On 7/8/21 9:23 AM, Jeff Gonzales wrote:
What gear do you need to burn your own ROMs? I didn't even think the
chips would still be available in the 21st century.
Chips with the M100 pinout were never available. You always had to take
a standard chip and use some sort of pinout adapter between the chip and
the socket, except for multiplan and interactive solutions.
There were several different kinds of adapters people came up with.
I made this
http://tandy.wiki/Teeprom
The chip is normal, and the pcb provides the pinout adapter, and both
the pcb and the carrier provide the physical fit in the socket.
The necessary gear is all listed there.
It's easy to program and the parts and tools are all stuff you can buy
new today. But it's hard to justify bothering because for about the same
money you can get a REX# which is about 20x more useful.
But I just wanted to do it.
I started working on a version 2 that is more difficult to build because
it uses a TSOP part, but the trade-off is the chip is newer, more
available, only $1, and holds 4 or 8 roms instead of 1, and the
programming adapter is cheaper, quicker & easier to use than a test
clip. But the programming adapter doesn't quite work yet.
https://github.com/bkw777/Teeprom/blob/master/Teeprom2.md
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bkw
On Thu, Jul 8, 2021 at 9:14 AM Justin Poirier <[email protected]
<mailto:[email protected]>> wrote:
I’ve been using my M102 (and later as $$$ allowed, M200s) since the
early ‘90s, but have just gotten into burning my own ROMs for the
ROM slot, now that I’m in a position to fabricate the carrier
boards. I’ve found a half-dozen ROM images (separate images for both
the 100/102 and the 200), but no real descriptions of what I should
be looking into. TS-DOS is a must-have since I have a disk drive,
and that works great, but Sardine, Random, etc all look like they
need additional “support” ROMs, or extra hardware, or are
application-specific in a direction unknown to me. Are there other
ROM images that most people find useful, or are part of the
“must-have” collection? Where do I find them, if they exist?
I realize I’ve just asked a question like “what is the best brand of
motor oil” on a car-enthusiasts forum, but if anyone could throw me
a bone and get me pointed in a good direction, I’m pretty good at
finding the rest of the details myself.
Thanks a lot!
—Justin
--
bkw
