en transferring. For
> what its worth, the machine has been very stable with no issues using UR
> except when attempting to active View80.
>
> Any additional recommendations would be much appreciated.
>
> Thanks,
>
> Patrick
>
> On Nov 29, 2021, at 8:12 AM, Stephen Adol
I seem to recall fixing this. Can you confirm you are on release 2.1
firmware for REX#? it may well be a conflict. As Ben said using CNTL-X
before you start the ROM using Call 63012 (don't start the rom from REX
Manager) gives you a REX# free try.
On Mon, Nov 29, 2021 at 3:15 AM Ben Wiley
Jake,
REX2 is not supported at all anymore.
Really should just take it out and replace it!
And certainly the new firmware does not work on it.
To recover that I think you might need to completely reload everything.
Btw nice to hear from you again.
Steve
On Saturday, November 27, 2021, Jake
, but
it is functionally the same for this use.
cheers
Steve
On Thu, Nov 18, 2021 at 11:52 PM John R. Hogerhuis wrote:
> Pretty clear. I think I could even manage this.
>
> I think it would make a good Hackaday article.
>
> -- John.
>
> On Thu, Nov 18, 2021, 7:33 PM
Put together a PDF documenting how I did my upgrades to the T102.
I'd be interested in any comments. I really don't know if anyone would
embark on such a mod, but .. it is posted.
I'll make the clock divider PCB available. I also have to add part
numbers.. forgot to do that.
Jim, great to hear from you again!
Looking forward to working with you on the improved fonts for MVT100.
Your "beta" firmware is in use, yes. It was a fine improvement.
cheers
Steve
On Tue, Nov 16, 2021 at 2:31 PM Jim Anderson wrote:
> Sorry I vanished for most of this year - depression is
2x; very much noticeable. I'll have to do a video or something.
The screen io is 2x faster. It is fed through the PIO chip which is
running in step with the cpu.
In order to keep the serial port running at expected rates, the timer
portion of the PIO needs a 2.5 MHz clock though.
To keep
Quick update on this thread.
5MHz T102:
* working well
* stock CPU, stock main ROM, stock RAM. No change to the ICs
* changes are reduced to (1) change the oscillator (2) add a /2 clock
circuit (3) apply a modification to the RAM chip select circuit.
* serial port works as normal, printer port
rect though, so there
>> is no way to connect my backpack drive. Would the 'Cassette/BCR port'
>> potentially work for redirect purposes as well?
>>
>> Tom
>>
>>
>> On Wed, Nov 17, 2021 at 7:09 AM Stephen Adolph
>> wrote:
>>
>>> ah! I
e/BCR port'
> potentially work for redirect purposes as well?
>
> Tom
>
>
> On Wed, Nov 17, 2021 at 7:09 AM Stephen Adolph
> wrote:
>
>> ah! I understand now. that makes sense. if CP/M still thinks it needs
>> to throttle the screen then that stays in effe
>
>
> On Tue, Nov 16, 2021 at 2:55 PM Tom Hoppe wrote:
>
>> Correct, VT100 emulation.
>>
>> On Tue, Nov 16, 2021 at 2:15 PM Stephen Adolph
>> wrote:
>>
>>> there will be escape characters flowing over serial in this case, so you
>>> need to en
there will be escape characters flowing over serial in this case, so you
need to ensure that does not mess with things.
If I understand what is happening
M100 > PC (video terminal character flow)
M100 < PC (input keyboard strokes)
When you say the terminal works reliably using F3,
I think Philip Avery is probably best to comment on to what degree that is
supported.
It is a good question.
On Tue, Nov 16, 2021 at 2:21 PM Jim Anderson wrote:
> First thought that comes to mind: it may be stopping because of the
> feature which pauses the screen output after 8 lines of
>
> Thanks for the journal of this endeavor. I look forward to the next
> chapter.
>
> george g.
>
> > On 10Nov2021, at 4:26 AM, Stephen Adolph wrote:
> >
> > List has been a bit quiet lately, so I thought.. why not share something
> interesting that I just l
List has been a bit quiet lately, so I thought.. why not share something
interesting that I just learned?
I have been toying quite a bit with 5MHz operation in M100 mostly but also
in T102.
In M100, I have been using 5MHz upgrades of a few different types, but they
all involve replacing the SRAM
Or, I guess probably easier to is have 4 ROM versions,
> one for each table and the user would need to burn the correct one for
> their KB layout.
>
>
>
> Jeff
>
>
>
>
>
> *From:* M100 *On Behalf Of *Stephen
> Adolph
> *Sent:* Thursday, October 28, 2021 8:14
e no-modem specifics.
So, that's that.
one copper layout
2 schematics, with 4 hardware configs for each keyboard type
2 main roms, with the EU rom containing all the 4 keyboard mappings
On Mon, Oct 25, 2021 at 10:03 PM Stephen Adolph
wrote:
> 5. QZERTY ITALY
>
> On Mon, Oct 25, 2
Hey a quick question for the crowd.
I know that the M100 user manual has a line by line listing of which ASCII
codes align with the keyboard keys - including CODE, GRAPH, shifted
versions etc.
But, I have not seen a LAYOUT version of that information.
By comparison, the Olivetti M10 user manual
5. QZERTY ITALY
On Mon, Oct 25, 2021 at 9:26 PM Stephen Adolph wrote:
> Hello,
> I'm gathering main ROMs for M10.
> I think there are 5 different keyboards,
>
> 1. QWERTY USA (got that rom)
> 2. QWERTY UK (got that rom)
> 3. AZERTY FRANCE (I have a listing for that)
Hello,
I'm gathering main ROMs for M10.
I think there are 5 different keyboards,
1. QWERTY USA (got that rom)
2. QWERTY UK (got that rom)
3. AZERTY FRANCE (I have a listing for that)
need:
4. QWERTZ GERMANY
5. QWERTY ITALY
Could use these ROMs if anyone has them, thanks!
Steve
> Will try to replace the cap.
>
> Thanks
>
>
> On Fri, 2021-10-22 at 09:32 -0400, Stephen Adolph wrote:
> > can you just clip it out and carry on?
> >
> > On Fri, Oct 22, 2021 at 9:10 AM ExPLIT | Pawel Radomychelski
> > wrote:
> > > Hello collegues!
can you just clip it out and carry on?
On Fri, Oct 22, 2021 at 9:10 AM ExPLIT | Pawel Radomychelski <
exp...@mailbox.org> wrote:
> Hello collegues!
>
> I bought another "non-working" NEC PC-8201 (Japansese Model).
> Found out that one green capacitor 16X 104M is broken.
> Now i am looking for
just a quick note to say I updated the M10 rom to fix the bug with shift3
key.
Version 3 is at:
https://bitchin100.com/wiki/index.php?title=Olivetti_M10_ROM_patch
cheers Steve
On Sat, Dec 8, 2018 at 9:02 AM Stephen Adolph wrote:
> I found a small fix was needed. The boot up sequence lo
I still have the hard copy.
But yes I did get the soft copy.
not near it at the moment however.
Steve
On Mon, Aug 23, 2021 at 6:53 PM Brian K. White wrote:
> On Club100 There is a reference to a KC-85 service manual:
>
>
>
easy to
> conceptualize how they map to the binary data. It reduces the mysteries a
> lot while debugging.
>
> --
> bkw
>
> On Sat, Aug 21, 2021, 10:02 AM Stephen Adolph
> wrote:
>
>> So would this run on a raspberry pi? I would guess so?
>>
>>
&
So would this run on a raspberry pi? I would guess so?
On Friday, August 20, 2021, Brian K. White wrote:
>
> I've been working on this for a few weeks and I just hit the main
> milestone that not only all the normal file access functions work, but the
> FDC-mode functions work, including,
whoops one more thing I didn't make clear . This ROM was patched to match
the M10 QWERY keyboard, not any other layout.
On Mon, Jul 26, 2021 at 2:11 PM Jeffrey Birt wrote:
> That is even better! Thanks Steve.
>
>
>
> Jeff
>
>
>
> *From:* M100 *On Behalf Of *Stephe
?
cheers
Steve
On Mon, Jul 26, 2021 at 2:11 PM Jeffrey Birt wrote:
> That is even better! Thanks Steve.
>
>
>
> Jeff
>
>
>
> *From:* M100 *On Behalf Of *Stephen
> Adolph
> *Sent:* Monday, July 26, 2021 12:54 PM
> *To:* m...@bitchin100.com
> *Subject:* Re: [M100
%20M10%20Main%20ROM;
Steve
On Mon, Jul 26, 2021 at 1:50 PM Stephen Adolph wrote:
> Jeff,
> I cant help on an M10 tsdos, but are you aware that i patched an m100 main
> to to run in an m10?
> This gives you all the roms in an m10.
>
> Steve
>
> On Monday, July 26, 2021, Jeff
Jeff,
I cant help on an M10 tsdos, but are you aware that i patched an m100 main
to to run in an m10?
This gives you all the roms in an m10.
Steve
On Monday, July 26, 2021, Jeffrey Birt wrote:
> Hi all,
>
>
>
> I recently picked up an Olivetti M-10 which is just a bit different than
> the
apacitors?) within the input path as the analog signal gets turned into
> TTL.
> --
> *From:* M100 on behalf of Stephen
> Adolph
> *Sent:* Wednesday, July 21, 2021 12:19 AM
> *To:* m...@bitchin100.com
> *Subject:* Re: [M100] Cassette woes
>
" Yes "sound on" can rob some of the signal and/or make it less distinct,
so the computer has more trouble reading it. "
ah... I disagree. Sound "on" has no impact.
The SID input of the CPU is used solely to detect zero crossings, and that
info is used to toggle the PIO that drives the
Update for the list.
Making progress!
Using a combination of tools - python, DASMX140, and excel, I've been able
to get a pretty complete "structural disassembly" of the Super ROM.
>From here, it is apparent how the main ROM calls are used, and what
memory locations are used.
There are about 450
Interesting - the discussion is all about how to port it, but they don't
discuss the flaws!
On Fri, Jul 16, 2021 at 7:45 AM Stephen Adolph wrote:
> Thanks Brian. I'll take a look but when I was reminded that rom2 has this
> function and it seems to work flawlessly, it took the wind out
Thanks Brian. I'll take a look but when I was reminded that rom2 has this
function and it seems to work flawlessly, it took the wind out of my sails
a bit.
I also was looking at the Microsoft version of this command via the nec
rom.
..Steve
On Friday, July 16, 2021, Brian K. White wrote:
>
eem to be well documented.
>
> I'm with Brian on this -- if YOU think it can be done, then I think it can
> be done. Let me know if I can help in any way.
>
> Gary
>
>
> On Mon, Jul 12, 2021 at 5:30 AM Stephen Adolph
> wrote:
>
>> Noting that SuperROM has never bee
panese Model) and round memory pins...
>
>
> Thanks
>
> Pawel
>
>
> On Wednesday, 14 July 2021, Stephen Adolph wrote:
> > Regarding my new memory upgrade cards, information posted at the wiki-
> >
> > https://bitchin100.com/wiki/index.php?title=PC-820
Regarding my new memory upgrade cards, information posted at the wiki-
https://bitchin100.com/wiki/index.php?title=PC-8201_BANK2_32kB_SRAM_card
https://bitchin100.com/wiki/index.php?title=M100_26-3801_24kB_SRAM_card
Nothing too novel here, but I made it for my purposes and thought I would
share.
I've disassembled and taken a quick look. it is quite different than "MO"
would have done, but the trampoline is clear.
(using DASMX140, which seems to be a really good disassembler!)
On Mon, Jul 12, 2021 at 1:30 PM John R. Hogerhuis wrote:
> I think it very doable. It comes down to the
So this is an interesting activity.. to try and easily transform a ram
based ml program ( in this case TMPC) to an option rom.
I realized in the process of looking at TMPC, and how it uses RAM, that
there really can be 2 classes of option "roms".
First is conventional program code that is
Chris all your stuff always ends up in my spam folder for some reason. I
watch for them.
On Sat, Jul 10, 2021 at 10:13 AM Josh Malone wrote:
> Yes - although it only avoided my spam filters due to overrides I have
> in place. Yahoo vs. mailman vs. gmail == unhappy
>
> On Sat, Jul 10, 2021 at
what's plugged into your computer? I guess a USB connector for power? and
a backpack?
On Fri, Jul 9, 2021 at 4:25 PM Jerry Davis wrote:
> Well that looks like an awesome accessory. One of those, "Why didn't I
> think to look for one of those?", moments. I want to try one of those.
>
>
Justin,
On your T200 ram module, what kind of pin do you use?
I'm always on the hunt for low cost pins...
thx
Steve
On Fri, Jul 9, 2021 at 9:28 AM Justin Poirier wrote:
> Some quick snaps I loaded to my Google Drive for paroosal:
>
> The SOIC EEPROM adapter/programmer:
>
>
I'm finding that emails seem to be missing from threads, delivered out of
order etc.
just me?
John,
I wonder how hard it would be to move TMPC to a rom.
we know how to do the trampoline.
I guess if 320 bytes of altlcd is enough variable space for it, it might be
doable without a full disassembly.
..Steve
On Thu, Jul 8, 2021 at 2:14 PM John R. Hogerhuis wrote:
> SuperROM is the best ROM
Teeny?
On Thursday, July 8, 2021, Tom Wilson wrote:
> Right, you don’t need TS-DOS, but you need *something* with the ability
> to load files from a TPDD compatible device. If you have an actual TPDD,
> you can use the bootstrap function, otherwise you have to find a program
> that can be used
the flash as a read/write file storage media.
On Thu, Jul 8, 2021 at 6:28 PM wrote:
> Stephen what is the difference between the REX# and the REX I bought from
> you some years ago?
>
> James
>
>
> Sent from my iPad
>
> On 8 Jul 2021, at 3:48 pm, Stephen Adolph wrote:
Bill,
REX# and it's predecessor REX can be installed in either M100 or T102.
Meaning you buy an M100 version, you can use it in T102 also, and move it
between the 2 if you want.
I don't make REX anymore. I have switched to the new design REX#. If you
really want the old version others will make
Yes I am actively making REX# and REXCPM. I can't keep them in stock ;)
you can shift REX# between M100 and T102.
On Thu, Jul 8, 2021 at 10:44 AM wrote:
> Speaking of must-have ROMS, is Stephen still making REX#? Is the REX#
> interchangeable between M100 and M102 or are they different
Greg, what are you hoping to run on the converted thin clients?
On Thu, Jul 8, 2021 at 10:14 AM Greg Swallow wrote:
> All,
>
> Am looking to pickup some thin client systems and convert them to Retro PC
> an use with the M100. Too many tower systems taking up space. Just
> wondering if anyone
Greg, do you perhaps want some hardcopy documentation for Lucid SuperRom
etc?
On Thu, Jul 8, 2021 at 9:49 AM Greg Swallow wrote:
> Justin,
>
> Having just gotten a Portable Computer Support Group (PCSG) Rom Bank with
> Disk+ and adding SuperROM, I would be intersted in burning some ROMs. Would
you can count me in for some quantity. Are these strips usable for T102
and M100? Assume 8201, M10, 8300, KC85 also.
What about T200?
..steve
On Wed, Jul 7, 2021 at 5:48 PM Jamie Nichol wrote:
> Peter,
>
> Looks like a pair of new zebra strips will cost $6 with usps shipping to
> contiguous
https://www.vcfed.org/forum/forum/genres/cp-m-and-mp-m/77676-turbo-pascal-can-it-be-set-up-to-compile-into-8080/page8#post1215807
It may be possible soon to write an application for M100 CP/M in Turbo
Pascal, and compile it to run on 8085.
This is interesting because
1. while you will still
Jamie,
Are the zebra strips a problem? I guess you are saying that for at least
some LCDs with missing lines, a new zebra strip would help?
For me it has usually been a pcb problem.
Steve
On Tuesday, July 6, 2021, Jamie Nichol wrote:
> Hey All,
>
> I do consumer product R as my day job.
I suspect that you will need to follow the procedure to "deinstall" a ROM
before you follow the procedure to "install" a ROM.
I'd be interested to see what the documentation says.
On Wed, Jun 30, 2021 at 2:57 PM Greg Swallow wrote:
> Disk+ and ROM Bank have arrived!
>
> Floppy of Disk+ is the
Can you post a pic or 2?
On Saturday, June 26, 2021, Greg Swallow wrote:
> All:
>
> Just grabbed a PCSG ROM Module w/ Disk+ ROM from eBay. Docs & software for
> Disk+ included, but not for the ROM Module. Not that I can see. Checked
> Club100, Archive.org, & pdfdrive.com, but no luck finging
and of course I found an error with my code.
fixed
On Sat, Jun 26, 2021 at 12:29 PM Stephen Adolph
wrote:
> well aren't I a bit slow.
> I already ported MEMCHK by Paul Globman to NEC.
> attached.
> duh.
>
>
>
> On Sat, Jun 26, 2021 at 9:49 AM Stephen Adolph
> wro
well aren't I a bit slow.
I already ported MEMCHK by Paul Globman to NEC.
attached.
duh.
On Sat, Jun 26, 2021 at 9:49 AM Stephen Adolph wrote:
> hi,
> Anyone know of a ram memory tester for NEC?
> Quick look yeilded nada.
>
> thx
> Steve
>
memchk.do
Description: Binary data
t; Cheers,
> SB
>
> —
> Greetings from Steve Baker
> Gravity brings me down...
>
>
> On Jun 26, 2021, at 11:28 AM, Stephen Adolph wrote:
>
>
> ok, cool, there seems to be some interest.
> I really just wanted to stop searching for 8k ram modules. Plus, I wanted
>
6 AM Pawel Radomychelski | ExPLIT <
exp...@mailbox.org> wrote:
> Oh it looks very cool!
> I'm also very interested!
>
> Cheers
>
> Pawel
>
> On Saturday, 26 June 2021, Stephen Adolph wrote:
> > Thought I would share this. I made a mulit-purpose RAM card for M100 and
me.
>
>
>
> Is this something you are willing to sell and if so, how much?
>
>
>
> Lloyd
>
>
>
> *From:* M100 *On Behalf Of *Stephen
> Adolph
> *Sent:* Saturday, June 26, 2021 9:00 AM
> *To:* m...@bitchin100.com
> *Subject:* Re: [M100] mem tester for NEC?
>
>
>
&
is obviously the
NEC 8201 bank2 install.
[image: 20210626_095155-small.jpg]
Steve
On Sat, Jun 26, 2021 at 9:49 AM Stephen Adolph wrote:
> hi,
> Anyone know of a ram memory tester for NEC?
> Quick look yeilded nada.
>
> thx
> Steve
>
hi,
Anyone know of a ram memory tester for NEC?
Quick look yeilded nada.
thx
Steve
ot;throw
> ASCII at it" terminal, but it will be fun to explore the options I think.
>
> On Wed, Jun 23, 2021 at 7:24 AM Stephen Adolph
> wrote:
>
> http://palmorb.sourceforge.net/download.html
>
> stumbled across this interesting piece of Palm Pilot software it turns
> the PP into an RS232 driven LCD display. This seems like it could be quite
> useful for the M100 - debug interface, auxiliary input/output etc.
>
>
http://palmorb.sourceforge.net/download.html
stumbled across this interesting piece of Palm Pilot software it turns
the PP into an RS232 driven LCD display. This seems like it could be quite
useful for the M100 - debug interface, auxiliary input/output etc.
sorry meant to send that to myself.
for those who might be interested this is the RENUM routine from NEC.
On Mon, Jun 21, 2021 at 7:55 AM Stephen Adolph wrote:
>
>
; ==
; RENUM Statement
; ==
1617H (01H) LXI B,000AH
161AH (C5H) PUSH B
161BH (50H) MOV D,B
161CH (58H) MOV E,B
161DH (CAH) JZ 1649H
1620H (FEH) CPI 2CH
1622H (CAH) JZ 162FH
1625H (D5H)
next* year.
>
> --
> bkw
>
>
> On 6/17/21 11:43 AM, Tom Wilson wrote:
> > There is actually a renumber feature in one of the option ROMs. I want
> > to say it’s the Cleuseau ROM. You can renumber programs, as well as so
> > a few other useful things.
> >
&g
On 6/17/21 11:43 AM, Tom Wilson wrote:
>
>> There is actually a renumber feature in one of the option ROMs. I want to
>> say it’s the Cleuseau ROM. You can renumber programs, as well as so a few
>> other useful things.
>>
>> So there’s no need to add to REX. Just
u ROM. You can renumber programs, as well as so
> > a few other useful things.
> >
> > So there’s no need to add to REX. Just install that option ROM and use
> > it when writing BASIC programs.
> >
> > On Thu, Jun 17, 2021 at 7:46 AM Stephen Adolph > <mailto
er useful things.
>
> So there’s no need to add to REX. Just install that option ROM and use it
> when writing BASIC programs.
>
> On Thu, Jun 17, 2021 at 7:46 AM Stephen Adolph
> wrote:
>
>> Neither M100 nor T200 have a built in renumbering function for BASIC.
>> (
Neither M100 nor T200 have a built in renumbering function for BASIC.
(NEC does).
Seems to me that it would be a nice feature to add to REX#/REXCPM.
Here's what I am thinking
1) base the implementation from James Yi's RESEQ.100/.200
2) implementation would be from a CNTL-key sequence in the main
This was the 2nd product from Hugo. I've never used it. Text Power was
the first and pretty successful product by Hugo. Too bad he is not around
on the list to discuss these products with. I think I tried to track him
down years ago.
I have a disk with Disk POWER on it for NEC.
Interesting
day, May 21, 2021, Stephen Adolph wrote:
> I think I just made a testbed for that.
> Happy to set up and capture traces
>
> On Friday, May 21, 2021, Gary Weber wrote:
>
>> Yeah, that's interesting. Suppose we could "sniff" what TS-DOS is doing,
>> as this is
I think I just made a testbed for that.
Happy to set up and capture traces
On Friday, May 21, 2021, Gary Weber wrote:
> Yeah, that's interesting. Suppose we could "sniff" what TS-DOS is doing,
> as this is 100% repeatable. In my case, every test I've done results in
> the file handle not
Tandy did release software using the strange socket. Multi-solutions for
one, multiplan for another.The M100 main ROM also used the strange
pinout.
Didn't Microsoft supply the programmed M100 Main ROM PROMs to Tandy? I
think I read this somewhere, and in fact they released the PROMs with
ing very hot and "have burned" somehow.
>
> I took an old TI MAX232N and anything was fine.
>
> --
>
> Kind regards /
> Mit freundlichen Grüßen
>
> ExPLIT IT Solutions
> Pawel Radomychelski
>
>
>
> -Original Message-
> *From*: Stephen
As you know I tend to tinker with hardware a lot.
Well I certainly have been schooled on the downside of cheap ebay parts.
I'm working on a project to make Newdos (aka TS-DOS) more tolerant of
network latency. After all, we have good solutions now possible for direct
serial over wifi, so what we
what does it look like? is it a file?
On Fri, Nov 10, 2017 at 12:01 PM Kurt McCullum
wrote:
> All,
>
> John Hogerhuis found the Model 100 version of the Sardine program disk.
> This means that both the 200 and 100 RAM versions of Sardine have been
> found (We have the ROM versions). I’ll
here is teeny.BA in .DO (ascii) format for model 100/Tandy 102.
for completeness here they are for T200 and NEC as well.
transfer these via serial cable and run on the laptop. It will create
Teeny.CO.
On Tue, May 4, 2021 at 9:26 AM Stephen Adolph wrote:
> Jerry, why are you not us
Jerry, why are you not using LaddieAlpha? it is the most mature solution
in my opinion, and it runs native on Windows 10? I use it a lot.
I would separate the "bootstrap" from the "usage". Bootstrap is pretty
easy. I just transfer a text version of Teeny..BA. I don't bother with the
injection
Audacity is great, it *almost* works, but it has so many controls it makes
you think - wow there must be a way to make this work.
On Sun, May 2, 2021 at 9:49 AM Charles Hudson wrote:
> Thank you all for your suggestions:
>
> Douglas, thank you for pointing to the Club100 files; I copied them.
This would be possible but we'd need a few things
1) a function call that returned the "block number" for each of the 4 named
BP Sardine ROMs.
2) a uniform naming convention for REX# image names for each of these 4 roms
3) a function call that switched ROM images
4) modified BP roms to use these
what is HIMEM?
type
?HIMEM
On Thu, Apr 29, 2021 at 10:35 AM Charles Hudson wrote:
> As noted, got the Model 100 assembler / debugger recently. Installed on a
> Model 102 which has 32k and which, before installation, reported 28k free.
> Only 1 .BA program beside the standard applications.
>
Yes, I got a nice smile out of this. Thanks Ken!
On Thursday, April 22, 2021, Ken Pettit wrote:
> Happy Earth Day.
>
> An original work written on my Model 100 (running on rechargeable
> batteries of course):
>
>
>
>
> Ok, so I'm no poet! But there it is just the same. :)
>
> Ken
>
Yah the timer main role is keyboard service 250 time per sec.
Plus updating date and time
On Friday, April 23, 2021, Jeffrey Birt wrote:
> Does the RTC drive an interrupt to service the KB? Interesting I did not
> realize that.
>
>
>
> Jeff Birt
>
>
>
> *From:
I suspect that there is a problem with the internal real time clock.
I would check if there is a pulse on pin 10. Hard to verify that I will
admit.
Basically, pin 10 is the timer pulse on the RST7.5 input to the processor.
If you have a problem here your keyboard service routine will be "dead".
ah, I see. What I think is 2 commands is actually one command. that make
sense then.
On Mon, Apr 19, 2021 at 6:50 AM John R. Hogerhuis wrote:
>
>
> On Mon, Apr 19, 2021 at 3:42 AM Stephen Adolph
> wrote:
>
>> What I didn't show in the example is that the sending of th
used by client software to test if it is running in VT.
> 21H: Number of miliseconds remaining in the real-time timer. Stops when
> it reaches zero.
>
> Ken
>
> On 4/18/21 4:03 PM, Stephen Adolph wrote:
>
>> I've really been messing around trying to get Virtual
Ron, interesting device thanks.
Will take a closer look.
A key thing I need is a TTL version of the rs232 signals so my logic
analyzer can read the signals safely. 3.3 or 5V logic.
Cheers steve
On Sunday, April 18, 2021, Ron Pool wrote:
> There are budget breakout boxes for DE9 / DB9 that can
sed by client software to test if it is running in VT.
> 21H: Number of miliseconds remaining in the real-time timer. Stops when
> it reaches zero.
>
> Ken
>
> On 4/18/21 4:03 PM, Stephen Adolph wrote:
>
>> I've really been messing around trying to get VirtualT to work
I've really been messing around trying to get VirtualT to work with my real
TPDD.
so far, it has mostly been my lack of good cabling. Getting that sorted
out.
RS-232 can be confusing!sometimes RXD is out , sometimes in, etc. ;)
Anyhow, I've tried to make a good reliable serial port
I relooked at newdos. There are a number of things that are not getting
latency tolerance now. I think I will rewrite a section or two.
The last version I have is 5.05, so will patch that.
On Monday, April 5, 2021, John R. Hogerhuis wrote:
>
>
> On Mon, Apr 5, 2021 at 4:25 AM Steph
, that "listing" a document seems to
not tolerate delays.
Steve
On Sun, Apr 4, 2021 at 9:04 PM John R. Hogerhuis wrote:
>
>
> On Sun, Apr 4, 2021 at 5:19 PM Stephen Adolph
> wrote:
>
>> Is tsdos that difficult? Strict timing?
>>
>>
> Yeah the timeouts i
Is tsdos that difficult? Strict timing?
Yes I was using tsdos as well as my own code.
And for convenience i am using my windows 10 desktop. Haven't tried linux.
On Sunday, April 4, 2021, John R. Hogerhuis wrote:
>
>
> On Sun, Apr 4, 2021 at 3:35 PM Stephen Adolph
> wrote:
&g
this is a great video! thanks for sending it!
it would really really be great to find a tape with that MICTDC program..
On Sun, Apr 4, 2021 at 5:39 PM Peter Noeth wrote:
> Steve,
>
> This is the Radio Shack Diskette Drive Alignment video for their Service
> Center. It was uploaded by Peter
Hello all,
I'm doing some TPDD software work and, of course, I like to do that on
VirtualT.
However, getting VirtualT and real serial based TPDDs (like a real TPDD, or
LaddieAlpha running on PC, or otherwise) seems to be very unreliable.
It isn't clear to me that serial port settings alone can
thanks Peter, this is quite interesting. I appreciate your information
here.
it really seems like there is just one adjustment, and that is the physical
location of track zero. I think by making adjustments there, and by having
the track scroll out to track 20 to measure the cats eye, then you
:
> On 4/3/21 7:40 AM, Stephen Adolph wrote:
>
>> HI all,
>>
>> I've been toying with ways to read and write normal CP/M files to real
>> TPDD hardware. I'm happy to report that, as I thought, TPDDs don't care
>> about the format of the filename. So they will accept
Now that we have the official service manual for TPDD, I am wondering if
anyone knows something about the alignment disk.
It seems like the alignment disk is needed to adjust the track position.
Can we use a "stock disk" for this as well? Maybe the alignment disk is an
idealized signal with a
301 - 400 of 1444 matches
Mail list logo
