Difference between revisions of "OSBYTE &6F"
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Revision as of 02:13, 8 March 2015
OSBYTE &6F (111) - Read/Write Shadow RAM Switch
X b7=0 no stack operation b7=1 pop state from stack (reading), push state on stack (writing) b6=0 write switch state b6=1 read switch state b0=0 select video RAM b0=1 select shadow RAM On exit, X contains the previous switch state: b0=0 video RAM b0=1 shadow RAM
Jgharston 21:17, 26 May 2009 (UTC)