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Fixed bug in ym7101 DMA

This commit is contained in:
transistor 2021-12-04 13:58:50 -08:00
parent 1518ffbc60
commit 8ced62cca0
1 changed files with 10 additions and 5 deletions
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15
src/peripherals/genesis/ym7101.rs
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@ -16,15 +16,15 @@ const REG_SCROLL_A_ADDR: usize = 0x02;
const REG_WINDOW_ADDR: usize = 0x03;
const REG_SCROLL_B_ADDR: usize = 0x04;
const REG_SPRITES_ADDR: usize = 0x05;
// Register 0x06 Unused
// Register 0x06 Unused
const REG_BACKGROUND: usize = 0x07;
// Register 0x08 Unused
// Register 0x09 Unused
// Register 0x08 Unused
// Register 0x09 Unused
const REG_H_INTERRUPT: usize = 0x0A;
const REG_MODE_SET_3: usize = 0x0B;
const REG_MODE_SET_4: usize = 0x0C;
const REG_HSCROLL_ADDR: usize = 0x0D;
// Register 0x0E Unused
// Register 0x0E Unused
const REG_AUTO_INCREMENT: usize = 0x0F;
const REG_SCROLL_SIZE: usize = 0x10;
const REG_WINDOW_H_POS: usize = 0x11;
@ -617,7 +617,7 @@ impl Steppable for Ym7101 {
self.state.transfer_dest_addr += self.state.transfer_auto_inc;
src_addr += 2;
count -= 2;
count -= 1;
}
},
DmaType::Copy => {
@ -769,6 +769,11 @@ impl Ym7101State {
println!("Scroll B : {:#06x}", self.scroll_b_addr);
println!("HScroll : {:#06x}", self.hscroll_addr);
println!("Sprites : {:#06x}", self.sprites_addr);
println!("");
println!("DMA type : {:?}", self.transfer_type);
println!("DMA Source: {:#06x}", self.transfer_src_addr);
println!("DMA Dest : {:#06x}", self.transfer_dest_addr);
println!("DMA Count : {:#06x}", self.transfer_count);
}
pub fn dump_vram(&self) {