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fixed namestable address

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kirjavascript 2021-05-24 09:12:21 +01:00
parent d4e56423ed
commit c0bbda1bcf
1 changed files with 5 additions and 2 deletions
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7
emu/src/gfx.rs
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@ -140,7 +140,7 @@ impl Gfx {
layer_priority: usize,
) {
// TODO: support non-320 size nametable
let nametable = (emu.core.mem.vdp.registers[3] as usize >> 1) * 0x400;
let nametable = (emu.core.mem.vdp.registers[3] as usize >> 1) * 0x800;
let window_x = emu.core.mem.vdp.registers[0x11];
let window_y = emu.core.mem.vdp.registers[0x12];
let window_left = window_x >> 7 == 0;
@ -162,8 +162,11 @@ impl Gfx {
if window_left && window_top && screen_y < window_y * 8 {
let row = screen_y >> 3;
for n in 0..cell_w - window_x {
let tile_slice = &vram[nametable + (n * 2)..]; // add Y
let tile_offset = (n + (row * cell_w)) * 2;
let tile_slice = &vram[nametable + tile_offset..]; // add Y
let word = (tile_slice[0] as usize) << 8 | tile_slice[1] as usize;
let byte = word >> 8;