feat: Initial Implementation of DMA Audio

2022-04-10 04:28:05 -03:00
parent c100d64fcb
commit 76b4d56ca6
9 changed files with 233 additions and 71 deletions
--- a/src/emu.zig
+++ b/src/emu.zig
@@ -46,7 +46,9 @@ pub fn runFrame(sched: *Scheduler, cpu: *Arm7tdmi, bus: *Bus) void {
    const frame_end = sched.tick + cycles_per_frame;

    while (sched.tick < frame_end) {
-        cpu.step();
+        if (bus.io.haltcnt == .Halt) sched.tick += 1;
+        if (bus.io.haltcnt == .Execute) cpu.step();
+        bus.handleDMATransfers();

        while (sched.tick >= sched.nextTimestamp()) {
            sched.handleEvent(cpu, bus);