If you have an IBM PS/2 model 35SX or model 40SX, I encourage you to PLEASE CHECK YOUR BIOS ROMs! I am looking for 10G4128/10G4127 from 1992 which have currently been spotted in the wild who-knows-how-long-ago but are not yet dumped.
These are rather rare ISA machines when they do show up and having this final ROM set will make life easier for anyone that has one of these two machines.
@Sun_Ultra10 But why set aside the financial incentives?
More importantly, why set aside the financial punishment that the current version of capitalism dumps upon every inventor who should admit, however defensibly, that their invention turned out to be too dangerous to use?
@Sun_Ultra10 I believe I have a 35SX, but it's not set up at all right now.
It won't boot if the CMOS battery is dead/nonexistent, so I'd have to get a Dallas Clock replacement or dremel into a dead one.
I also don't remember where my config floppy is offhand :(.
The FRU part numbers have long since worn off the EPROMs (uhhh, yea, what the hell, why aren't they ROMs?!).
Can you give me a sha256 of your existing BIOS copies?
I'll dump them within the hour (I have an EPROM reader). Any way to tell from the dump whether it's the revision you're looking for? Maybe BIOS Date Code at ffff:0006?
@Sun_Ultra10 Well, it wasn't for naught... I needed to test PC AT anyway (EPROM programmer/dumper is attached to it).
So I was able to ensure that everything is working correctly, and even made a repair I've been putting off :D.
I got the 35SX in early 2011, and have not used it much. The same ppl who sold me it also offered me a VAX, but I was a dumbass and didn't take it.
Lemme guess: The fact that the BIOS is EPROMs in my machine implies that it was field-upgraded, and IBM released multiple field upgrades. And you're looking for the last one?
@Sun_Ultra10 Just to confirm your copy is identical/good, please confirm the following SHA256s for me:
aa5d6d73d4f9eec2635f43124790067232b0fc37b6286b5ff708687b8b6c1ac8 PS235SX.BIN
81a294b3a2b1a4f1cc66b0432a5ea3988503a80c04917a6bba8ece57478ea924 PS235SX.EVN
264055f27ecc656b3881ae001cf5dbbf014a68dfca884a069fcc8d83c66da442 PS235SX.ODD
I uploaded the bins to my website: http://gopher.wdj-consulting.com:70/store
@Sun_Ultra10 Sorry that I couldn't help with the BIOS/advance the state-of-PS/2 preservation.
While I have my system open is there anything else you'd be interested in?
Btw, what hardware fills the ISA slots in your 35SX/40SX system?
❖ Ultra10
Riley S. Faelan
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William D. Jones