27 lines
783 B
Zig
27 lines
783 B
Zig
const std = @import("std");
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const Bus = @import("Bus.zig");
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const Scheduler = @import("scheduler.zig").Scheduler;
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const Arm7tdmi = @import("cpu.zig").Arm7tdmi;
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const Atomic = std.atomic.Atomic;
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const cycles_per_frame: u64 = 160 * (308 * 4);
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pub fn runFrame(sched: *Scheduler, cpu: *Arm7tdmi, bus: *Bus) void {
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var cycles: u64 = 0;
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while (cycles < cycles_per_frame) : (cycles += 1) {
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sched.tick += 1;
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_ = cpu.step();
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while (sched.tick >= sched.nextTimestamp()) {
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sched.handleEvent(cpu, bus);
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}
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}
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}
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pub fn runEmuThread(quit: *Atomic(bool), pause: *Atomic(bool), sched: *Scheduler, cpu: *Arm7tdmi, bus: *Bus) void {
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while (!quit.load(.Unordered)) {
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if (!pause.load(.Unordered)) runFrame(sched, cpu, bus);
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}
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}
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