Difference between revisions of "OSWORD &FC"
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==See also== | ==See also== | ||
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* [http://mdfs.net/Software/Tube/Utils/ OSWORD &FC source code] | * [http://mdfs.net/Software/Tube/Utils/ OSWORD &FC source code] | ||
* [http://mdfs.net/Docs/Comp/BBC/Oswords OSWORDs list at mdfs.net] | * [http://mdfs.net/Docs/Comp/BBC/Oswords OSWORDs list at mdfs.net] | ||
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[[User:Jgharston|Jgharston]] 14:28, 26 May 2009 (UTC) | [[User:Jgharston|Jgharston]] 14:28, 26 May 2009 (UTC) | ||
[[User:Jgharston|Jgharston]] ([[User talk:Jgharston|talk]]) 10:55, 17 December 2024 (CET) | [[User:Jgharston|Jgharston]] ([[User talk:Jgharston|talk]]) 10:55, 17 December 2024 (CET) | ||
Latest revision as of 11:45, 17 December 2024
OSWORD &FC (252) DOS CRTC Control
This OSWORD call is installed by the 80x86 DOS BIOS.
Commands are sent from the 80x86 via Tube Register 2 within the OSWORD protocol, so cannot be called through the normal OSWORD mechanism. The transaction must be done manually by the client by sending through Tube Register 2:
&08 : Start OSWORD transaction &FD : OSWORD call &FD &00 : TxLen=0 xxx : Send a series of commands &00 : RxLen=0, terminate the OSWORD call
Commands
- b7=0 : program CRTC, command specifies register, next byte sent is the CRTC data
- &FC : write to mouse port (unimplemented)
- &FD : initialise event handler
- &FE : initialise mouse driver
- &FF : finish. All other commands also finish the transaction.
See also
| Tube OSWORD calls | |
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Jgharston 14:28, 26 May 2009 (UTC) Jgharston (talk) 10:55, 17 December 2024 (CET)
