Refinements to DMG STAT write interrupt bug. Fixes stat_irq_blocking on DMG.
@@ -452,7 +452,8 @@ static void write_high_memory(GB_gameboy_t *gb, uint16_t addr, uint8_t value)
case GB_IO_STAT:
/* A DMG bug: http://www.devrs.com/gb/files/faqs.html#GBBugs */
- if (!gb->is_cgb && (gb->io_registers[GB_IO_STAT] & 0x3) < 2 && (gb->io_registers[GB_IO_LCDC] & 0x80)) {
+ if (!gb->is_cgb && !gb->stat_interrupt_line &&
+ (gb->io_registers[GB_IO_STAT] & 0x3) < 2 && (gb->io_registers[GB_IO_LCDC] & 0x80)) {
gb->io_registers[GB_IO_IF] |= 2;
}
/* Delete previous R/W bits */
