Timex Sinclair Video Mode Control: Difference between revisions
From SpecNext Wiki
Created page with "{{Port |Number=$xxFF |ShortDesc=Controls Timex Sinclair video modes and colours in hi-res mode. |Readable=No |Writable=Yes |Subsystem=Enhanced ULA }} {| ! Bit !! Function |-..." |
No edit summary |
||
| Line 6: | Line 6: | ||
|Subsystem=Enhanced ULA | |Subsystem=Enhanced ULA | ||
}} | }} | ||
{| | {| class="wikitable" | ||
! Bit !! Function | ! Bit !! Function | ||
|- | |- | ||
Revision as of 17:51, 15 August 2017
| Number | PortNumber::$xxFF |
|---|---|
| Decimal | NumberDec:: |
| Short desc. | ShortDesc::Controls Timex Sinclair video modes and colours in hi-res mode. |
| Bit Mask | PortMask:: |
| Readable | Readable::No |
| Writable | Writable::Yes |
| Subsystem | 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. |