Difference between revisions of "OSBYTE &AD"
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OSBYTE &AD (173) - Read address of keyboard table | OSBYTE &AD (173) - Read address of keyboard table | ||
| − | + | On exit X=the high byte of OSByte &AC | |
| + | |||
| + | With an International Keyboard Driver, if bit 7 is clear (implying a keyboard table | ||
| + | in low memory), the MOS keyboard handler issues Service Call &30 to translate | ||
| + | keypresses. With an International Keyboard Driver present, this location holds: | ||
| + | |||
| + | b7 = 0 to indicate international keyboard driver being used | ||
| + | b6 = a flag | ||
| + | b5-b0 = keyboard number | ||
==See Also== | ==See Also== | ||
Revision as of 14:41, 25 March 2018
OSBYTE &AD (173) - Read address of keyboard table
On exit X=the high byte of OSByte &AC
With an International Keyboard Driver, if bit 7 is clear (implying a keyboard table in low memory), the MOS keyboard handler issues Service Call &30 to translate keypresses. With an International Keyboard Driver present, this location holds:
b7 = 0 to indicate international keyboard driver being used b6 = a flag b5-b0 = keyboard number
See Also
Jgharston 22:24, 26 May 2009 (UTC)
