Re: [M100] Any idea what's attached to this Model 100?

[Lee Kelley]

It has "bubble memory" unit's in it.

On Sun, Jun 28, 2020 at 12:02 AM Chris Fezzler  wrote:

> Booster Pak is good call but doesn't look like one exactly - unless they
> had two cases.
>
> On Sunday, June 28, 2020, 12:06:35 AM EDT, Ken Pettit 
> wrote:
>
>
> Looks like a piece of wood with a piece of cushioning fabric inbetween to
> me.  How's that for speculation?  :)
>
> Ken
>
> On 6/27/20 8:37 PM, Gary Weber wrote:
>
> Can anyone speculate what's attached to the bottom of this Model 100
> listed for sale?
>
> At first I thought "Bookster Pak", but it doesn't have the clips on the
> side, plus it has green & red LEDs on the front and what looks like a
> cut-off cable connector on the back.  The whole unit looks like it might
> have been flood-damaged actually, from the amount of gunk on it...
>
>
> https://www.ebay.com/itm/Vintage-Radio-Shack-TRS-80-Model-100-Portable-Computer/254637209666?hash=item3b498f7842:g:rIQAAOSw4lte992V
>
>
> --
> Gary Weber
> g...@web8201.com
>
>
>

-- 
*"I will never in my lifetime make a film that cannot be seen by the whole
family"*  Arther P. Jacobs

Re: [M100] Any idea what's attached to this Model 100?

[Chris Fezzler]

 Booster Pak is good call but doesn't look like one exactly - unless they had 
two cases.
On Sunday, June 28, 2020, 12:06:35 AM EDT, Ken Pettit  
wrote:  
 
  Looks like a piece of wood with a piece of cushioning fabric inbetween to me. 
 How's that for speculation?  :)
 
 Ken
 
 On 6/27/20 8:37 PM, Gary Weber wrote:
  
 Can anyone speculate what's attached to the bottom of this Model 100 listed 
for sale? 
  At first I thought "Bookster Pak", but it doesn't have the clips on the side, 
plus it has green & red LEDs on the front and what looks like a cut-off cable 
connector on the back.  The whole unit looks like it might have been 
flood-damaged actually, from the amount of gunk on it... 
  
https://www.ebay.com/itm/Vintage-Radio-Shack-TRS-80-Model-100-Portable-Computer/254637209666?hash=item3b498f7842:g:rIQAAOSw4lte992V
  
 
  -- 
 Gary Weber
 g...@web8201.com

 
   

Re: [M100] Any idea what's attached to this Model 100?

[Ken Pettit]

OH, THAT!  I was looking too far down at the table it was sitting on.  
Either that or my eyes just aren't what they used to be :)


Ken

On 6/27/20 9:22 PM, Gary Weber wrote:
That's some fancy piece of wood indeed!  Complete with LEDs and even a 
barrel connector...


On Sat, Jun 27, 2020 at 9:06 PM Ken Pettit > wrote:


Looks like a piece of wood with a piece of cushioning fabric
inbetween to me.  How's that for speculation?  :)

Ken

On 6/27/20 8:37 PM, Gary Weber wrote:

Can anyone speculate what's attached to the bottom of this Model
100 listed for sale?

At first I thought "Bookster Pak", but it doesn't have the clips
on the side, plus it has green & red LEDs on the front and what
looks like a cut-off cable connector on the back.  The whole unit
looks like it might have been flood-damaged actually, from the
amount of gunk on it...


https://www.ebay.com/itm/Vintage-Radio-Shack-TRS-80-Model-100-Portable-Computer/254637209666?hash=item3b498f7842:g:rIQAAOSw4lte992V


-- 
Gary Weber

g...@web8201.com 

Re: [M100] Any idea what's attached to this Model 100?

[Gary Hammond]

Is it some form of interface to some specialist equipment? It says BSH 942 on 
the side…are there any hospitals that would correspond to BSH?

From: M100  On Behalf Of Gary Weber
Sent: Sunday, 28 June 2020 3:37 PM
To: m...@bitchin100.com
Subject: [M100] Any idea what's attached to this Model 100?

Can anyone speculate what's attached to the bottom of this Model 100 listed for 
sale?

At first I thought "Bookster Pak", but it doesn't have the clips on the side, 
plus it has green & red LEDs on the front and what looks like a cut-off cable 
connector on the back.  The whole unit looks like it might have been 
flood-damaged actually, from the amount of gunk on it...

https://www.ebay.com/itm/Vintage-Radio-Shack-TRS-80-Model-100-Portable-Computer/254637209666?hash=item3b498f7842:g:rIQAAOSw4lte992V

--
Gary Weber
g...@web8201.com

Re: [M100] Any idea what's attached to this Model 100?

[Gary Weber]

That's some fancy piece of wood indeed!  Complete with LEDs and even a
barrel connector...

On Sat, Jun 27, 2020 at 9:06 PM Ken Pettit  wrote:

> Looks like a piece of wood with a piece of cushioning fabric inbetween to
> me.  How's that for speculation?  :)
>
> Ken
>
> On 6/27/20 8:37 PM, Gary Weber wrote:
>
> Can anyone speculate what's attached to the bottom of this Model 100
> listed for sale?
>
> At first I thought "Bookster Pak", but it doesn't have the clips on the
> side, plus it has green & red LEDs on the front and what looks like a
> cut-off cable connector on the back.  The whole unit looks like it might
> have been flood-damaged actually, from the amount of gunk on it...
>
>
> https://www.ebay.com/itm/Vintage-Radio-Shack-TRS-80-Model-100-Portable-Computer/254637209666?hash=item3b498f7842:g:rIQAAOSw4lte992V
>
>
> --
> Gary Weber
> g...@web8201.com
>
>
>

Re: [M100] Any idea what's attached to this Model 100?

[Ken Pettit]

Looks like a piece of wood with a piece of cushioning fabric inbetween 
to me.  How's that for speculation?  :)


Ken

On 6/27/20 8:37 PM, Gary Weber wrote:
Can anyone speculate what's attached to the bottom of this Model 100 
listed for sale?


At first I thought "Bookster Pak", but it doesn't have the clips on 
the side, plus it has green & red LEDs on the front and what looks 
like a cut-off cable connector on the back.  The whole unit looks like 
it might have been flood-damaged actually, from the amount of gunk on 
it...


https://www.ebay.com/itm/Vintage-Radio-Shack-TRS-80-Model-100-Portable-Computer/254637209666?hash=item3b498f7842:g:rIQAAOSw4lte992V 



--
Gary Weber
g...@web8201.com 

[M100] Any idea what's attached to this Model 100?

[Gary Weber]

Can anyone speculate what's attached to the bottom of this Model 100 listed
for sale?

At first I thought "Bookster Pak", but it doesn't have the clips on the
side, plus it has green & red LEDs on the front and what looks like a
cut-off cable connector on the back.  The whole unit looks like it might
have been flood-damaged actually, from the amount of gunk on it...

https://www.ebay.com/itm/Vintage-Radio-Shack-TRS-80-Model-100-Portable-Computer/254637209666?hash=item3b498f7842:g:rIQAAOSw4lte992V


-- 
Gary Weber
g...@web8201.com

Re: [M100] DVI Floppy drive or blanking cover

[Gregory McGill]

Yep black pla+
I also print a gotek case to fit in the 5.25" bay..

It works like the amiga version, except there's no software loader you have
to select the images on the drive, optionally a oled screen you can see the
whole file name on and also optionally a rotary encoder to select
otherwise buttons and you can load the disk images on a modern system they
are stored on a usb thumbdrive.. what you can do with them when you get
them there? no idea. I load flashfloppy firmware on them which is the most
versatile and feature rich firmware.

Greg

On Sat, Jun 27, 2020 at 4:04 PM James Zeun  wrote:

> Oh that would be handy! Guessing you'd print it in black filament?
>
> I know how gotek drives work on the Amiga, but how do they work in the
> DVI? is it possible to read the disk images on a modern system?
>
>
>
> On 27 Jun 2020, at 23:43, Gregory McGill wrote:
>
> I can 3d print one, or sell you a gotek to stick in there
>
>
> On Sat, Jun 27, 2020 at 4:21 AM James Zeun  wrote:
>
>>
>> Hey guys
>>
>> A random question, but thought it worth a shot.
>>
>> Does anyone have a spare 180k floppy drive or perhaps a blanking
>> cover for the DVI?
>>
>> At the moment I have a gaping hole in the front of my DVI and I'd
>> very much like to cover it up with something.
>>
>> Or if anyone can recommend a few models of floppy drive I might be
>> able to look for on t'old fleabay, that would also be helpful.
>>
>> Cheers
>> James
>>
>>
>

Re: [M100] DVI Floppy drive or blanking cover

[James Zeun]

Oh that would be handy! Guessing you'd print it in black filament?

I know how gotek drives work on the Amiga, but how do they work in  
the DVI? is it possible to read the disk images on a modern system?




On 27 Jun 2020, at 23:43, Gregory McGill wrote:


I can 3d print one, or sell you a gotek to stick in there


On Sat, Jun 27, 2020 at 4:21 AM James Zeun   
wrote:


Hey guys

A random question, but thought it worth a shot.

Does anyone have a spare 180k floppy drive or perhaps a blanking
cover for the DVI?

At the moment I have a gaping hole in the front of my DVI and I'd
very much like to cover it up with something.

Or if anyone can recommend a few models of floppy drive I might be
able to look for on t'old fleabay, that would also be helpful.

Cheers
James

Re: [M100] DVI Floppy drive or blanking cover

[Lee Kelley]

Or put in a CD drive only connected to power and play music with headphones
or speakers connected to the front of it

On Sat, Jun 27, 2020, 17:43 Gregory McGill  wrote:

> I can 3d print one, or sell you a gotek to stick in there
>
>
> On Sat, Jun 27, 2020 at 4:21 AM James Zeun  wrote:
>
>>
>> Hey guys
>>
>> A random question, but thought it worth a shot.
>>
>> Does anyone have a spare 180k floppy drive or perhaps a blanking
>> cover for the DVI?
>>
>> At the moment I have a gaping hole in the front of my DVI and I'd
>> very much like to cover it up with something.
>>
>> Or if anyone can recommend a few models of floppy drive I might be
>> able to look for on t'old fleabay, that would also be helpful.
>>
>> Cheers
>> James
>>
>>

Re: [M100] DVI Floppy drive or blanking cover

[Gregory McGill]

I can 3d print one, or sell you a gotek to stick in there


On Sat, Jun 27, 2020 at 4:21 AM James Zeun  wrote:

>
> Hey guys
>
> A random question, but thought it worth a shot.
>
> Does anyone have a spare 180k floppy drive or perhaps a blanking
> cover for the DVI?
>
> At the moment I have a gaping hole in the front of my DVI and I'd
> very much like to cover it up with something.
>
> Or if anyone can recommend a few models of floppy drive I might be
> able to look for on t'old fleabay, that would also be helpful.
>
> Cheers
> James
>
>

Re: [M100] Off Topic: NEC PC-8500/Starlet

[Chris Fezzler]

 I opened my NEC PC-8508A ROM/RAM Cartridge today.  It was, of course, just 
like your's pictured below but my ROM sockets (4) were white.  So clearly the 
NEC PC-8500 was designed to employ option ROMs.  Still not sure if any were 
made or if the Real Estate and Expert I & II program advertised were ROM-based. 
 
On Saturday, June 27, 2020, 01:16:07 AM EDT, Chris Fezzler 
 wrote:  
 
  From your pic, there are ROM sockets in the PC-8508A! I wondered if they 
offered any ROMs?  Never came across any.
On Friday, June 26, 2020, 11:33:00 PM EDT, John R. Hogerhuis 
 wrote:  
 
 

On Fri, Jun 26, 2020 at 7:20 PM Chris Fezzler  wrote:

Any NEC PC-8500/Starlet owners or folks familiar?To keep it short, in 64K Mode, 
all the 64K in the computer is assigned to the OS and all the RAM in the 
cartridge is for storage.  Is that correct?


I've never got it into all-RAM mode. Admittedly though I haven't tried that 
hard. I thought the point of that was to run CP/M, but the only way I know you 
can do that is with the floppy disk attached, that no one has. Theoretically 
you could probably do it with just the ROM/RAM cartridge. If someone has docs 
or files that would help.

I do believe I have the boot disk though. 
The NEC PC-8508A ROM/RAM Cartridge...is there a "ROM" socket in there?


I don't know. I will open it up.
Here are pictures:
https://bitchin100.com/wiki/index.php?title=NEC_8508A_RAM/ROM_Cartridge  

-- John.

Re: [M100] Noisy T102

[Erik van der Tier]

I’ve had my T102 open yesterday, the most recently replace caps were 54 and 55, 
and they are now still looking good. I did do some tests without display or 
keyboard connected. When I power on without either there was not a single noise 
to be heard. However, when I connect the display it comes back. I also found 
that the noise seems to come from the area of the low-power led, which is still 
always on even when connected to the AC adapter, so it would seem something 
might be up with the power supply to the display… The display does seem to work 
perfectly fine.

Cheers,
   Erik

PS: I also just gotten my hands on a pretty decent M100. This one seems to work 
fine as well, except for the P and [ ] keys. I also found some pretty crispy 
caps in there, so I’ll definitely have to recap it. 

> On 16 Jun 2020, at 13:31, Stephen Adolph  wrote:
> 
> That's interesting!
> Could be that one of the caps you replaced on the +5V line is now 
> microphonic, or the transformer caps.
> Which ones did you replace?
> It would be interesting to see if you can isolate it.  If you had some 
> alternative caps that you could try for the 3 you have changed, you could try 
> changing one at a time.
> 
> 
> On Tue, Jun 16, 2020 at 2:59 AM Erik van der Tier  > wrote:
> Hi All,
> 
> I’ve had to replace 3 caps on my trusty T102 as they were leaking (nasty as 
> they were fairly recent replacements). The surgery seemed to have worked, 
> except for increase noise. It’s the kind of noise where you can hear the 
> processing of the CPU, more when its busy and it seems to have clear 
> ‘structure’ to it in relation to what the T102 is doing.
> Is this a sign that the same or other caps are not ok? Does anyone have 
> experience with this. I really want to get this capacitor business over with 
> for once and at least a bunch of years (I’m having too much fun with the t102 
> to let it just die). 
> Any thoughts on how to fix this?
> 
> Cheers,
>Erik

Re: [M100] Off Topic: NEC PC-8500/Starlet

[Tom Dison]

As an owner of a Starlet, I have a 32k cartridge that lets me use the full
64k for CP/M. That's the only change I see.

I also have the expansion cartridge that lets you connect a monitor and a
floppy. I don't have the floppy (yet?), but I do have the monochrome cable
and have connected it to a composite monochrome monitor.

The major mistake they made is to only allow the memory cartridge OR the
expansion cartridge, not both. Of course, if I can every find the floppy
drive then I wouldn't need the RAM cartridge to give 64k to CP/M.

On Sat, Jun 27, 2020, 12:15 AM Gary Weber  wrote:

> The rumor I had heard way, way back in the day was that NEC had originally
> intended to release ROMware for those cartridges.  Not sure it ever
> happened.
>
> I'd like to believe they'd at least released the technical information on
> how those ROM sockets are mapped within memory.  We just need to find
> technical reference manuals covering the PC-8401A, 8500, and/or 8508A.
>  (Yeah, I know, I'm laughing out loud as well...)
>
>
>
>
>
> On Fri, Jun 26, 2020 at 8:33 PM John R. Hogerhuis 
> wrote:
>
>>
>>
>> On Fri, Jun 26, 2020 at 7:20 PM Chris Fezzler  wrote:
>>
>>> Any NEC PC-8500/Starlet owners or folks familiar?
>>> To keep it short, in 64K Mode, all the 64K in the computer is assigned
>>> to the OS and all the RAM in the cartridge is for storage.  Is that correct?
>>>
>>>
>> I've never got it into all-RAM mode. Admittedly though I haven't tried
>> that hard. I thought the point of that was to run CP/M, but the only way I
>> know you can do that is with the floppy disk attached, that no one has.
>> Theoretically you could probably do it with just the ROM/RAM cartridge. If
>> someone has docs or files that would help.
>>
>> I do believe I have the boot disk though.
>>
>>
>>> The NEC PC-8508A ROM/RAM Cartridge...is there a "ROM" socket in there?
>>>
>>>
>> I don't know. I will open it up.
>>
>> Here are pictures:
>>
>> https://bitchin100.com/wiki/index.php?title=NEC_8508A_RAM/ROM_Cartridge
>>
>> -- John.
>>
>

Re: [M100] Dock for T100

[James Zeun]

I think your referring to the DVI (Disk Video Interface)

I managed to get my hands on one of these earlier this year, they  
aren't bad for what they are (https://bytemyvdu.wordpress.com/ 
2020/03/28/tandy-trs-80-disk-video-interface/)


Before we had the REX, mComm and NADSbox, it certainly offered a  
route of expansion for the M100. Though it's not without some  
limitations, not sure I would have felt it was worth the money back  
in 1984.


Cheers
James


On 27 Jun 2020, at 10:07, Louis Lipp wrote:


Hello,
I saw a computer once, actually not a computer, but more like a  
dock, it had a single connector that looks like it was supposed to  
be socketed into one of the empty chip sockets. It had a monitor  
and if I remember well, it had a 5 1/4 disk drive as well. I'm not  
sure if it had any other outputs/inputs.

I am trying to remember the name of this device.
Do any of you recall?
Take care, Louis

[M100] DVI Floppy drive or blanking cover

[James Zeun]

Hey guys

A random question, but thought it worth a shot.

Does anyone have a spare 180k floppy drive or perhaps a blanking  
cover for the DVI?


At the moment I have a gaping hole in the front of my DVI and I'd  
very much like to cover it up with something.


Or if anyone can recommend a few models of floppy drive I might be  
able to look for on t'old fleabay, that would also be helpful.


Cheers
James

Re: [M100] Dock for T100

[Brian White]

http://tandy.wiki/Disk/Video_Interface

-- 
bkw

On Sat, Jun 27, 2020, 5:07 AM Louis Lipp  wrote:

> Hello,
> I saw a computer once, actually not a computer, but more like a dock, it
> had a single connector that looks like it was supposed to be socketed into
> one of the empty chip sockets. It had a monitor and if I remember well, it
> had a 5 1/4 disk drive as well. I'm not sure if it had any other
> outputs/inputs.
> I am trying to remember the name of this device.
> Do any of you recall?
> Take care, Louis
>

[M100] Dock for T100

[Louis Lipp]

Hello,
I saw a computer once, actually not a computer, but more like a dock, it
had a single connector that looks like it was supposed to be socketed into
one of the empty chip sockets. It had a monitor and if I remember well, it
had a 5 1/4 disk drive as well. I'm not sure if it had any other
outputs/inputs.
I am trying to remember the name of this device.
Do any of you recall?
Take care, Louis