From fe7ae6e696811a39828dd9727295aa73ae4e5873 Mon Sep 17 00:00:00 2001 From: crecher Date: Mon, 12 Oct 2026 04:27:53 +0200 Subject: nes: add console with cpu bus and step loop tests: run nestest through nes console --- nes/nes.go | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 nes/nes.go (limited to 'nes/nes.go') diff --git a/nes/nes.go b/nes/nes.go new file mode 100644 index 0000000..c4d09a0 --- /dev/null +++ b/nes/nes.go @@ -0,0 +1,34 @@ +package nes + +import ( + "crecher.net/gones/v2/cart" + "crecher.net/gones/v2/cpu" +) + +type Console struct { + CPU *cpu.CPU + Cart *cart.Cartridge + RAM [0x800]uint8 + // PPU, APU, controllers once they exist + cycles uint64 +} + +func New(c *cart.Cartridge) *Console { + n := &Console{Cart: c} + n.CPU = cpu.NewCPU(n) + n.CPU.Reset() + return n +} + +func (n *Console) Step() int { + cycles := n.CPU.Step() + n.cycles += uint64(cycles) + return cycles +} + +func (n *Console) StepFrame() { + const cyclesPerFrame = 29780 // 29780 ~ 1789773 / 60.1 + for done := 0; done < cyclesPerFrame; { + done += n.Step() + } +} \ No newline at end of file -- cgit v1.2.3