Difference between revisions of "OSBYTE &FF"
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b5=1 b4=1 24ms 20ms 64ms | b5=1 b4=1 24ms 20ms 64ms | ||
b6 =HADFS: 0=drive 1 external, 1=drive 1 internal, via OSWORD &7F | b6 =HADFS: 0=drive 1 external, 1=drive 1 internal, via OSWORD &7F | ||
| + | b6 =ENFS: 0=unPROTed on Break, 1=PROTed on Break | ||
b7 =DNFS: 0=NFS priority, 1=DFS priority | b7 =DNFS: 0=NFS priority, 1=DFS priority | ||
| − | b7 =ENFS: | + | b7 =ENFS: 0=use buffered I/O and raise PAGE by &100, 1=don't use buffered I/O |
b7 =Master: screen mode b7 | b7 =Master: screen mode b7 | ||
Latest revision as of 03:42, 15 March 2018
OSBYTE &FF (255) - Read/Write startup Options
This is a copy of the keyboard links taken at last hard reset
b0..2=screen mode
b3 =if clear then the action of SHIFT/BREAK is reversed
b4..5=disk drive speed step time settle time head load
b5=0 b4=0 4ms 16ms 0ms
b5=0 b4=1 6ms 16ms 0ms
b5=1 b4=0 6ms 50ms 32ms
b5=1 b4=1 24ms 20ms 64ms
b6 =HADFS: 0=drive 1 external, 1=drive 1 internal, via OSWORD &7F
b6 =ENFS: 0=unPROTed on Break, 1=PROTed on Break
b7 =DNFS: 0=NFS priority, 1=DFS priority
b7 =ENFS: 0=use buffered I/O and raise PAGE by &100, 1=don't use buffered I/O
b7 =Master: screen mode b7
