Internal Port Decoding b24-31 Register
From SpecNext official Wiki
Number | $85 |
---|---|
Readable | Yes |
Writable | Yes |
Short Description | Enabling internal ports decoding |
Bit | Description |
---|---|
7-1 | (bit 31-25) Reserved, use 1 (? to be confirmed) |
0 | (bit 24) Enabling ($BF3B) and ($FF3B) (ULA+) |
All bits are set to 1 upon soft reset.
(note: Next registers with number higher than $7F are inaccessible from Copper code)