=> R0 = 191 (&BF)
R1 = EOR value
R2 = AND value
<= R0 preserved
R1 = value before being overwritten
R2 = serial port state (see OS_Byte 192)
This call is obsolete - on the BBC/Master 128 the cassette interface and RS423 serial port shared hardware. It performs no useful function under RiscOS.
See PRM 2, page 451
[sh-index] Back to list of manuals
|
| |
