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OS_ScreenMode
Programmer's Reference Manuals
» Part 15 – SWI Calls
» OS
» OS_ScreenMode
OS_ScreenMode
(SWI &65)
| Entry | |
|---|---|
| R0 | Reason code |
| All other registers dependent on reason code | |
| Exit | |
|---|---|
| R0 | Preserved |
| All other registers dependent on reason code | |
Use
The purpose of this call is to perform miscellaneous operations for screen mode handling.
Notes
The action performed depends on the reason code value in R0.
Reason Codes
| # | Hex # | Action |
|---|---|---|
| 0 | &00 | Select screen mode |
| 1 | &01 | Return current screen mode |
| 2 | &02 | Enumerate screen modes |
| 3 | &03 | Internal use only |