MEGA65 / mega65-core

MEGA65 FPGA core
Other
240 stars 85 forks source link

fix: vic-iv raster irq incorrectly triggered twice #604 #608

Closed ki-bo closed 2 years ago

ki-bo commented 2 years ago

VIC-IV physical raster interrupts were not edge triggered on ycounter. They already triggered before ycounter is incremented, leading to raster interrupts being triggered twice: at the beginning of a raster line and at its end.