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More window fixes

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This commit is contained in:
Lior Halphon 2020-12-24 20:50:47 +02:00
parent aa2bdf2a1c
commit 66f62d696c
1 changed files with 4 additions and 6 deletions
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10
Core/display.c
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@ -983,10 +983,9 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles)
gb->cycles_for_line += 2; gb->cycles_for_line += 2;
GB_SLEEP(gb, display, 32, 2); GB_SLEEP(gb, display, 32, 2);
mode_3_start: mode_3_start:
/* Todo: verify timings */ /* TODO: Timing seems incorrect, might need an access conflict handling. */
if ((gb->io_registers[GB_IO_LCDC] & 0x20) && if ((gb->io_registers[GB_IO_LCDC] & 0x20) &&
(gb->io_registers[GB_IO_WY] == 0) && gb->io_registers[GB_IO_WY] == gb->current_line) {
gb->current_line == 0) {
gb->wy_triggered = true; gb->wy_triggered = true;
} }
@ -1241,11 +1240,10 @@ abort_fetching_object:
GB_SLEEP(gb, display, 11, LINE_LENGTH - gb->cycles_for_line - 2); GB_SLEEP(gb, display, 11, LINE_LENGTH - gb->cycles_for_line - 2);
/* /*
TODO: Verify double speed timing TODO: Verify double speed timing
TODO: Line 0 behaves differently when enabling the window during the transition between mode 2 to 3 TODO: Timing differs on a DMG
*/ */
if ((gb->io_registers[GB_IO_LCDC] & 0x20) && if ((gb->io_registers[GB_IO_LCDC] & 0x20) &&
(gb->io_registers[GB_IO_WY] == gb->current_line || (gb->io_registers[GB_IO_WY] == gb->current_line)) {
gb->io_registers[GB_IO_WY] == gb->current_line + 1)) {
gb->wy_triggered = true; gb->wy_triggered = true;
} }
GB_SLEEP(gb, display, 31, 2); GB_SLEEP(gb, display, 31, 2);