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OS_Word 9
Programmer's Reference Manuals
» Part 15 – SWI Calls
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» OS_Word 9
OS_Word 9
(SWI &07)
| Entry | |
|---|---|
| R0 | 9 |
| R1 | Pointer to 5 byte block |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | Logical colour block |
Use
The purpose of this call is to return the logical colour at the specified pixel.
Notes
This SWI returns the logical colour at the specified pixel. &FF is returned if:
- Screen is in a 256-colour mode.
- Pixel is off screen
- Mode is non-graphical
This call is deprecated. Please use OS_ReadPoint instead.