Showing changes from revision #2 to #3:
Added | Removed | Changed
Entry | |
---|---|
R0 | 160 (&A0) |
R1 | VDU variable |
Exit | |
---|---|
R0 | Preserved |
R1 | value of variable |
R2 | value of next variable (entry R1 + 1) |
The purpose of this call is to read the VDU variable value.
This call is provided for compatibility with the BBC/Master 128, and reads various VDU variables. Note that it does not use the same numbers for variables as OS_ReadVduVariables, and that that SWI can read many more variables.