Implement decrementing DMA transfer direction

twvd · Nov 27, 2023 · 94be55a · 94be55a
1 parent de3464c
commit 94be55a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/snes/bus/mainbus.rs b/src/snes/bus/mainbus.rs
@@ -279,7 +279,7 @@ where
                 let a_addr = match self.dma[ch].step() {
                     DMAStep::Increment => self.dma[ch].a_addr() + i,
                     DMAStep::Fixed => self.dma[ch].a_addr(),
-                    _ => todo!(),
+                    DMAStep::Decrement => self.dma[ch].a_addr() - i,
                 };
 
                 self.dma_transfer_step(ch, a_addr, b_addr, i);