OS_Byte 128 Reason Codes
OS SWI Calls
» OS_Byte
» OS_Byte 128
» Reason Codes
Reason Codes
| Entry | |
|---|---|
| 0 | Return switch state and number of last ADC channel converted |
| 1 – 4 | ADC channel number for which to return value |
| 7 | Mouse x |
| 8 | Mouse y |
| 246 | Free bytes in mouse buffer |
| 252 | Free bytes in printer buffer |
| 253 | Free bytes in serial output buffer |
| 254 | Free bytes in serial input buffer |
| 255 | Free bytes in keyboard buffer |
Notes
Note that for reading free space, R1 = 255 – buffer number.
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