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OS_Byte 19
Programmer's Reference Manuals
» Part 15 – SWI Calls
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» OS_Byte 19
OS_Byte 19
(SWI &06)
| Entry | |
|---|---|
| R0 | 19 (&13) |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | Corrupted |
| R2 | Corrupted |
Use
The purpose of this call is to wait for the vertical sync.
Notes
This call takes the control of the ARM until the electron beam of the monitor has reached its last position and jumps to the top left of the screen.