrade. I don't have 
any plans to make these upgrades.  Consider this upgrade only if you are 
comfortable with soldering surface mount parts, and with making minor 
modifications to your laptop.

Upgrades that are done and in the process of documentation are M100, T200, NEC. 
 Upgrades that need a new PCB design still are T102 and M10.  All information 
will be at this site:

https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T

I am publishing
* PCB designs for the clock doubler board (there are a few variants)
* schematic
* bill of materials for parts you need
* documentation for building the clock doubler
* installation documentation per laptop

Things I have discovered while developing this;
1.  Power consumption goes up by about 20% when you run at 2x clock.
2.  Depending on the speed of your SRAM,  you may need to implement a 
modification to speed that up.  Each model has a specific mod you need.
3.  In M100 with the custom socket pinout, in most cases you need to upgrade 
your Main ROM to something faster.  This usually involves an adapter board and 
an EPROM.
4.  In the Tandy 200, one must slow down the machine temporarily to access the 
RTC.  There is a specific change for that.

Anyhow, as I complete a particular laptop, I'll post the needed files.

Hopefully this will be of some interest for those inclined to play around with 
hardware.  I have no problem if anyone wants to take the design and improve it 
or change it.

Feel free to contact me directly with questions.

cheers
Steve

Re: [M100] Model T clock doubler

[Stephen Adolph]

Had to do a minor responsibility!  Will post in a week.

On Wednesday, November 29, 2023, Ken St. Cyr  wrote:

> Hey Steve -
>
> I went to grab the gerbers from the upgrade page in the wiki, and the
> links aren't working. Would you mind sharing the file for the M100 board?
>
> Thanks!
> //Ken S.
> --
> *From:* M100  on behalf of Stephen
> Adolph 
> *Sent:* Saturday, November 18, 2023 10:54 AM
> *To:* m...@bitchin100.com 
> *Subject:* [M100] Model T clock doubler
>
> Hi everyone,
>
> I've been working towards finishing off my project for increasing the
> speed of the Model T laptops.  The idea is to create a (relatively) easy to
> make and install solution that allows the user to switch the clock rate
> from 2.5 MHz to 5 MHz.
> This is really nice on the 40x8 LCD machines.
>
> The universal software command to switch clock rate is
> OUT 85,1 for 2x mode and
> OUT 85,0 for 1x mode.
>
> Of course the Model T is not designed for this, but in my experience so
> far, it seems reliable.  I really like the upgrade and plan to install in
> all my laptops. Being able to operate in nominal clock mode is of course
> very useful because you may find some software to be incompatible.
>
> Models I have upgraded to date:
> * M100 (NA, early variant, not UK)
> * T102
> * T200
> * NEC PC-8201/8201a
> * Olivetti M10
>
> I am publishing all the information needed to DIY this upgrade. I don't
> have any plans to make these upgrades.  Consider this upgrade only if you
> are comfortable with soldering surface mount parts, and with making minor
> modifications to your laptop.
>
> Upgrades that are done and in the process of documentation are M100, T200,
> NEC.  Upgrades that need a new PCB design still are T102 and M10.  All
> information will be at this site:
>
> https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T
>
> I am publishing
> * PCB designs for the clock doubler board (there are a few variants)
> * schematic
> * bill of materials for parts you need
> * documentation for building the clock doubler
> * installation documentation per laptop
>
> Things I have discovered while developing this;
> 1.  Power consumption goes up by about 20% when you run at 2x clock.
> 2.  Depending on the speed of your SRAM,  you may need to implement a
> modification to speed that up.  Each model has a specific mod you need.
> 3.  In M100 with the custom socket pinout, in most cases you need to
> upgrade your Main ROM to something faster.  This usually involves an
> adapter board and an EPROM.
> 4.  In the Tandy 200, one must slow down the machine temporarily to access
> the RTC.  There is a specific change for that.
>
> Anyhow, as I complete a particular laptop, I'll post the needed files.
>
> Hopefully this will be of some interest for those inclined to play around
> with hardware.  I have no problem if anyone wants to take the design and
> improve it or change it.
>
> Feel free to contact me directly with questions.
>
> cheers
> Steve
>
>
>
>
>

Re: [M100] Model T clock doubler

[Ken St. Cyr]

Hey Steve -

I went to grab the gerbers from the upgrade page in the wiki, and the links 
aren't working. Would you mind sharing the file for the M100 board?

Thanks!
//Ken S.

From: M100  on behalf of Stephen Adolph 

Sent: Saturday, November 18, 2023 10:54 AM
To: m...@bitchin100.com 
Subject: [M100] Model T clock doubler

Hi everyone,

I've been working towards finishing off my project for increasing the speed of 
the Model T laptops.  The idea is to create a (relatively) easy to make and 
install solution that allows the user to switch the clock rate from 2.5 MHz to 
5 MHz.
This is really nice on the 40x8 LCD machines.

The universal software command to switch clock rate is
OUT 85,1 for 2x mode and
OUT 85,0 for 1x mode.

Of course the Model T is not designed for this, but in my experience so far, it 
seems reliable.  I really like the upgrade and plan to install in all my 
laptops. Being able to operate in nominal clock mode is of course very useful 
because you may find some software to be incompatible.

Models I have upgraded to date:
* M100 (NA, early variant, not UK)
* T102
* T200
* NEC PC-8201/8201a
* Olivetti M10

I am publishing all the information needed to DIY this upgrade. I don't have 
any plans to make these upgrades.  Consider this upgrade only if you are 
comfortable with soldering surface mount parts, and with making minor 
modifications to your laptop.

Upgrades that are done and in the process of documentation are M100, T200, NEC. 
 Upgrades that need a new PCB design still are T102 and M10.  All information 
will be at this site:

https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T

I am publishing
* PCB designs for the clock doubler board (there are a few variants)
* schematic
* bill of materials for parts you need
* documentation for building the clock doubler
* installation documentation per laptop

Things I have discovered while developing this;
1.  Power consumption goes up by about 20% when you run at 2x clock.
2.  Depending on the speed of your SRAM,  you may need to implement a 
modification to speed that up.  Each model has a specific mod you need.
3.  In M100 with the custom socket pinout, in most cases you need to upgrade 
your Main ROM to something faster.  This usually involves an adapter board and 
an EPROM.
4.  In the Tandy 200, one must slow down the machine temporarily to access the 
RTC.  There is a specific change for that.

Anyhow, as I complete a particular laptop, I'll post the needed files.

Hopefully this will be of some interest for those inclined to play around with 
hardware.  I have no problem if anyone wants to take the design and improve it 
or change it.

Feel free to contact me directly with questions.

cheers
Steve

Re: [M100] Model T clock doubler

[R IV]

Sent from my iPad

On Nov 22, 2023, at 11:00 PM, Joshua O'Keefe  wrote:


On Nov 22, 2023, at 9:01 PM, MikeS  wrote:

MVT100 Windows application???

I think that's referring to this program:

Club100 Member Upload 
Library
club100.org
[X]

To quote Steve: "This is a Windows program that is serial-fed terminal emulator 
specifically modified to match the M100 screen output. It enables an 80x24 
terminal screen. Compiled on Windows 10 using Visual Studio, based on .NET 4.8. 
Program is very early and possibly quite buggy"

Re: [M100] Model T clock doubler

[Brad Ackerman]

That’s .NET, which is the thing that used to be .NET Core.

.NET Framework has a subset available under the MIT License (previously 
source-available), but it’s very much a subset and can’t be built.

https://github.com/microsoft/referencesource

Yes, the naming is confusing.

> On Nov 23, 2023, at 12:24,   
> wrote:
> 
> Microsoft disagrees with you…
> 
> https://dotnet.microsoft.com/en-us/platform/open-source
>  
> Jeff Birt
>  
> From: M100  <mailto:m100-boun...@lists.bitchin100.com>> On Behalf Of Brad Ackerman
> Sent: Thursday, November 23, 2023 2:08 PM
> To: m...@bitchin100.com <mailto:m...@bitchin100.com>
> Subject: Re: [M100] Model T clock doubler
>  
> .NET Framework is not open source; Mono is a reimplementation of it — and 
> fine for legacy projects, but you get a much better experience with .NET Core 
> (which is open source).
> 
> 
>> On Nov 23, 2023, at 12:01, Peter Vollan > <mailto:dprogra...@gmail.com>> wrote:
>>  
>> is that what mono is?
>>  
>>  
>> On Thu, 23 Nov 2023 at 11:33, > <mailto:bir...@soigeneris.com>> wrote:
>>> The .NET framework is open source and there is a Linux version of .NET 
>>> called Mono. You might not have to change a thing...
>>> 
>>> Jeff Birt
>>> 
>>> -Original Message-
>>> From: M100 >> <mailto:m100-boun...@lists.bitchin100.com>> On Behalf Of Joshua O'Keefe
>>> Sent: Thursday, November 23, 2023 1:25 PM
>>> To: m...@bitchin100.com <mailto:m...@bitchin100.com>
>>> Subject: Re: [M100] Model T clock doubler
>>> 
>>> > On Nov 23, 2023, at 8:13 AM, Stephen Adolph >> > <mailto:twospru...@gmail.com>> wrote:
>>> > 
>>> > If it adds value, getting a linux version would be nice too I think.
>>> > I'm happy to share the files I compiled.
>>> 
>>> Hey Steve,
>>> 
>>> I'd love access to the source code to make an attempt at building a Linux 
>>> version.  I'm far from a .Net guy but I suspect the differences on the 
>>> serial port side won't be all that large, and everything else should 
>>> hopefully be "close enough."
>>> 

Re: [M100] Model T clock doubler

[birt_j]

Microsoft disagrees with you…

https://dotnet.microsoft.com/en-us/platform/open-source 

 

Jeff Birt

 

From: M100  On Behalf Of Brad Ackerman
Sent: Thursday, November 23, 2023 2:08 PM
To: m...@bitchin100.com
Subject: Re: [M100] Model T clock doubler

 

.NET Framework is not open source; Mono is a reimplementation of it — and fine 
for legacy projects, but you get a much better experience with .NET Core (which 
is open source).





On Nov 23, 2023, at 12:01, Peter Vollan mailto:dprogra...@gmail.com> > wrote:

 

is that what mono is?

 

 

On Thu, 23 Nov 2023 at 11:33, mailto:bir...@soigeneris.com> > wrote:

The .NET framework is open source and there is a Linux version of .NET called 
Mono. You might not have to change a thing...

Jeff Birt

-Original Message-
From: M100 mailto:m100-boun...@lists.bitchin100.com> > On Behalf Of Joshua O'Keefe
Sent: Thursday, November 23, 2023 1:25 PM
To: m...@bitchin100.com <mailto:m...@bitchin100.com> 
Subject: Re: [M100] Model T clock doubler

> On Nov 23, 2023, at 8:13 AM, Stephen Adolph  <mailto:twospru...@gmail.com> > wrote:
> 
> If it adds value, getting a linux version would be nice too I think.
> I'm happy to share the files I compiled.

Hey Steve,

I'd love access to the source code to make an attempt at building a Linux 
version.  I'm far from a .Net guy but I suspect the differences on the serial 
port side won't be all that large, and everything else should hopefully be 
"close enough."




 

Re: [M100] Model T clock doubler

[Stephen Adolph]

I will definitely post the source code at bitchin100 later today.


On Thursday, November 23, 2023, Joshua O'Keefe 
wrote:

> > On Nov 23, 2023, at 8:13 AM, Stephen Adolph 
> wrote:
> >
> > If it adds value, getting a linux version would be nice too I think.
> > I'm happy to share the files I compiled.
>
> Hey Steve,
>
> I'd love access to the source code to make an attempt at building a Linux
> version.  I'm far from a .Net guy but I suspect the differences on the
> serial port side won't be all that large, and everything else should
> hopefully be "close enough."

Re: [M100] Model T clock doubler

[Brad Ackerman]

.NET Framework is not open source; Mono is a reimplementation of it — and fine 
for legacy projects, but you get a much better experience with .NET Core (which 
is open source).

> On Nov 23, 2023, at 12:01, Peter Vollan  wrote:
> 
> is that what mono is?
> 
> 
> On Thu, 23 Nov 2023 at 11:33,  <mailto:bir...@soigeneris.com>> wrote:
>> The .NET framework is open source and there is a Linux version of .NET 
>> called Mono. You might not have to change a thing...
>> 
>> Jeff Birt
>> 
>> -Original Message-
>> From: M100 > <mailto:m100-boun...@lists.bitchin100.com>> On Behalf Of Joshua O'Keefe
>> Sent: Thursday, November 23, 2023 1:25 PM
>> To: m...@bitchin100.com <mailto:m...@bitchin100.com>
>> Subject: Re: [M100] Model T clock doubler
>> 
>> > On Nov 23, 2023, at 8:13 AM, Stephen Adolph > > <mailto:twospru...@gmail.com>> wrote:
>> > 
>> > If it adds value, getting a linux version would be nice too I think.
>> > I'm happy to share the files I compiled.
>> 
>> Hey Steve,
>> 
>> I'd love access to the source code to make an attempt at building a Linux 
>> version.  I'm far from a .Net guy but I suspect the differences on the 
>> serial port side won't be all that large, and everything else should 
>> hopefully be "close enough."
>> 
>> 
>> 

Re: [M100] Model T clock doubler

[Peter Vollan]

is that what mono is?


On Thu, 23 Nov 2023 at 11:33,  wrote:

> The .NET framework is open source and there is a Linux version of .NET
> called Mono. You might not have to change a thing...
>
> Jeff Birt
>
> -Original Message-
> From: M100  On Behalf Of Joshua O'Keefe
> Sent: Thursday, November 23, 2023 1:25 PM
> To: m...@bitchin100.com
> Subject: Re: [M100] Model T clock doubler
>
> > On Nov 23, 2023, at 8:13 AM, Stephen Adolph 
> wrote:
> >
> > If it adds value, getting a linux version would be nice too I think.
> > I'm happy to share the files I compiled.
>
> Hey Steve,
>
> I'd love access to the source code to make an attempt at building a Linux
> version.  I'm far from a .Net guy but I suspect the differences on the
> serial port side won't be all that large, and everything else should
> hopefully be "close enough."
>
>
>
>

Re: [M100] Model T clock doubler

[birt_j]

The .NET framework is open source and there is a Linux version of .NET called 
Mono. You might not have to change a thing...

Jeff Birt

-Original Message-
From: M100  On Behalf Of Joshua O'Keefe
Sent: Thursday, November 23, 2023 1:25 PM
To: m...@bitchin100.com
Subject: Re: [M100] Model T clock doubler

> On Nov 23, 2023, at 8:13 AM, Stephen Adolph  wrote:
> 
> If it adds value, getting a linux version would be nice too I think.
> I'm happy to share the files I compiled.

Hey Steve,

I'd love access to the source code to make an attempt at building a Linux 
version.  I'm far from a .Net guy but I suspect the differences on the serial 
port side won't be all that large, and everything else should hopefully be 
"close enough."

Re: [M100] Model T clock doubler

[Joshua O'Keefe]

> On Nov 23, 2023, at 8:13 AM, Stephen Adolph  wrote:
> 
> If it adds value, getting a linux version would be nice too I think.
> I'm happy to share the files I compiled.

Hey Steve,

I'd love access to the source code to make an attempt at building a Linux 
version.  I'm far from a .Net guy but I suspect the differences on the serial 
port side won't be all that large, and everything else should hopefully be 
"close enough."

Re: [M100] Model T clock doubler

[Stephen Adolph]

Joshua, it seems to be working fine to be honest.
As I left it, it runs on windows 10, but probably works on other windows
versions too.
If it adds value, getting a linux version would be nice too I think.
I'm happy to share the files I compiled.
Steve


On Thu, Nov 23, 2023 at 10:27 AM Joshua O'Keefe 
wrote:

> > On Nov 23, 2023, at 5:27 AM, Stephen Adolph 
> wrote:
> >
> > So now my windows machine has a terminal that obeys M100 screen codes,
> and character set.
>
> Since you're continuing to use the program, I'm curious how well it's been
> serving you.  Has this version mostly held up when you reach for it?  Your
> humble disclaimer about bugs aside, it sounds like the program has been a
> useful addition to your workflow.
>
> As you might recall, I'm a REXCPM owner, but I've been slow to pull the
> trigger so far on installation -- too many projects on the backlog! -- but
> if the terminal program has been fairly solid day to day that's an
> enticement to start my installation... And to work on trying to fire up the
> terminal program on the other platforms I use.

Re: [M100] Model T clock doubler

[Joshua O'Keefe]

> On Nov 23, 2023, at 5:27 AM, Stephen Adolph  wrote:
> 
> So now my windows machine has a terminal that obeys M100 screen codes, and 
> character set.

Since you're continuing to use the program, I'm curious how well it's been 
serving you.  Has this version mostly held up when you reach for it?  Your 
humble disclaimer about bugs aside, it sounds like the program has been a 
useful addition to your workflow.

As you might recall, I'm a REXCPM owner, but I've been slow to pull the trigger 
so far on installation -- too many projects on the backlog! -- but if the 
terminal program has been fairly solid day to day that's an enticement to start 
my installation... And to work on trying to fire up the terminal program on the 
other platforms I use.

Re: [M100] Model T clock doubler

[Mike Stein]

Ah, thanks!

Shoulda thought to look there!

On Thu, Nov 23, 2023 at 1:59 AM Joshua O'Keefe 
wrote:

> On Nov 22, 2023, at 9:01 PM, MikeS  wrote:
>
> MVT100 Windows application???
>
>
> I think that's referring to this program:
> Club100 Member Upload Library
> 
> club100.org
> 
>
> 
> 
>
> To quote Steve: "This is a Windows program that is serial-fed terminal
> emulator specifically modified to match the M100 screen output. It enables
> an 80x24 terminal screen. Compiled on Windows 10 using Visual Studio, based
> on .NET 4.8. Program is very early and possibly quite buggy"
>
>

Re: [M100] Model T clock doubler

[Stephen Adolph]

Thanks Joshua, that's the one.
I was switching my monitor between regular use and modelT use, and having
the Geoff serial terminal as the intermediary was frustrating a bit.

So now my windows machine has a terminal that obeys M100 screen codes, and
character set.

..steve


On Thursday, November 23, 2023, Joshua O'Keefe 
wrote:

> On Nov 22, 2023, at 9:01 PM, MikeS  wrote:
>
> MVT100 Windows application???
>
>
> I think that's referring to this program:
> Club100 Member Upload Library
> 
> club100.org
> 
>
> 
> 
>
> To quote Steve: "This is a Windows program that is serial-fed terminal
> emulator specifically modified to match the M100 screen output. It enables
> an 80x24 terminal screen. Compiled on Windows 10 using Visual Studio, based
> on .NET 4.8. Program is very early and possibly quite buggy"
>
>

Re: [M100] Model T clock doubler

[Joshua O'Keefe]

> On Nov 22, 2023, at 9:01 PM, MikeS  wrote:
> 
> MVT100 Windows application???

I think that's referring to this program:
http://club100.org/memfiles/index.php?direction=&order=&directory=Steve%20Adolph/MVT100%20for%20PC&;
To quote Steve: "This is a Windows program that is serial-fed terminal emulator 
specifically modified to match the M100 screen output. It enables an 80x24 
terminal screen. Compiled on Windows 10 using Visual Studio, based on .NET 4.8. 
Program is very early and possibly quite buggy"

Re: [M100] Model T clock doubler

[MikeS]

MVT100 Windows application???
  - Original Message - 
  From: Stephen Adolph 
  To: m...@bitchin100.com 
  Sent: Tuesday, November 21, 2023 11:53 AM
  Subject: Re: [M100] Model T clock doubler


  Ken I will try to complete a package of info for m100 in time!


  You could consider the BCR hack for serial comms over BCR port.  The VT100 
driver on M100 plus my MVT100 windows application would allow you to demo using 
the PC as an 80x25  monitor for M100.  No other hardware needed.


  Cheers Steve

  On Tuesday, November 21, 2023, Ken St. Cyr  wrote:

Amazing work, Steve! I've been thinking about doing an M100 mod 
extravaganza video, so this is one mod that I definitely want to do for that 
project. I'll likely be checking it out over Christmas break in a few weeks.   


//Ken S



From: M100  on behalf of Brian White 

Sent: Monday, November 20, 2023 12:46:06 PM
To: m...@bitchin100.com 
Subject: Re: [M100] Model T clock doubler 

Hah, all of my own boards get to about v 12 before I'm mostly happy, and 
then continue polishing for several more. It's almost like software, never 
really done.


bkw


On Sun, Nov 19, 2023, 7:56 PM Stephen Adolph  wrote:

  I jumped the gun a bit, needed to redo the boards and change the circuit. 
 

  On Sunday, November 19, 2023, Brian K. White  wrote:

None of the file links work, but I'm sure it *will* be awesome.
Sounds super.

On 11/18/23 10:54, Stephen Adolph wrote:

  Hi everyone,

  I've been working towards finishing off my project for increasing the 
speed of the Model T laptops.  The idea is to create a (relatively) easy to 
make and install solution that allows the user to switch the clock rate from 
2.5 MHz to 5 MHz.
  This is really nice on the 40x8 LCD machines.

  The universal software command to switch clock rate is
  OUT 85,1 for 2x mode and
  OUT 85,0 for 1x mode.

  Of course the Model T is not designed for this, but in my experience 
so far, it seems reliable.  I really like the upgrade and plan to install in 
all my laptops. Being able to operate in nominal clock mode is of course very 
useful because you may find some software to be incompatible.

  Models I have upgraded to date:
  * M100 (NA, early variant, not UK)
  * T102
  * T200
  * NEC PC-8201/8201a
  * Olivetti M10

  I am publishing all the information needed to DIY this upgrade. I 
don't have any plans to make these upgrades.  Consider this upgrade only if you 
are comfortable with soldering surface mount parts, and with making minor 
modifications to your laptop.

  Upgrades that are done and in the process of documentation are M100, 
T200, NEC.  Upgrades that need a new PCB design still are T102 and M10.  All 
information will be at this site:

  https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T 
<https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T>

  I am publishing
  * PCB designs for the clock doubler board (there are a few variants)
  * schematic
  * bill of materials for parts you need
  * documentation for building the clock doubler
  * installation documentation per laptop

  Things I have discovered while developing this;
  1.  Power consumption goes up by about 20% when you run at 2x clock.
  2.  Depending on the speed of your SRAM,  you may need to implement a 
modification to speed that up.  Each model has a specific mod you need.
  3.  In M100 with the custom socket pinout, in most cases you need to 
upgrade your Main ROM to something faster.  This usually involves an adapter 
board and an EPROM.
  4.  In the Tandy 200, one must slow down the machine temporarily to 
access the RTC.  There is a specific change for that.

  Anyhow, as I complete a particular laptop, I'll post the needed files.

  Hopefully this will be of some interest for those inclined to play 
around with hardware.  I have no problem if anyone wants to take the design and 
improve it or change it.

  Feel free to contact me directly with questions.

  cheers
  Steve






-- 
bkw

Re: [M100] Model T clock doubler

[Ken St. Cyr]

I appreciate it, Steve! I also don’t mind figuring some stuff out myself along 
the way if the info isn't complete... plus I know where to go to ask for help 😁

Regarding the BCR hack - I showed that one in my last M100 video, Going Online 
with the Tandy Model 100<https://youtu.be/tCyuzZlxT3w>.

I'll have to take a look at your MVT100 windows app - I don't think I was aware 
of it, but it sounds like a cool idea and worth showing off!

//Ken

From: M100  on behalf of Stephen Adolph 

Sent: Tuesday, November 21, 2023 10:53 AM
To: m...@bitchin100.com 
Subject: Re: [M100] Model T clock doubler

Ken I will try to complete a package of info for m100 in time!

You could consider the BCR hack for serial comms over BCR port.  The VT100 
driver on M100 plus my MVT100 windows application would allow you to demo using 
the PC as an 80x25  monitor for M100.  No other hardware needed.

Cheers Steve

On Tuesday, November 21, 2023, Ken St. Cyr 
mailto:k...@stcyrfamily.net>> wrote:
Amazing work, Steve! I've been thinking about doing an M100 mod extravaganza 
video, so this is one mod that I definitely want to do for that project. I'll 
likely be checking it out over Christmas break in a few weeks.

//Ken S

From: M100 
mailto:m100-boun...@lists.bitchin100.com>> 
on behalf of Brian White mailto:b.kenyo...@gmail.com>>
Sent: Monday, November 20, 2023 12:46:06 PM
To: m...@bitchin100.com<mailto:m...@bitchin100.com> 
mailto:m...@bitchin100.com>>
Subject: Re: [M100] Model T clock doubler

Hah, all of my own boards get to about v 12 before I'm mostly happy, and then 
continue polishing for several more. It's almost like software, never really 
done.

bkw

On Sun, Nov 19, 2023, 7:56 PM Stephen Adolph 
mailto:twospru...@gmail.com>> wrote:
I jumped the gun a bit, needed to redo the boards and change the circuit.

On Sunday, November 19, 2023, Brian K. White 
mailto:b.kenyo...@gmail.com>> wrote:
None of the file links work, but I'm sure it *will* be awesome.
Sounds super.

On 11/18/23 10:54, Stephen Adolph wrote:
Hi everyone,

I've been working towards finishing off my project for increasing the speed of 
the Model T laptops.  The idea is to create a (relatively) easy to make and 
install solution that allows the user to switch the clock rate from 2.5 MHz to 
5 MHz.
This is really nice on the 40x8 LCD machines.

The universal software command to switch clock rate is
OUT 85,1 for 2x mode and
OUT 85,0 for 1x mode.

Of course the Model T is not designed for this, but in my experience so far, it 
seems reliable.  I really like the upgrade and plan to install in all my 
laptops. Being able to operate in nominal clock mode is of course very useful 
because you may find some software to be incompatible.

Models I have upgraded to date:
* M100 (NA, early variant, not UK)
* T102
* T200
* NEC PC-8201/8201a
* Olivetti M10

I am publishing all the information needed to DIY this upgrade. I don't have 
any plans to make these upgrades.  Consider this upgrade only if you are 
comfortable with soldering surface mount parts, and with making minor 
modifications to your laptop.

Upgrades that are done and in the process of documentation are M100, T200, NEC. 
 Upgrades that need a new PCB design still are T102 and M10.  All information 
will be at this site:

https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T 
<https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T>

I am publishing
* PCB designs for the clock doubler board (there are a few variants)
* schematic
* bill of materials for parts you need
* documentation for building the clock doubler
* installation documentation per laptop

Things I have discovered while developing this;
1.  Power consumption goes up by about 20% when you run at 2x clock.
2.  Depending on the speed of your SRAM,  you may need to implement a 
modification to speed that up.  Each model has a specific mod you need.
3.  In M100 with the custom socket pinout, in most cases you need to upgrade 
your Main ROM to something faster.  This usually involves an adapter board and 
an EPROM.
4.  In the Tandy 200, one must slow down the machine temporarily to access the 
RTC.  There is a specific change for that.

Anyhow, as I complete a particular laptop, I'll post the needed files.

Hopefully this will be of some interest for those inclined to play around with 
hardware.  I have no problem if anyone wants to take the design and improve it 
or change it.

Feel free to contact me directly with questions.

cheers
Steve





--
bkw

Re: [M100] Model T clock doubler

[Walt Perko]

Hi, 

 

As somebody that is trying to document a lot of lost, and new configurations
for the Altair 8800 and IMSAI 8080 computers … it’s a lot of work.  I have
some help from others in the S100 Google group to provide software and
documentation , but still, it’s a lot of work making it easy for beginners.


 

As a TRS-80 Model 100 owner I have to add my 2Cents which is, 

 

I suggest you make a series of video shorts.  Pick one thing, one subject,
like What to Buy and How to install the hardware.  Then the next video is
“Setting up and Using the Software” for that.  

 

Talk slow … take your time so people can easily scroll the play-bar back ‘n
forth to find parts in the video they need to review once or twice as they
switch to their computer to implement what is happening in the video.  

 

Too many demo videos go too fast and worse, include too many different
things to do.  

 

Good luck!  

 

 

 

 


==
C U L8r,  °|°  Walt Perko  °|°"Kids ... teach them the good stuff,
and they still learn the bad stuff on their own."

http://www.R2Pv1.com/  RoboGuts™ Intelligent content for 3D printing making
S.T.E.A.M. education better, easier and more affordable  

 

Experiments to learn how to use various Electronic Components, Structured
Computer Programming, Phonemes for Speech &Song in any language, and Art.


 "The World Needs a New Economic Model"

==



Sent from the Cyber7 

 

 

From: M100 On Behalf Of Ken St. Cyr
Sent: Tuesday, November 21, 2023 8:12 AM
To: m...@bitchin100.com
Subject: Re: [M100] Model T clock doubler

 

Amazing work, Steve! I've been thinking about doing an M100 mod extravaganza
video, so this is one mod that I definitely want to do for that project.
I'll likely be checking it out over Christmas break in a few weeks.   

 

//Ken S

  _  

From: M100 mailto:m100-boun...@lists.bitchin100.com> > on behalf of Brian White
mailto:b.kenyo...@gmail.com> >
Sent: Monday, November 20, 2023 12:46:06 PM
To: m...@bitchin100.com <mailto:m...@bitchin100.com>  mailto:m...@bitchin100.com> >
Subject: Re: [M100] Model T clock doubler 

 

Hah, all of my own boards get to about v 12 before I'm mostly happy, and
then continue polishing for several more. It's almost like software, never
really done.

bkw

 

On Sun, Nov 19, 2023, 7:56 PM Stephen Adolph mailto:twospru...@gmail.com> > wrote:

I jumped the gun a bit, needed to redo the boards and change the circuit.  

On Sunday, November 19, 2023, Brian K. White mailto:b.kenyo...@gmail.com> > wrote:

None of the file links work, but I'm sure it *will* be awesome.
Sounds super.

On 11/18/23 10:54, Stephen Adolph wrote:

Hi everyone,

I've been working towards finishing off my project for increasing the speed
of the Model T laptops.  The idea is to create a (relatively) easy to make
and install solution that allows the user to switch the clock rate from 2.5
MHz to 5 MHz.
This is really nice on the 40x8 LCD machines.

The universal software command to switch clock rate is
OUT 85,1 for 2x mode and
OUT 85,0 for 1x mode.

Of course the Model T is not designed for this, but in my experience so far,
it seems reliable.  I really like the upgrade and plan to install in all my
laptops. Being able to operate in nominal clock mode is of course very
useful because you may find some software to be incompatible.

Models I have upgraded to date:
* M100 (NA, early variant, not UK)
* T102
* T200
* NEC PC-8201/8201a
* Olivetti M10

I am publishing all the information needed to DIY this upgrade. I don't have
any plans to make these upgrades.  Consider this upgrade only if you are
comfortable with soldering surface mount parts, and with making minor
modifications to your laptop.

Upgrades that are done and in the process of documentation are M100, T200,
NEC.  Upgrades that need a new PCB design still are T102 and M10.  All
information will be at this site:

https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T
<https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T>

I am publishing
* PCB designs for the clock doubler board (there are a few variants)
* schematic
* bill of materials for parts you need
* documentation for building the clock doubler
* installation documentation per laptop

Things I have discovered while developing this;
1.  Power consumption goes up by about 20% when you run at 2x clock.
2.  Depending on the speed of your SRAM,  you may need to implement a
modification to speed that up.  Each model has a specific mod you need.
3.  In M100 with the custom socket pinout, in most cases you need to upgrade
your Main ROM to something faster.  This usually involves an adapter board
and an EPROM.
4.  In the

Re: [M100] Model T clock doubler

[Stephen Adolph]

Ken I will try to complete a package of info for m100 in time!

You could consider the BCR hack for serial comms over BCR port.  The VT100
driver on M100 plus my MVT100 windows application would allow you to demo
using the PC as an 80x25  monitor for M100.  No other hardware needed.

Cheers Steve

On Tuesday, November 21, 2023, Ken St. Cyr  wrote:

> Amazing work, Steve! I've been thinking about doing an M100 mod
> extravaganza video, so this is one mod that I definitely want to do for
> that project. I'll likely be checking it out over Christmas break in a few
> weeks.
>
> //Ken S
> --
> *From:* M100  on behalf of Brian White
> 
> *Sent:* Monday, November 20, 2023 12:46:06 PM
> *To:* m...@bitchin100.com 
> *Subject:* Re: [M100] Model T clock doubler
>
> Hah, all of my own boards get to about v 12 before I'm mostly happy, and
> then continue polishing for several more. It's almost like software, never
> really done.
>
> bkw
>
> On Sun, Nov 19, 2023, 7:56 PM Stephen Adolph  wrote:
>
> I jumped the gun a bit, needed to redo the boards and change the circuit.
>
> On Sunday, November 19, 2023, Brian K. White  wrote:
>
> None of the file links work, but I'm sure it *will* be awesome.
> Sounds super.
>
> On 11/18/23 10:54, Stephen Adolph wrote:
>
> Hi everyone,
>
> I've been working towards finishing off my project for increasing the
> speed of the Model T laptops.  The idea is to create a (relatively) easy to
> make and install solution that allows the user to switch the clock rate
> from 2.5 MHz to 5 MHz.
> This is really nice on the 40x8 LCD machines.
>
> The universal software command to switch clock rate is
> OUT 85,1 for 2x mode and
> OUT 85,0 for 1x mode.
>
> Of course the Model T is not designed for this, but in my experience so
> far, it seems reliable.  I really like the upgrade and plan to install in
> all my laptops. Being able to operate in nominal clock mode is of course
> very useful because you may find some software to be incompatible.
>
> Models I have upgraded to date:
> * M100 (NA, early variant, not UK)
> * T102
> * T200
> * NEC PC-8201/8201a
> * Olivetti M10
>
> I am publishing all the information needed to DIY this upgrade. I don't
> have any plans to make these upgrades.  Consider this upgrade only if you
> are comfortable with soldering surface mount parts, and with making minor
> modifications to your laptop.
>
> Upgrades that are done and in the process of documentation are M100, T200,
> NEC.  Upgrades that need a new PCB design still are T102 and M10.  All
> information will be at this site:
>
> https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T <
> https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T>
>
> I am publishing
> * PCB designs for the clock doubler board (there are a few variants)
> * schematic
> * bill of materials for parts you need
> * documentation for building the clock doubler
> * installation documentation per laptop
>
> Things I have discovered while developing this;
> 1.  Power consumption goes up by about 20% when you run at 2x clock.
> 2.  Depending on the speed of your SRAM,  you may need to implement a
> modification to speed that up.  Each model has a specific mod you need.
> 3.  In M100 with the custom socket pinout, in most cases you need to
> upgrade your Main ROM to something faster.  This usually involves an
> adapter board and an EPROM.
> 4.  In the Tandy 200, one must slow down the machine temporarily to access
> the RTC.  There is a specific change for that.
>
> Anyhow, as I complete a particular laptop, I'll post the needed files.
>
> Hopefully this will be of some interest for those inclined to play around
> with hardware.  I have no problem if anyone wants to take the design and
> improve it or change it.
>
> Feel free to contact me directly with questions.
>
> cheers
> Steve
>
>
>
>
>
> --
> bkw
>
>

Re: [M100] Model T clock doubler

[Ken St. Cyr]

Amazing work, Steve! I've been thinking about doing an M100 mod extravaganza 
video, so this is one mod that I definitely want to do for that project. I'll 
likely be checking it out over Christmas break in a few weeks.

//Ken S

From: M100  on behalf of Brian White 

Sent: Monday, November 20, 2023 12:46:06 PM
To: m...@bitchin100.com 
Subject: Re: [M100] Model T clock doubler

Hah, all of my own boards get to about v 12 before I'm mostly happy, and then 
continue polishing for several more. It's almost like software, never really 
done.

bkw

On Sun, Nov 19, 2023, 7:56 PM Stephen Adolph 
mailto:twospru...@gmail.com>> wrote:
I jumped the gun a bit, needed to redo the boards and change the circuit.

On Sunday, November 19, 2023, Brian K. White 
mailto:b.kenyo...@gmail.com>> wrote:
None of the file links work, but I'm sure it *will* be awesome.
Sounds super.

On 11/18/23 10:54, Stephen Adolph wrote:
Hi everyone,

I've been working towards finishing off my project for increasing the speed of 
the Model T laptops.  The idea is to create a (relatively) easy to make and 
install solution that allows the user to switch the clock rate from 2.5 MHz to 
5 MHz.
This is really nice on the 40x8 LCD machines.

The universal software command to switch clock rate is
OUT 85,1 for 2x mode and
OUT 85,0 for 1x mode.

Of course the Model T is not designed for this, but in my experience so far, it 
seems reliable.  I really like the upgrade and plan to install in all my 
laptops. Being able to operate in nominal clock mode is of course very useful 
because you may find some software to be incompatible.

Models I have upgraded to date:
* M100 (NA, early variant, not UK)
* T102
* T200
* NEC PC-8201/8201a
* Olivetti M10

I am publishing all the information needed to DIY this upgrade. I don't have 
any plans to make these upgrades.  Consider this upgrade only if you are 
comfortable with soldering surface mount parts, and with making minor 
modifications to your laptop.

Upgrades that are done and in the process of documentation are M100, T200, NEC. 
 Upgrades that need a new PCB design still are T102 and M10.  All information 
will be at this site:

https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T 
<https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T>

I am publishing
* PCB designs for the clock doubler board (there are a few variants)
* schematic
* bill of materials for parts you need
* documentation for building the clock doubler
* installation documentation per laptop

Things I have discovered while developing this;
1.  Power consumption goes up by about 20% when you run at 2x clock.
2.  Depending on the speed of your SRAM,  you may need to implement a 
modification to speed that up.  Each model has a specific mod you need.
3.  In M100 with the custom socket pinout, in most cases you need to upgrade 
your Main ROM to something faster.  This usually involves an adapter board and 
an EPROM.
4.  In the Tandy 200, one must slow down the machine temporarily to access the 
RTC.  There is a specific change for that.

Anyhow, as I complete a particular laptop, I'll post the needed files.

Hopefully this will be of some interest for those inclined to play around with 
hardware.  I have no problem if anyone wants to take the design and improve it 
or change it.

Feel free to contact me directly with questions.

cheers
Steve





--
bkw

Re: [M100] Model T clock doubler

[Brian White]

Hah, all of my own boards get to about v 12 before I'm mostly happy, and
then continue polishing for several more. It's almost like software, never
really done.

bkw

On Sun, Nov 19, 2023, 7:56 PM Stephen Adolph  wrote:

> I jumped the gun a bit, needed to redo the boards and change the circuit.
>
> On Sunday, November 19, 2023, Brian K. White  wrote:
>
>> None of the file links work, but I'm sure it *will* be awesome.
>> Sounds super.
>>
>> On 11/18/23 10:54, Stephen Adolph wrote:
>>
>>> Hi everyone,
>>>
>>> I've been working towards finishing off my project for increasing the
>>> speed of the Model T laptops.  The idea is to create a (relatively) easy to
>>> make and install solution that allows the user to switch the clock rate
>>> from 2.5 MHz to 5 MHz.
>>> This is really nice on the 40x8 LCD machines.
>>>
>>> The universal software command to switch clock rate is
>>> OUT 85,1 for 2x mode and
>>> OUT 85,0 for 1x mode.
>>>
>>> Of course the Model T is not designed for this, but in my experience so
>>> far, it seems reliable.  I really like the upgrade and plan to install in
>>> all my laptops. Being able to operate in nominal clock mode is of course
>>> very useful because you may find some software to be incompatible.
>>>
>>> Models I have upgraded to date:
>>> * M100 (NA, early variant, not UK)
>>> * T102
>>> * T200
>>> * NEC PC-8201/8201a
>>> * Olivetti M10
>>>
>>> I am publishing all the information needed to DIY this upgrade. I don't
>>> have any plans to make these upgrades.  Consider this upgrade only if you
>>> are comfortable with soldering surface mount parts, and with making minor
>>> modifications to your laptop.
>>>
>>> Upgrades that are done and in the process of documentation are M100,
>>> T200, NEC.  Upgrades that need a new PCB design still are T102 and M10.
>>> All information will be at this site:
>>>
>>> https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T <
>>> https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T>
>>>
>>> I am publishing
>>> * PCB designs for the clock doubler board (there are a few variants)
>>> * schematic
>>> * bill of materials for parts you need
>>> * documentation for building the clock doubler
>>> * installation documentation per laptop
>>>
>>> Things I have discovered while developing this;
>>> 1.  Power consumption goes up by about 20% when you run at 2x clock.
>>> 2.  Depending on the speed of your SRAM,  you may need to implement a
>>> modification to speed that up.  Each model has a specific mod you need.
>>> 3.  In M100 with the custom socket pinout, in most cases you need to
>>> upgrade your Main ROM to something faster.  This usually involves an
>>> adapter board and an EPROM.
>>> 4.  In the Tandy 200, one must slow down the machine temporarily to
>>> access the RTC.  There is a specific change for that.
>>>
>>> Anyhow, as I complete a particular laptop, I'll post the needed files.
>>>
>>> Hopefully this will be of some interest for those inclined to play
>>> around with hardware.  I have no problem if anyone wants to take the design
>>> and improve it or change it.
>>>
>>> Feel free to contact me directly with questions.
>>>
>>> cheers
>>> Steve
>>>
>>>
>>>
>>>
>>>
>> --
>> bkw
>>
>>

Re: [M100] Model T clock doubler

[Stephen Adolph]

I jumped the gun a bit, needed to redo the boards and change the circuit.

On Sunday, November 19, 2023, Brian K. White  wrote:

> None of the file links work, but I'm sure it *will* be awesome.
> Sounds super.
>
> On 11/18/23 10:54, Stephen Adolph wrote:
>
>> Hi everyone,
>>
>> I've been working towards finishing off my project for increasing the
>> speed of the Model T laptops.  The idea is to create a (relatively) easy to
>> make and install solution that allows the user to switch the clock rate
>> from 2.5 MHz to 5 MHz.
>> This is really nice on the 40x8 LCD machines.
>>
>> The universal software command to switch clock rate is
>> OUT 85,1 for 2x mode and
>> OUT 85,0 for 1x mode.
>>
>> Of course the Model T is not designed for this, but in my experience so
>> far, it seems reliable.  I really like the upgrade and plan to install in
>> all my laptops. Being able to operate in nominal clock mode is of course
>> very useful because you may find some software to be incompatible.
>>
>> Models I have upgraded to date:
>> * M100 (NA, early variant, not UK)
>> * T102
>> * T200
>> * NEC PC-8201/8201a
>> * Olivetti M10
>>
>> I am publishing all the information needed to DIY this upgrade. I don't
>> have any plans to make these upgrades.  Consider this upgrade only if you
>> are comfortable with soldering surface mount parts, and with making minor
>> modifications to your laptop.
>>
>> Upgrades that are done and in the process of documentation are M100,
>> T200, NEC.  Upgrades that need a new PCB design still are T102 and M10.
>> All information will be at this site:
>>
>> https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T <
>> https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T>
>>
>> I am publishing
>> * PCB designs for the clock doubler board (there are a few variants)
>> * schematic
>> * bill of materials for parts you need
>> * documentation for building the clock doubler
>> * installation documentation per laptop
>>
>> Things I have discovered while developing this;
>> 1.  Power consumption goes up by about 20% when you run at 2x clock.
>> 2.  Depending on the speed of your SRAM,  you may need to implement a
>> modification to speed that up.  Each model has a specific mod you need.
>> 3.  In M100 with the custom socket pinout, in most cases you need to
>> upgrade your Main ROM to something faster.  This usually involves an
>> adapter board and an EPROM.
>> 4.  In the Tandy 200, one must slow down the machine temporarily to
>> access the RTC.  There is a specific change for that.
>>
>> Anyhow, as I complete a particular laptop, I'll post the needed files.
>>
>> Hopefully this will be of some interest for those inclined to play around
>> with hardware.  I have no problem if anyone wants to take the design and
>> improve it or change it.
>>
>> Feel free to contact me directly with questions.
>>
>> cheers
>> Steve
>>
>>
>>
>>
>>
> --
> bkw
>
>

Re: [M100] Model T clock doubler

[Brian K. White]

None of the file links work, but I'm sure it *will* be awesome.
Sounds super.

On 11/18/23 10:54, Stephen Adolph wrote:

Hi everyone,

I've been working towards finishing off my project for increasing the 
speed of the Model T laptops.  The idea is to create a (relatively) easy 
to make and install solution that allows the user to switch the clock 
rate from 2.5 MHz to 5 MHz.

This is really nice on the 40x8 LCD machines.

The universal software command to switch clock rate is
OUT 85,1 for 2x mode and
OUT 85,0 for 1x mode.

Of course the Model T is not designed for this, but in my experience so 
far, it seems reliable.  I really like the upgrade and plan to install 
in all my laptops. Being able to operate in nominal clock mode is of 
course very useful because you may find some software to be incompatible.


Models I have upgraded to date:
* M100 (NA, early variant, not UK)
* T102
* T200
* NEC PC-8201/8201a
* Olivetti M10

I am publishing all the information needed to DIY this upgrade. I don't 
have any plans to make these upgrades.  Consider this upgrade only if 
you are comfortable with soldering surface mount parts, and with making 
minor modifications to your laptop.


Upgrades that are done and in the process of documentation are M100, 
T200, NEC.  Upgrades that need a new PCB design still are T102 and M10.  
All information will be at this site:


https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T 



I am publishing
* PCB designs for the clock doubler board (there are a few variants)
* schematic
* bill of materials for parts you need
* documentation for building the clock doubler
* installation documentation per laptop

Things I have discovered while developing this;
1.  Power consumption goes up by about 20% when you run at 2x clock.
2.  Depending on the speed of your SRAM,  you may need to implement a 
modification to speed that up.  Each model has a specific mod you need.
3.  In M100 with the custom socket pinout, in most cases you need to 
upgrade your Main ROM to something faster.  This usually involves an 
adapter board and an EPROM.
4.  In the Tandy 200, one must slow down the machine temporarily to 
access the RTC.  There is a specific change for that.


Anyhow, as I complete a particular laptop, I'll post the needed files.

Hopefully this will be of some interest for those inclined to play 
around with hardware.  I have no problem if anyone wants to take the 
design and improve it or change it.


Feel free to contact me directly with questions.

cheers
Steve






--
bkw

[M100] Model T clock doubler

[Stephen Adolph]

Hi everyone,

I've been working towards finishing off my project for increasing the speed
of the Model T laptops.  The idea is to create a (relatively) easy to make
and install solution that allows the user to switch the clock rate from 2.5
MHz to 5 MHz.
This is really nice on the 40x8 LCD machines.

The universal software command to switch clock rate is
OUT 85,1 for 2x mode and
OUT 85,0 for 1x mode.

Of course the Model T is not designed for this, but in my experience so
far, it seems reliable.  I really like the upgrade and plan to install in
all my laptops. Being able to operate in nominal clock mode is of course
very useful because you may find some software to be incompatible.

Models I have upgraded to date:
* M100 (NA, early variant, not UK)
* T102
* T200
* NEC PC-8201/8201a
* Olivetti M10

I am publishing all the information needed to DIY this upgrade. I don't
have any plans to make these upgrades.  Consider this upgrade only if you
are comfortable with soldering surface mount parts, and with making minor
modifications to your laptop.

Upgrades that are done and in the process of documentation are M100, T200,
NEC.  Upgrades that need a new PCB design still are T102 and M10.  All
information will be at this site:

https://bitchin100.com/wiki/index.php?title=5MHZ_upgrade_for_Model_T

I am publishing
* PCB designs for the clock doubler board (there are a few variants)
* schematic
* bill of materials for parts you need
* documentation for building the clock doubler
* installation documentation per laptop

Things I have discovered while developing this;
1.  Power consumption goes up by about 20% when you run at 2x clock.
2.  Depending on the speed of your SRAM,  you may need to implement a
modification to speed that up.  Each model has a specific mod you need.
3.  In M100 with the custom socket pinout, in most cases you need to
upgrade your Main ROM to something faster.  This usually involves an
adapter board and an EPROM.
4.  In the Tandy 200, one must slow down the machine temporarily to access
the RTC.  There is a specific change for that.

Anyhow, as I complete a particular laptop, I'll post the needed files.

Hopefully this will be of some interest for those inclined to play around
with hardware.  I have no problem if anyone wants to take the design and
improve it or change it.

Feel free to contact me directly with questions.

cheers
Steve