Difference between revisions of "OSWORD &5F"

Revision as of 01:13, 8 March 2015

OSWORD &5F (95 ) - "Monitor reads across tube" BBC Soft

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 [[Category:OSWORD]]
-OSWORD &5F (95) - Read/write I/O memory across Tube (BBC Soft/ISMEC Monitor)
+OSWORD &5F (95 ) - "Monitor reads across tube"			BBC Soft
-    On entry:
-        XY?0  =command: 0=read, 1=write
-        XY!1  =I/O memory address, b16-b31 ignored
-        XY?5  =byte to write when writing
-        XY?6  =ROM number or 128 for shadow screen
-    On exit:
-        XY?5  =byte read when reading