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Memory Map
System variables
Display Format
Character Sets
Monitor Subroutines
Monitor Commands
| |
| 0000-003f |
System variables |
| 0040-00ff |
Unused (except by BASIC) |
| 0100-01ff |
Processor Stack |
| 0200-03ff |
Display |
| 0400-AFFF |
RAM |
| BC00-BC01 |
1st AY8912 sound chip |
| BC02-BC03 |
2nd AY8912 sound chip |
| BC04 |
Space Invasion sound |
| BFC0-BFCF |
1st 6522 VIA |
| BFD0-BFD3 |
Serial I/O (not implemented in emulator) |
| BFE0-BFEF |
2nd 6522 VIA |
| BFF0 |
Read: Chunky graphics on
Write: Reset keyboard interrupt flag |
| BFF1 |
Write: Start delayed NMI |
| BFF2 |
Write: Write hex. keypad column |
| BFF3 |
Read: Read ASCII keyboard last key/hex. keypad
row
Write: Chunky graphics off |
| C000-E7FF |
BASIC interpreter ROM |
| F000-F7FF |
XBUG ROM |
| F800-FFFF |
TANBUG ROM |
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