Difference between revisions of "OSBYTE &70"
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OSBYTE &70 (112) - Select Main/Shadow for VDU access | OSBYTE &70 (112) - Select Main/Shadow for VDU access | ||
| − | + | Y=0 X=0 Use whatever the default for the current mode is | |
X=1 Use main memory | X=1 Use main memory | ||
X=2 Use shadow memory | X=2 Use shadow memory | ||
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The value of X can be greater than 2 as well, and instructs the VDU | The value of X can be greater than 2 as well, and instructs the VDU | ||
drivers to use the bank at screenbase+(X*modesize) | drivers to use the bank at screenbase+(X*modesize) | ||
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==See Also== | ==See Also== | ||
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* http://mdfs.net/Docs/Comp/BBC/Osbyte00 | * http://mdfs.net/Docs/Comp/BBC/Osbyte00 | ||
| − | [[User: | + | [[User:Jgharston|Jgharston]] 21:45, 26 May 2009 (UTC) |
Revision as of 01:13, 8 March 2015
OSBYTE &70 (112) - Select Main/Shadow for VDU access
Y=0 X=0 Use whatever the default for the current mode is
X=1 Use main memory
X=2 Use shadow memory
(Risc OS 1.00)
The value of X can be greater than 2 as well, and instructs the VDU
drivers to use the bank at screenbase+(X*modesize)
See Also
Jgharston 21:45, 26 May 2009 (UTC)
