Posted By
Csabo
on 2004-07-28
19:36:32
|  Re: writing software to eprom
The eprom should begin with this:
JMP $xxxx ; cold-start
JMP $xxxx ; warm-start
0
CBM
The reason why some eprom's don't autostart, is because at the end of the cold-start routine they jump back to basic. If you just write your program and not return: you have "autostart".
The 0 byte is an ID, the value could be anything. The CBM characters must be there so that the KERNAL recognizes the eprom.
TPSH knows a lot about this subject. He created several custom eproms for himself and other scene members. |
