Desperado's latest activity

I replaced the ram sockets to be safe but it still gives the same problem...at every start, I have a different amount of ram on the...

there were a 4464-12 and a 41464-10...I replaced them with 41464-10

Must i check /CAS, /RAS and /WE signal for each dram?

Well, the 64GS was the best manual I could find containing 41464 DRAMs as an example of how they would probably be used for the 64G. It...

Dave the manual you attached is for the 64GS console...

I read that the 64G has the Super PLA that manages the RAM... is it possible that it got damaged?

Good morning everyone, I have a Commodore 64G that seems to have RAM issues. This board uses two 41464 RAM chips, and it often starts up...

Bo Zimmerman - zimmers.net... There is a subdirectory with the full (commented?) listing of BASIC 4. Dave

Don't forget there is the full disassembly of BASIC 4 (including the EDIT ROM) on Bo's site... Dave

I've now done quick initial disassemblies (thanks to Bruce Tomlin's disx!) of the edit-4-80-b-60hz.german.bin and Swiss Edit ROMs; the...

The edit ROM is also definitely different from any of the ones on Zimmers (unless you're an AI), but by doing a single-byte-per-line hex...

From a quick analysis of the character ROM, it looks as if you do indeed have a Swiss machine here, or at least some sort of alternative...

I compared @Desperado's ROMs against the zimmers ones (both for the EDIT and character generator ROMs) and no exact match. I suspect...

Solved! I changed also the Chars Rom and dow all is working ;) Thanks so much! Time to test the dual drive floppy now??

Update, now i removed all german labels from keys...i inserted the original basic 4 rom from zimmer and i moved some keys like business...