Ah! You reminded me.
A professor of mine at University was an amazing junk collector. He was
able to get a number of companies to donate computer equipment to the
engineering department. All kinds of obsolete hardware strapped to wooden
pallets sat in the basement for years.
I first saw a
On 11/7/21 9:24 am, Peter Noeth wrote:
... repairing Data General mini computers,
Novas, or Eclipses? You said discrete ALU board, so I'm suspecting Nova, but
I've never seen the internals of an Eclipse.
Cheers,
--dt
I would wish something like the same Hardware, but on upgraded
Motherboard.
With new capcitors etc. I am NEC PC-8201 user, all this Thru-Hole chips
are still avaiable today, or maybe its possible to use less components.
I build a Minimax 8085
On Sunday, 11 July 2021, Keolai Rose wrote:
> I recently finished building the Harlequin 128k rev 2D, which is a modern
> clone of the ZX Spectrum 128k using parts that are available today. That
> made me wonder if anyone has attempted to clone the model 100, or at least
> try to emulate the
I recently finished building the Harlequin 128k rev 2D, which is a modern
clone of the ZX Spectrum 128k using parts that are available today. That
made me wonder if anyone has attempted to clone the model 100, or at least
try to emulate the hardware in something like an FPGA. I suppose that the
I have always used ML / BASIC programs I wrote to do troubleshooting /
burn-in testing, using loopback connectors to test external ports (on a par
with the original IBM XT Diagnostics diskette). The programs could be
simple or complex, depending on the situation. Sometimes I only burn-in
test the
REX is great for TMPC out of the box... since you can just devote a named
RAM area to it, and switch over to dedicated TMPC bank on demand. So it
solves the problem.
ROM-izing programs is just another way to go probably without REX.
I guess there are varying degrees of ease depending on what you
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
Thanks Jerry, reading the entire address range is a good idea so that the whole
address bus and all memory is exercised. I added in clearing TIME$ first, and
then printing it after the CLS. I also snuck in a BEEP before the GOTO per
Josh’s suggestion.
It takes 25:07 to walk the entire address
TEST. Is this on?
Hey, Jeff
Its nothing like a real exorciser but I've been running the following code
on BASIC language machines since I was a kid to see how the machine will
respond and how long it will run. It's more fun to watch than anything
else.
10 CLS
20 FOR N=0 TO 65535
30 X=PEEK(N)
40 IF X < 32 THEN 60
The beep is a great idea! I think this one was a simple, but it was
intermittent for the owner and just happened to quit completely on its way to
me. The memory protect switch was gummed up not making good contact. Luckily is
was completely open when it got to me so it was easy to track down.
Last time I had an unstable machine, I just used a quick basic program
with POWER CONT, a delay loop, a cycle counter, and BEEP (so I could
notice across the house when it had died). But, in my case, I knew
(or, STRONGLY suspected) that the fault was in the power supply and
that the rest of the
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
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 9:41 AM Chris Fezzler wrote:
>
> TEST. Is this on?
Ken,
I reinstalled version 1.6 on my Windows 10 machine and the performance is
better. It must be either something with my install of 1.7 or 1.6 just runs
better.
Bill
On Fri, Jul 9, 2021 at 5:47 PM Bill Miranda wrote:
> Ken,
> I am running version 1.7 on Windows 10. I just updated to 1.7
Unfortunately, LADDIEALPHA hangs on the same place while oploading the
same ROM.
So its not a DL+ Problem.
i attached another USB2SERIAL Adapter to the Notebook to be on
/dev/ttyUSB1.
Need to investigate, will try to upload it over Windows on a "REAL"
SERIAL Port.
Thanks for your hints and help
Thanks for the long explanation, Brian,
Seems i have exact the same problem, which you have since yesterday,
Hanging after entering a file.name in REX while ROM upload.
I use your actual git repo, so the version is always actual.
Lets hope this problem will be solved somehow.
Thanks again!
NEVERMIND
My mystery is solved.
As I was closing down my 47 windows across 3 monitors to reboot, I
discover I had left a minicom session running on ttyUSB0, left over from
earlier when I was working on LPT_Capture.
Closed minicom and gee what do you know? dlplus working again.
--
bkw
On 7/9/21 4:21 PM, Peter Vollan wrote:
You'll have to explain what that is past the printer and serial ports.
https://github.com/bkw777/MounT
https://github.com/bkw777/BCR_Breakout
https://github.com/bkw777/PDDuino
I didn't think anyone else was actually trying them out.
--
bkw
On Fri, 9
I just removed the file size check entirely, which got REXCPM bootstrap
working with those cpm ramdisk image files that are even larger than
64k, and didn't seem to hurt anything else. I can't say for sure but I'm
pretty sure I even generated a directory listing from the dir with those
big
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