Difference between revisions of "OSBYTE &00"
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Revision as of 23:48, 8 March 2015
OSBYTE &00 (0) - Identify Host/Operating System
On entry, X=0 - Generate error giving host and OS type
X<>0 - Return host/OS in X
On exit, X=host/OS type:
0 Electron
1 BBC
2 BBC B+
3 Master 128
4 Master ET
5 Master Compact
6 Arthur or RISC OS
7 Springboard
8 UNIX
28 Commodore 64
29 Texas Instruments calculator
30 Amstrad CPC
31 Sinclair ZX Spectrum
32 IBM PC
Implementations
Early documentation refers to OSBYTE 0 as returning the OS version. As more systems were developed, it became more correct to refer to it returning a value indicating the host. For example, code running on a second processor will always be told what the I/O host is regardless of what the host is and what the second processor is.
See also
Jgharston 22:41, 6 September 2007 (BST)
