Thanks a lot for all these valuable pieces of information !

Just another question about the RadioShack Portable 1750L (which I own)...
is it (more or less) identical to RadioShack Portable 1650L ?

Or a little bit stronger ?

Probably with a program written by Julio Kaplan and Craig Barnes ?

Regards
Hans-Jürgen

Hello Hans-Jürgen

Seems to be a clone of RS-1680L, but it has 64 levels with differents mode (fun, beginners, aggressive,pratical, fixed deep, brute force, passive and normal), and problem level (> 2 pawns).

See https://www.spacious-mind.com/html/portable_1750l.html
and https://www.manualslib.com/manual/13...ack-1750l.html

Cordially.

Neuer ROM dump von Berger: Fidelity CB16 module.

Only 1 byte different when compared to the other dump. I don't know if the other dump is a small bugfix, or that it was a bad dump (changed byte is 0x10 <-> 0x0f, I'm giving more chance to bugfix).

Vielen Dank - Update ist im Anhang (nur neue bzw. geänderte Dateien).

Grüße,
Franz

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CXG Enterprise S ist emuliert (ist auch Star Chess programm), danke an Sean fur ROM dump.
This is the same HD6301V1 chip that Mychess dumped, but since Sean already planned to do it, I decided to wait for him.

Das sind ja grossartige Neuigkeiten! Sean Riddle ist ein Held! Ich hoffte schon lange auf einen HD6301V1 dump. Mit dem ROM des Yeno 301 XL / Chess King Counter Gambit könnte ich evtl. meine These, dass Franz Morsch dahinter steckt, besser belegen.

https://www.schachcomputer.info/foru...ead.php?t=5539



Nochmals vielen Dank an alle, Sean Riddle, hap, Mychess, Franz!

PS der Yeno 301 XL verwendet den HD6301X0, mit 192 Bytes RAM, ebenso wie Kittingers Alto / Accord..

I have a Yeno 301 XL currently on my workbench. With Sean's help from the distance, I'll try to dump the rom... it's not easy work! And then hap with his magic will do the emulation on MAME.

Patience! Many interesting things are to come.

Best,
Gerardo

Hello,

As I have already written, I have dumped these chess computers :

Chess Companion II HD6301V.
Star Chess HD6301V.
Novag Super Vip HD6301Y.
Yeno 301XL HD6301X. (doesn't look like the mondial's code, sorry Bataais)

I'm working on emulating these chess computers.

Cordially.

Hi,

Yes, I know. I had already read you. But if we've asked you for the romdumps and you haven't wanted to share them... I will continue as always to reverse engineer and share everything with the MAME development team.

Best,
Gerardo

OMG, that almost sounds like a dangerous threat!

The problem with these 6301 devices is that I'm not able to implement all features in my old MAME version 0.220.
About 2 weeks ago 'hap' made extensive changes to the corresponding MAME drivers (m6800) regarding 'nvram',
and I just can't port them back to 0.220, because too many MAME system files are affected.
This means that these emulations play chess correctly, but do not have permanent memory (NVRAM).

Regards,
Franz

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