On 04/26/2014 05:43 PM, Ruud@Baltissen.org wrote: > Hallo smf, > > >> Can you dump and upload the rom somewhere? > > I tried to read the EPROM but I think it is brooken. Every time > after a read my burner reported verify errors. And worse, the first > 30 bytes are zero. It has a Z80 on board so the certainly the first > few bytes must contain something. Not necessarily.. If I remember right, the Z80 just starts executing Code at $0000 after a Reset. And the Opcode for NOP is $00. So it would just start up, execute 30 NOPs and then do whatever the rest of the code demands. It wouldn't make much sense, but it could be possible. An EPROM that loses its contents due to age reverts back to $FF for that cell. Gerrit Message was sent through the cbm-hackers mailing listReceived on 2014-04-26 17:00:08
Archive generated by hypermail 2.2.0.