OS_Byte 112
OS SWI Calls
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» OS_Byte 112
OS_Byte 112
(SWI &06)
| Entry | |
|---|---|
| R0 | 112 (&70) |
| R1 | Bank number |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | Previous bank number |
| R2 | Corrupted |
Use
The purpose of this call is to select the bank of screen memory which is to be used by the VDU drivers.
Notes
If R1 equals 0, then the default bank for the current mode (1 or 2) will be used. Any other value means to set the screenbank which starts at Screenstart+(R1*ModeSize). The maximum bank number is TotalScreensize/ModeSize. The default bank is for a non-shadow mode 1, for a shadow mode 2.
See also
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