Difference between revisions of "83:ROMCalls:4010"
From WikiTI
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'''Call Address:''' 4010 | '''Call Address:''' 4010 | ||
| − | This routine scans the keyboard for any key presses and updates the memory location [[ | + | This routine scans the keyboard for any key presses and updates the memory location [[83:RAM:0000|kbdScanCode]]. |
=== Inputs === | === Inputs === | ||
| Line 12: | Line 12: | ||
=== Outputs === | === Outputs === | ||
| − | * ([[83:RAM: | + | * ([[83:RAM:0000|kbdScanCode]]) = scan code of key press |
=== Registers Destroyed === | === Registers Destroyed === | ||
Revision as of 12:17, 17 April 2008
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Synopsis
Official Name: KbdScan
Call Address: 4010
This routine scans the keyboard for any key presses and updates the memory location kbdScanCode.
Inputs
- none
Outputs
- (kbdScanCode) = scan code of key press
Registers Destroyed
- ??
Comments
Normally this routine is called by the interrupt handler. If interrupts are not enabled, this can be used prior to the Getcsc romcall to achieve the same results.
