Internal Port Decoding b24-31 Register: Difference between revisions
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core 3.0 changes/refresh |
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Revision as of 09:05, 12 November 2019
| Number | TBRegisterNumber::$85 |
|---|---|
| Readable | TBRegisterReadable::Yes |
| Writable | TBRegisterWritable::Yes |
| Short Description | ShortDesc::Enabling internal ports decoding |
| Bit | Description |
|---|---|
| 7-1 | (bit 31-25) Reserved, use 1 (? to be confirmed) |
| 0 | (bit 24) Enabling {{#ask:
PortNumber::$BF3B }} ($BF3B{{#ask: PortNumber::$BF3B |mainlabel=- |headers=hide |intro= / |?NumberDec#- }}) and {{#ask: PortNumber::$FF3B }} ($FF3B{{#ask: PortNumber::$FF3B |mainlabel=- |headers=hide |intro= / |?NumberDec#- }}) (ULA+) |
All bits are set to 1 upon soft reset.
(note: Next registers with number higher than $7F are inaccessible from Copper code)