Timex Sinclair Video Mode Control
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Revision as of 18:51, 15 August 2017 by wiki>Hyphz (Created page with "{{Port |Number=$xxFF |ShortDesc=Controls Timex Sinclair video modes and colours in hi-res mode. |Readable=No |Writable=Yes |Subsystem=Enhanced ULA }} {| ! Bit !! Function |-...")
| Number | $xxFF |
|---|---|
| Decimal | |
| Short desc. | Controls Timex Sinclair video modes and colours in hi-res mode. |
| Bit Mask | |
| Readable | No |
| Writable | Yes |
| Subsystem | Enhanced ULA |
| Bit | Function |
|---|---|
| 0-2 | 000=Screen 0. 001=Screen 1. 010=Hi-colour. 110=Hi-res. |
| 3-5 | Sets screen color combination for hi-res mode. |
| 6 | Disables interrupts. Does the same as DI, but cannot be turned on again with EI. Use with caution! |
| 7 | Used for memory paging on the Timex Sinclair, not relevant on the Next. |