4 ms·
Neat, I counted 240 bytes on their zero page reserved for application state. They had 16 high speed bytes left for future expansion. https://github.com/Museum
by EdSharkey 10y ago
Neat, I counted 240 bytes on their zero page reserved for application state. They had 16 high speed bytes left for future expansion.
https://github.com/Museum-of-Art-and-Digital-Entertainment/habitat/blob/master/habitat/Beta/Beta1.0/Source/zpage.m https://github.com/Museum-of-Art-and-Digital-Entertainment/h...
- rzzzt 10y agoAddresses 0 and 1 are reserved for I/O on the 6510.
- EdSharkey 10y agoOh really? What kind of I/O? Something in my foggy memory said that first word there was used to control bank switching on the GeoRam memory expansion unit.
- rzzzt 10y ago6 I/O pins are exposed, the first three bits are used for bank switching, the second three are for datasette control. https://www.c64-wiki.com/index.php/Bank_Switching#Expansion_Port https://www.c64-wiki.com/index.php/Bank_Switching#Expansion_... https://www.c64-wiki.com/index.php/Cassette_Port https://www.c64-wiki.com/index.php/Cassette_Port