&02 (2) select input stream

OSByte call Action Available on:
(dec) (hex) BBC Master Electron
2 02 Select input stream x x x

Entry parameters

X The input device

On exit:

A preserved
X Old value
C undefined


*FX 2,0 X=0 keyboard selected, RS423 disabled

*FX 2,1 X=1 RS423 selected & enabled

*FX 2,2 X=2 keyboard selected, RS423 enabled

Default: *FX2,0


Any call with X<>0 will result in an unknown OSBYTE service call being made to paged ROMs unless a previous call was recognised & changed the input source.