Good point about NMIs...I just spent an hour and spotted my deliberate mistake. I need the "auto" feature to enable the Hazel RAM if an instruction is running from an enabled ROM _or_ if an NMI routine is running and an enabled ROM is paged in....I wonder are there other situations I'd not thought of. I hadn't twigged from your post about NMIs but I should really have thought of that ![:oops:]( "Embarassed")
The symptoms were that floppy disc accesses in ADFS didn't work (bad directory) but HD was fine.
I've now added an extra bit of logic into the VHDL (checks for instruction fetch from 0Dxx) - this is a bit messy now. However, I'd like to keep it like this for maximum compatibility...
Anyway on the plus-side it forced me to pour over the code and find a few parts of the ADFS sources that had hard-coded accesses of low workspace.
D
The symptoms were that floppy disc accesses in ADFS didn't work (bad directory) but HD was fine.
I've now added an extra bit of logic into the VHDL (checks for instruction fetch from 0Dxx) - this is a bit messy now. However, I'd like to keep it like this for maximum compatibility...
Anyway on the plus-side it forced me to pour over the code and find a few parts of the ADFS sources that had hard-coded accesses of low workspace.
D
Statistics: Posted by dominicbeesley — Wed Mar 13, 2024 4:18 pm