A: m...@bitchin100.com
Rispondi a: m...@bitchin100.com
Oggetto: Re: [M100] dual CPU project
Count me psyched myself. I would love to have a Z80 machine in the M100 form
factor.
CAM
Count me psyched myself. I would love to have a Z80 machine in the M100 form
factor.
CAM
: Stephen Adolph
To: m...@bitchin100.com
Sent: Friday, June 05, 2020 4:04 PM
Subject: Re: [M100] dual CPU project
I am fully prepared for the idea that my projects are potentially for me only.
Just FYI, I just now ran Turbo Pascal on M100.
screen is blurry because it was sc
Bitchin'
:-)
yah I am quite satisfied with the effort, and encouraged. This idea
hatched a year ago and it fell from my active thinking for a while. Now
that CP/M is really here (beta unit being evaluated now), I became
interested in getting this to work again.
On Fri, Jun 5, 2020 at 4:23 PM Joshua O'Keefe
That's a really impressive achievement, Steve!
(please note picture and all the quoted messages except one are
removed)__
On Friday, June 5, 2020, 04:04:53 PM EDT, Stephen Adolph wrote:
I am fully prepared for the idea that
On Jun 5, 2020, at 1:04 PM, Stephen Adolph wrote:.
> Just FYI, I just now ran Turbo Pascal on M100.
From the perspective of someone outside the project, this visual evidence is
amazing!
Running Turbo Pascal is reason enough for me! Fond memories for me on Computer
Science classes
Sent:* Friday, June 05, 2020 10:44 AM
> *Subject:* Re: [M100] dual CPU project
>
> Hello all,
> Interesting update.
> So, I've been working on getting NSC800 AKA Z80 processor to work in the
> M100 such that it can be used in CP/M as an alternative processor.
>
> Great new
<mailto:twospru...@gmail.com>
*To:* m...@bitchin100.com <mailto:m...@bitchin100.com>
*Sent:* Friday, June 05, 2020 10:44 AM
*Subject:* Re: [M100] dual CPU project
Hello all,
Interesting update.
So, I've been working on getting NSC800 AKA Z80 proce
] dual CPU project
Hello all,
Interesting update.
So, I've been working on getting NSC800 AKA Z80 processor to work in the M100
such that it can be used in CP/M as an alternative processor.
Great news is that I now have a solution for actually running the M100 using
the NSC800
share the bus simultaneously, or is only
> one or the other (like a Commodore 128)?
>
> --
> *From:* M100 on behalf of Stephen
> Adolph
> *Sent:* Friday, June 5, 2020 10:44 AM
> *To:* m...@bitchin100.com
> *Subject:* Re: [M100] dual CPU projec
:44 AM
To: m...@bitchin100.com
Subject: Re: [M100] dual CPU project
Hello all,
Interesting update.
So, I've been working on getting NSC800 AKA Z80 processor to work in the M100
such that it can be used in CP/M as an alternative processor.
Great news is that I now have a solution for actually
Hello all,
Interesting update.
So, I've been working on getting NSC800 AKA Z80 processor to work in the
M100 such that it can be used in CP/M as an alternative processor.
Great news is that I now have a solution for actually running the M100
using the NSC800! Not that it really matters; there
I somewhat, vaguely recall this posting last summer from you. I had my mind on
other things as there were painters in the house and they were doing more
damage than good. That being said I would like to make this one statement very
clear concerning this project.
SIGN ME UP!!
Late last year I
: Re: [M100] dual CPU project
No, it is a plug in board but it plugs into the CPU socket (ahwhich
does not exist!)
On my bench system I did the work to take out the CPU and added a socket.
Then I plug an expansion card into it.
Good idea though about the system bus, I'll have to think
No, it is a plug in board but it plugs into the CPU socket (ahwhich
does not exist!)
On my bench system I did the work to take out the CPU and added a socket.
Then I plug an expansion card into it.
Good idea though about the system bus, I'll have to think about that.
I'm almost done a
Hey Steve,
Oh great! One more emulation I need to add to VirtualT! ;)
Nice work! How do you wire it it? System bus?
Ken
On 5/30/20 5:04 AM, Stephen Adolph wrote:
...and I just now this second got the NSC800 to run in the M100
successfully.
It is driving the LCD at the moment.
I think the
...and I just now this second got the NSC800 to run in the M100
successfully.
It is driving the LCD at the moment.
I think the interrupts are different, and more work to do, but it is
officially alive.
yay!
On Sat, May 30, 2020 at 6:32 AM William stewart
wrote:
> Stephen,
> Are you suggesting
yup, switchable so that CP/M can run Z80.
On Sat, May 30, 2020 at 6:32 AM William stewart
wrote:
> Stephen,
> Are you suggesting a swap of the 8085?
>
> Sent from my iPhone
>
> On May 29, 2020, at 7:46 AM, Stephen Adolph wrote:
>
> Reviving this thread.
> Now that we have a solid CP/M
Stephen,
Are you suggesting a swap of the 8085?
Sent from my iPhone
> On May 29, 2020, at 7:46 AM, Stephen Adolph wrote:
>
> Reviving this thread.
> Now that we have a solid CP/M application written in 8080, there should be a
> way to boot into CP/M using the NSC800.
> I dropped this
Reviving this thread.
Now that we have a solid CP/M application written in 8080, there should be
a way to boot into CP/M using the NSC800.
I dropped this project some time back but it is time to revive it, as a
processor swap would be a cleaner way to expanding the CP/M application
universe for
While looking for other possible uses for the 3d-printed modified molex
carrier and matching pcb, I discovered the Epson PX-8, which has a z80
and runs cp/m, so, I would guess that means there is even already at
least some sort of body of code to use cp/m on a device like this. I
guess that
I'm interested. I have a M100 I'd like to see
CP/M run on. Smack me up!
Sent from my iPhone
> On Jul 11, 2019, at 10:30 AM, Stephen Adolph wrote:
>
> Motivated by 2 things
> 1) discovery of the NSC800 Z80 processor that is 80C85 like
> 2) continuing to work in the direcition of CP/M
> 3) and
On Thu, Jul 11, 2019 at 1:17 PM Ken Pettit wrote:
>
> Yes, it is bit sampled. Also system time would run too fast and your
> modem would run at a higher baud rate.
I thought the UART chip handled the baud rate, not the CPU clocking things.
-Josh
much of this can be addressed with a rom patch ,I believe.
On Thu, Jul 11, 2019 at 1:30 PM John R. Hogerhuis wrote:
> Ah I missed the obvious things. I was thinking that the time and baud rate
> were based on hardware not software timing. But I guess they all would be
> changed by the higher
Ah I missed the obvious things. I was thinking that the time and baud rate
were based on hardware not software timing. But I guess they all would be
changed by the higher clock.
-- John.
Yes, it is bit sampled. Also system time would run too fast and your
modem would run at a higher baud rate.
Ken
On 7/11/19 10:12 AM, John R. Hogerhuis wrote:
Very cool Steve. I'm interested but I don't know if I can manage the
install.
I'd think the software timing things that will break
Very cool Steve. I'm interested but I don't know if I can manage the
install.
I'd think the software timing things that will break in the ROM would be
cassette I/O, key repeat, sound, I guess. Is the BCR bit sampled?
-- John.
Wow!
On Thu, Jul 11, 2019, 10:30 AM Stephen Adolph wrote:
> thanks Tom; I'd be happy to get you one of these + the REXCPM 4MB module
> that ties it all together for CP/M
>
> Did I mention REXCPM is now based on 4MB SRAM? that's a lot of disk
> space!!!
>
>
> On Thu, Jul 11, 2019 at 11:16 AM
On Thu, Jul 11, 2019 at 11:30 AM Stephen Adolph wrote:
>
> thanks Tom; I'd be happy to get you one of these + the REXCPM 4MB module that
> ties it all together for CP/M
>
> Did I mention REXCPM is now based on 4MB SRAM? that's a lot of disk space!!!
Wow!
thanks Tom; I'd be happy to get you one of these + the REXCPM 4MB module
that ties it all together for CP/M
Did I mention REXCPM is now based on 4MB SRAM? that's a lot of disk
space!!!
On Thu, Jul 11, 2019 at 11:16 AM Tom Dison wrote:
> I'm interested, especially as I have a M100 and several
Josh,
I'll know soon enough about height clearances. Will take lots of pictures.
I think there is room however in the M100. A socket on the M100 board is a
mandatory so you can revert to normal operation.
So, worst case is that the card itself has no sockets, but has the 2 CPUs
soldered in
I'm interested, especially as I have a M100 and several CP/M laptops.
On Thu, Jul 11, 2019, 10:14 AM Josh Malone wrote:
> On Thu, Jul 11, 2019 at 10:31 AM Stephen Adolph
> wrote:
>
> > Board is done and heading to the fab. VHDL is mostly done.
> >
> > I don't expect this board will be wildly
On Thu, Jul 11, 2019 at 10:31 AM Stephen Adolph wrote:
> Board is done and heading to the fab. VHDL is mostly done.
>
> I don't expect this board will be wildly popular but maybe it has some
> interest Double speed M100 seems interesting on it's own, let alone being
> able to support Z80
yah good point. not really sure about all the impacts of 5MHz. I'm
guessing it will need some patches in certain things. The capability is a
soft switch meaning you can just type a simple OUT command and switch on
the fly to fast mode.
So, perhaps that's the work around.
Might really mess up
Steve,
Not owning a 100 I can't dive into this but I am definitely watching to see
what you come up with. The 5mhz upgrade is really interesting. I do wonder what
that will do to all the apps that have specific timing (ie: TS-DOS delay). Will
the clock get messed up?
But if this leads to CP/M
Motivated by 2 things
1) discovery of the NSC800 Z80 processor that is 80C85 like
2) continuing to work in the direcition of CP/M
3) and recalling that there are 5MHz 80C85 parts out there..
I started to work on a dual CPU card for M100 that enables a couple of
things;
- standard 2.5MHz 80C85
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