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Color Computer 2 Memory Map: Difference between revisions
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Revision as of 10:52, 3 May 2013
Overview
Start address | End address | Size (KB) | Contents | |
---|---|---|---|---|
0000 | 03FF | 1 | System Use | |
0400 | 05FF | 0,5 | Text screen memory | |
0600 | 7FFF | Free RAM (depending on use of graphics pages or DECB) | ||
0600 | 0BFF | 1,5 | Graphics page 1 | Pmode 3/4 page 1 |
0C00 | 11FF | 1,5 | Graphics page 2 | |
1200 | 17FF | 1,5 | Graphics page 3 | |
1800 | 1DFF | 1,5 | Graphics page 4 | |
0600 | 18CE | 4 | DECB Use (CONFLICT WITH GRAPHICS PAGES 1-4) | |
1E00 | 23FF | 1,5 | Graphics page 5 | Pmode 3/4 page 2 |
2400 | 29FF | 1,5 | Graphics page 6 | |
2A00 | 2FFF | 1,5 | Graphics page 7 | |
3000 | 35FF | 1,5 | Graphics page 8 | |
8000 | 9FFF | 8 | Extended BASIC ROM | |
A000 | BFFF | 8 | COLOR BASIC ROM | |
C000 | D800 | 6 | Disk BASIC ROM | |
C000 | FEEF | 16 | Cartridge ROM | |
FF00 | FFFF | 0,25 | Input/Output Area |
Input/Output Area
Start address | End address | Contents / Function |
---|---|---|
FF00 | FF1F | Peripheral Interface Adapter (PIA) 0 |
FF00 | PIA0 data port A: Keyboard rows & joystick button | |
FF01 | PIA0 control port A: Horizontal sync & interrupt control | |
FF02 | PIA0 data port B: Keyboard columns | |
FF03 | PIA0 control port B: Vertical sync control | |
FF04 | FF1F | PIA0 mirrors |
FF20 | FF3F | Peripheral Interface Adapter (PIA) 1 |
FF20 | PIA1 data port A: sound/cassette/RS-232 output/input | |
FF21 | PIA1 control port A: Cassette motor control | |
FF22 | PIA1 data port B: VDG control | |
FF23 | PIA1 control port B: FIRQ & sound control | |
FF24 | FF3F | PIA1 mirrors |
FF40 | FF5F | Diskette I/O usage |
FF60 | FF7F | Miscellaneous external hardware control |
FF80 | FFBF | Unused in CoCo 1 & 2 |
FFC0 | FFDF | SAM registers (screen mode & offset) |
FFE0 | FFF1 | Reserved |
FFF2 | FFFF | Interrupt vectors |