Difference between revisions of "OSBYTE &CA"
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[[Category:OSBYTE]] | [[Category:OSBYTE]] | ||
| − | OSBYTE &CA (202) - Read/Write Keyboard Status | + | ===OSBYTE &CA (202) - Read/Write Keyboard Status=== |
| − | + | This byte determines the current state of the keyboard modifier keys | |
| − | b0=reserved | + | b0 = BBC/Electron: reserved RISC OS: Alt pressed |
| − | b1=reserved | + | b1 = BBC/Electron: reserved RISC OS: Scroll Lock set |
| − | b2=reserved | + | b2 = BBC/Electron: reserved RISC OS: Num Lock set |
| − | b3= | + | b3 = Shift pressed |
| − | b4= | + | b4 = Caps lock off |
| − | b5= | + | b5 = Shift lock off |
| − | b6= | + | (ie, b5-4=01: Shift Lock on, 10: Caps Lock on, 11: No lock) |
| − | b7= | + | b6 = Electron: FN pressed BBC/RISC OS: Control pressed |
| − | + | b7 = Shift enable (Shift Caps or Shift Inverse) | |
| − | + | ||
| − | + | With Caps Lock on and Shift Enable off, Shift has no effect on letter keys. | |
| − | + | ||
| − | + | ===Examples=== | |
| − | + | * *'''FX 202,16''' turns Shift Lock on | |
| − | + | * *'''FX 202,32''' turns Caps Lock on | |
| − | + | * *'''FX 202,48''' turns Caps Lock/Shift Lock off | |
| − | + | * *'''FX 202,160''' turns Shift Caps on | |
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[[User:Jgharston|Jgharston]] 22:48, 26 May 2009 (UTC) | [[User:Jgharston|Jgharston]] 22:48, 26 May 2009 (UTC) | ||
| + | [[User:Jgharston|Jgharston]] ([[User talk:Jgharston|talk]]) 20:18, 13 June 2016 (UTC) | ||
Revision as of 21:18, 13 June 2016
OSBYTE &CA (202) - Read/Write Keyboard Status
This byte determines the current state of the keyboard modifier keys
b0 = BBC/Electron: reserved RISC OS: Alt pressed
b1 = BBC/Electron: reserved RISC OS: Scroll Lock set
b2 = BBC/Electron: reserved RISC OS: Num Lock set
b3 = Shift pressed
b4 = Caps lock off
b5 = Shift lock off
(ie, b5-4=01: Shift Lock on, 10: Caps Lock on, 11: No lock)
b6 = Electron: FN pressed BBC/RISC OS: Control pressed
b7 = Shift enable (Shift Caps or Shift Inverse)
With Caps Lock on and Shift Enable off, Shift has no effect on letter keys.
Examples
- *FX 202,16 turns Shift Lock on
- *FX 202,32 turns Caps Lock on
- *FX 202,48 turns Caps Lock/Shift Lock off
- *FX 202,160 turns Shift Caps on
Jgharston 22:48, 26 May 2009 (UTC)
Jgharston (talk) 20:18, 13 June 2016 (UTC)
