Posted By
Fuzzweed
on 2024-10-06
10:09:06
|  RAM banking and interrupts
As an alternative to banking RAM/ROM in and out, is there a list or critical ROM routines that can be copied to RAM that would leave interrupts working with RAM banked in permanently?
|
|
Posted By
Fuzzweed
on 2024-10-06
11:51:20
| Re: RAM banking and interrupts
Just following through the memory....
Looks like service vector FFFE
Banking routine FCB3-FCBD
ROM CE00-CE0B
Lmk if this seems correct or anything else I need to consider
|
|
Posted By
Fuzzweed
on 2024-10-06
14:56:43
| Re: RAM banking and interrupts
Sorry, not sure if it's helpful replying to myself as I go along...
My interrupt routine is pointed to from 0314, I think I git this from the programmers guide, is it possible to point to it from FFFE and miss out the rom routines completely?
|
|
Posted By
BSZ
on 2024-10-06
15:14:10
| Re: RAM banking and interrupts
Perhaps we do not understand the question: if you turn off ROM, you probably don't need it.  So what is the point of copying anything from ROM? Feel free to handle the full interrupt, use the $FFFE/$FFFF vector directly. I think.
|
|
Posted By
Fuzzweed
on 2024-10-06
15:36:38
| Re: RAM banking and interrupts
Yes thankyou I just found the same answer. Use fffe.
I'm learning from the programmers guide and it uses 0314. I followed the ROM disassembly and it looked like I could use fffe but I have no experience with this machine so I wasn't sure...... thankyou again for confirming.
|
|
