| Address | IC Enabled |
U201 Output Pin | Function |
| $0000 - IFFF | U203 | 12 | MEMORY |
| $2000 - 3FFF | U204 | 13 | MEMORY |
| $4000 - 5FFF | U205 | 17 | MEMORY |
| $6000 - 7FFF | U206 | 18 | ROM |
| $8000 - BFFF | U207 | 15 | MONITOR ROM |
| $D810 - D81F | U213 | 19 | REAL-TIME CLOCK |
| $D820 - D83F | U214 | 19 | I/O INTERFACE |
| $D840 - D85F | U215 | 19 | I/O INTERFACE |
| $D880 - DFFF | U216 | 19 | RS-232 IN7ERFACE |
| $C000 - D7FF | U208 | 16 | MONITOR ROM |
| $E000 - FFFF | U208 | 16 | MONITOR ROM |
|