Difference between revisions of "83:ROMCalls:4014"

Revision as of 13:50, 13 April 2005

Synopsis

Official Name: GetCSC

BCALL Address: 4014

This routine returns the Current Scan Code into register A.

Inputs

• none

Outputs

• a = (kbdScanCode)
• (kbdScanCode) = 0
• kbdSCR,(iy+kbdFlags) reset
• hl = kbdScanCode
• bc,de,f preserved

Comments

This routine expects that either interrupts are enabled or KbdScan was called manually. Either of these routines will check the keyboard and load the appropriate scan code into the memory location kbdScanCode and set the flag kbdSCR,(iy+kbdFlags).