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It's more reasonable to do it this way

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This commit is contained in:
Lior Halphon 2020-03-06 18:56:51 +02:00
parent fe7667a00c
commit 34cf0f558d
2 changed files with 8 additions and 17 deletions
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8
Core/memory.c
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@ -741,6 +741,14 @@ static void write_high_memory(GB_gameboy_t *gb, uint16_t addr, uint8_t value)
GB_timing_sync(gb);
GB_lcd_off(gb);
}
/* Handle disabling objects while already fetching an object */
if ((gb->io_registers[GB_IO_LCDC] & 2) && !(value & 2)) {
if (gb->during_object_fetch) {
gb->cycles_for_line += gb->display_cycles;
gb->display_cycles = 0;
gb->object_fetch_aborted = true;
}
}
gb->io_registers[GB_IO_LCDC] = value;
if (!(value & 0x20)) {
gb->wx_triggered = false;

17
Core/sm83_cpu.c
View File

@ -208,29 +208,12 @@ static void cycle_write(GB_gameboy_t *gb, uint16_t addr, uint8_t value)
uint8_t old_value = GB_read_memory(gb, addr);
GB_advance_cycles(gb, gb->pending_cycles - 2);
/* Handle disabling objects while already fetching an object */
if ((old_value & 2) && !(value & 2)) {
if (gb->during_object_fetch) {
gb->cycles_for_line += gb->display_cycles;
gb->display_cycles = 0;
gb->object_fetch_aborted = true;
}
}
if (/* gb->model != GB_MODEL_MGB && */ gb->position_in_line == 0 && (old_value & 2) && !(value & 2)) {
old_value &= ~2;
}
GB_write_memory(gb, addr, old_value | (value & 1));
GB_advance_cycles(gb, 1);
/* Handle disabling objects while already fetching an object */
if ((old_value & 2) && !(value & 2)) {
if (gb->during_object_fetch) {
gb->cycles_for_line += gb->display_cycles;
gb->display_cycles = 0;
gb->object_fetch_aborted = true;
}
}
GB_write_memory(gb, addr, value);
gb->pending_cycles = 5;
return;