Acorn Computers Limited PLUS 1, Руководство пользователя

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Appendix A
Summary of new and changed *FX commands and
OSBYTE calls
This Appendix provides a summary of the
*FX
commands available to users of the Electron
with an expansion unit fitted which either are not documented in the
Electron User Guide,
or
are documented incompletely. These commands may also be used in assembly language by a
call to OSBYTE; commands which can only be used from assembly language are summarised at
the end of this Appendix.
*FX3,X
Selects the device to which printed output is sent, as follows:
*FX3,0
- To screen and printer
*FX3,10
- To printer only
*FX3,4
- To screen only
*FX3,6
- To neither
4
device
*FX5,X
Selects the printer driver, as follows:
*FX5,0
- To 'printer dump'
*FX5,1
- To printer port
*FX6,X
Selects the 'printer ignore character', specified by the ASCII code X
*FX16,X
Selects the number of analogue to digital conversion channels, where X is a number in the
range 0 (no channels) to 4 (all four channels).
*FX17,X
Forces analogue to digital conversion to restart for channels X to 1.