Is Virtual T no longer being released by the original developers? (Ken
Petit? Stephen Hurd?)
I was thinking about reporting some bugs and want it to go to whatever is
the mainline these days. I've been noticing some strange artifacts in the
way that NEC PC8201a binary files are saved to disk and
This sounds important. So far as I know, mine's original equipment. Do I
need to be worried?
Will
On 3/16/24 8:21 PM, Doug Jackson wrote:
Every time I see one of those evil NiCad batteries, I replace it with
a 0.5F supercap.
I have never had an issue with my M100, or with the Olivetti
Is the same behavior with nimh as with NiCAD?
On Sat, Mar 16, 2024, 6:46 PM Brian K. White wrote:
> One problem with batteries for sure is you can't tell a junk future
> leaker by just looking at it. Even if the actual cells are stamped with
> a quality manufacturer name, they could be fake or
On Fri, Mar 1, 2024 at 6:45 PM Stephen Adolph wrote:
> I have so many Model T around here-- too many! One of the reasons is for
> testing, but another reason is because I have different computers for
> different use cases.
> For example, I have an M100 set up for CP/M using an NSC800 CPU using
One problem with batteries for sure is you can't tell a junk future
leaker by just looking at it. Even if the actual cells are stamped with
a quality manufacturer name, they could be fake or they could be real
but rejects, or they could be illegitimate extra production "after hours
runs" from
On 3/16/24 21:05, Kenneth Pettit wrote:
On 3/16/24 5:46 PM, Brian K. White wrote:
Thanks, and don't worry about it. It is simple enough for me to just
hook up a 100 and save a file, and then I'll know everything.
"Everything"! Wow, that's an impressive M100 you've got there! ;-)
It
Every time I see one of those evil NiCad batteries, I replace it with a
0.5F supercap.
I have never had an issue with my M100, or with the Olivetti equivalent
(number escapes me at the moment)
Having said that, the oldest would have been 8 years ago, so I don't have
the same 30years of
On 3/16/24 5:46 PM, Brian K. White wrote:
Thanks, and don't worry about it. It is simple enough for me to just
hook up a 100 and save a file, and then I'll know everything.
"Everything"! Wow, that's an impressive M100 you've got there! ;-)
On 3/16/24 20:37, Stephen Adolph wrote:
Not a rexcpm function. It is handled by import and export written by
Philip.
I can say that I believe import and export use tpdd routines that mirror
the rex routines and are based on Code built by Wilson van alst.
I'd have to do some work to
You can run plugged in to the wall for all normal random on/off
operating times without worrying about it too much, IE, all day long for
8 to 12 hours or whatever, and for multiple days in a row, if unplugged
when turned off.
And you can leave it plugged in turned on or off overnight for one
Not a rexcpm function. It is handled by import and export written by
Philip.
I can say that I believe import and export use tpdd routines that mirror
the rex routines and are based on Code built by Wilson van alst.
I'd have to do some work to understand how the name is structured. I think
it
On 3/16/24 13:48, Stephen Adolph wrote:
regarding file transfer, use
IMPORT
or
EXPORT
in CP/M. Included in package.
These programs access a "TPDD". Filenames are 8.3 format,
cheers
Steve
What is the ATTR byte? Presumably F ?
And is that fixed-length space-filled like what Floppy or WP-2 do
Before I joined the list, there was a discussion about using CP/M over
the serial line:
http://lists.bitchin100.com/htdig.cgi/m100-bitchin100.com/2021-November/086361.html
This definitely seems like something I want to do (log into the M100,
via minicom/screen). The thread is a bit involved
On 3/16/24 01:50, John R. Hogerhuis wrote:
Laddiealpha and DLplus do the same thing, they're just different
implementations of the server/disk side of the tpdd protocol. There are
some differences in how they map to/from 6.2 filenames and how they deal
with misnamed ASCII BASIC files. Probably
Wow, Brian! Super clear. Now, I want a REX# :).
When you say that leaving it plugged in will kill the battery, do you
mean that I should run it off AA batteries most of the time and not my
6v 200ma adapter? And the battery you're talking about killing is the
nicad on the board, right?
All,
Here's a mini-tutorial I just wrote (so I wouldn't forget) for doing
assembly on the M100, in CP/M 2.2. Corrections, suggestions welcome.
#
#** m100-assembly-on-cpm.txt
I summarize REX as: "An on-board software-controlled option rom library
and ram image library."
That's the shortest way I've found to say what it does, but that's not
the same as saying what it's good for or why you want one.
Because of the particular features and limitations of a M100,
Soo do I need/want a Z80? Is that a mod for the M100? I had a DEC
rainbow back in the day, that had an 8088/Z80 combo. It was nifty, but I
used DOS on it, the Z80 was apparently tasked with doing video stuff.
Will
On 3/16/24 3:06 PM, Brian Brindle wrote:
Quick correction, if you don't
Sweet! Thanks.
Will
On 3/16/24 3:03 PM, Brian Brindle wrote:
Simple DDT "HI" program - can be expanded to "hello world" if
ambitious enough.
Start DDT
A100 # Start assembly at location $100
mvi c,2 # Put 2 in the C-register for Console Out
mv e,48 # $48 is ASCII H
call 5 # entry
Quick correction, if you don't have a Z80 rst 7 is gonna end poorly - try
rst 6 instead.
Only see these things AFTER hitting send..
Start DDT
A100 # Start assembly at location $100
mvi c,2 # Put 2 in the C-register for Console Out
mv e,48 # $48 is ASCII H
call 5 # entry point for all
Simple DDT "HI" program - can be expanded to "hello world" if ambitious
enough.
Start DDT
A100 # Start assembly at location $100
mvi c,2 # Put 2 in the C-register for Console Out
mv e,48 # $48 is ASCII H
call 5 # entry point for all system calls (BDOS)
mvi c,2 # Put 2 in C-register
Brian,
Definitely. DDT is great. I'll be working through that next. I finally
got a program working and assembled - from the 2.2 manual - read chars
until *. Now, I just gotta get hello, world working I was sure, it
would work... oh, wait, when it says to CALL CPM, I bet it's not talking
Thanks, Steve! I didn't truly appreciate CP/M until I decided to start
mucking about in Assembler. I just got my first assembly program working
in CP/M, yay and it's easy enough to just do the editing on my PC using
sublime (after figuring out how to get 8 charater tabs and not spaces),
If you just want to play, don't discount ddt in CP/M. Cheap and dirty way
to play with everything.
On Sat, Mar 16, 2024, 1:48 PM Stephen Adolph wrote:
> regarding file transfer, use
> IMPORT
> or
> EXPORT
> in CP/M. Included in package.
> These programs access a "TPDD". Filenames are 8.3
regarding file transfer, use
IMPORT
or
EXPORT
in CP/M. Included in package.
These programs access a "TPDD". Filenames are 8.3 format,
cheers
Steve
On Sat, Mar 16, 2024 at 1:36 PM Will Senn wrote:
> I broke down and started reading the manuals (REXCPM, CP/M 2.2, etc). It's
> starting to come
More duh, export and import writes and reads from tpdd emulator!
Awesome.
On 3/16/24 12:34 PM, Will Senn wrote:
I broke down and started reading the manuals (REXCPM, CP/M 2.2, etc).
It's starting to come together (again?)... I've inlined the answers I
figured out for posterity or the next
I broke down and started reading the manuals (REXCPM, CP/M 2.2, etc).
It's starting to come together (again?)... I've inlined the answers I
figured out for posterity or the next clueless newb who comes along.
On 3/16/24 11:00 AM, Will Senn wrote:
2. CP/M works from RexCPM, which is great, cuz
Got it. I'll find a text on CP/M Assembly - dos calls or whatnot.
Will
On 3/16/24 11:41 AM, John R. Hogerhuis wrote:
You'd want to use CP/M for as much I/O as possible.
CP/m runs in all-RAM mode. So the main ROM isn't mapped in lower
address space.
Though I'm sure Steve or Phil could show
You'd want to use CP/M for as much I/O as possible.
CP/m runs in all-RAM mode. So the main ROM isn't mapped in lower address
space.
Though I'm sure Steve or Phil could show you how to do a far call to the
main ROM if you really need to. But you probably don't.
Of course you also can do direct
I figured out a bunch of stuff:
1. ZBG "works" and I was able to get the sample checkerboard app to run.
I ran into memory issues, though. For example, when I edited the source
and saved it out of TEXT. All was well with the world, but when I tried
'ASM SAMPLE.DO SAMPLE /WE' from within
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