13. Memory Map
| ATOM mode |
Address |
BBC BASIC
mode |
| RAM |
0000 |
RAM (8K) |
| |
2000 |
RAM (8K OPTIONAL) |
| |
3C00 |
|
| |
4000 |
GRAPHICS RAM (6K) |
| |
5800 |
|
| |
6000 |
UTILITY ROM (4K) |
| |
7000 |
I/O |
| GRAPHICS RAM (6K) |
8000 |
BBC BASIC
(32K) |
| |
9800 |
| UTILITY ROM (4K) |
A000 |
| I/O |
B000 |
| ATOM ROM (4K) |
C000 |
MOS EXTENSION ROM
(4K) |
| EXTENSION ROM (4K) |
D000 |
EXTENSION ROM (4K) |
| OPTIONAL DOS (4K) |
E000 |
OPTIONAL DOS (4K) |
| ATOM ROM (4K) |
F000 |
MOS ROM (4K) |
|