Difference between revisions of "OSBYTE &00"
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On exit, X=host/OS type: | 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 or UNIX-type system | |
| − | + | 28 Commodore 64/128 | |
| − | + | 29 Texas Instruments calculator | |
| − | + | 30 Amstrad CPC | |
| − | + | 31 Sinclair ZX Spectrum | |
| − | 32 IBM PC | + | >=32 IBM PC-type system (DOS, Windows, etc.) |
==Implementations== | ==Implementations== | ||
Revision as of 20:26, 20 April 2016
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 or UNIX-type system
28 Commodore 64/128
29 Texas Instruments calculator
30 Amstrad CPC
31 Sinclair ZX Spectrum
>=32 IBM PC-type system (DOS, Windows, etc.)
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)
