Interrupts
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Revision as of 18:30, 18 August 2017 by wiki>Hyphz (Created page with " = Default Interrupt Handler = The default interrupt handler is at address $0038 in ROM and is automatically called by the Z80 in Interrupt Mode 1. It: * updates the system...")
Default Interrupt Handler
The default interrupt handler is at address $0038 in ROM and is automatically called by the Z80 in Interrupt Mode 1.
It:
- updates the system variable frame counter;
- scans the keyboard and updates the keyboard state system variables.
The default interrupt handler preserves all registers and has no external requirements.