Looking for ROMS for a SYSCOM II

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Looking for ROMS for a SYSCOM II

Hi Guys i am looking for a copy of the roms for a SYSCOM II clone, if someone does have it i would really need a copy as i am stuck with my restoration project

Thanks Marco

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According this link, it seems

According this link, it seems to be that the Syscom II system used pirated Apple + ROMs, instead own developed ROMs.

 

https://www.applefritter.com/comment/5099#comment-5099

 

But I'm not sure about

 

Kind regards

Torsten (aka tokabln) - Berlin, Germany

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Hi

Hi Torsten,thanks for you insight, yes i am researching all topics regarding this clone but it seems that the original Apple II+ Roms do not work on it. I have merged D0+DF,E0+EF,F0+F8 into 3 eproms as the board has onle 3 EPROM spaces assuming they would work, but the copmputer is dead as if no ROMS were installed, seems on the orriginal board there was only the F0-F8 ROM, with that it does show some signs of life but i did read this EPROM but seems to be suffering from BITROT syndrome as i have also tried to disassemble the actual ROM and parts make are understandable and similar to the original Apple II+ but a lot of garbage in there.

There is so little information on the net regarding this clone, any information is helpful thanks

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You can try to readout an

You can try to readout an unstable eprom by reducing the supply voltage. If a bit is flipping to 0 (zero) then, this cell is marginal. With this information and different readouts (using different supply voltages) it's sometimes feasible to recreate the original content. But it isn't a 100% reliable methode.

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I believe Tom Owad may have

I believe Tom Owad may have one.

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Hi David, thanks for the

Hi David, thanks for the headsup  but he has not :(

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ROM read

Seems that this clone has only 3 eproms in it i assume they are devided into D0/d8 E0/E8 and F0/F8 i have managed to read the F0/F8 rom but it does not even look similar to the original F8 of the Apple II+ is there any expert that can help me out here.

I managed to get the logo to appear so the monitor rom is working, but i am not sure why

Anyone out there have a disassembler for 6502?

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Disassemblers for the world

Disassemblers for the world of the 6502s:

http://6502.org/tools/asm/

 

I've written my own as many people did. This one is similiar to the DASMx 1.40 (which I preferred) but it runs with OS-9/68k.

 

Regards

Ralf

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Thanks for the link Ralf

Thanks for the link Ralf

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