From 1336a3af34ee6694fcef0fa555783415d083f033 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Magalh=C3=A3es?= <joamag@gmail.com>
Date: Fri, 3 Mar 2023 12:11:55 +0000
Subject: [PATCH] feat: conditional enabling of components
This is specially useful for disabling APU if not used.
---
src/gb.rs | 22 ++++++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
diff --git a/src/gb.rs b/src/gb.rs
index 26103de9..ace18d14 100644
--- a/src/gb.rs
+++ b/src/gb.rs
@@ -34,6 +34,9 @@ use std::{
#[cfg_attr(feature = "wasm", wasm_bindgen)]
pub struct GameBoy {
cpu: Cpu,
+ ppu_enabled: bool,
+ apu_enabled: bool,
+ timer_enabled: bool,
}
#[cfg_attr(feature = "wasm", wasm_bindgen)]
@@ -71,7 +74,12 @@ impl GameBoy {
let timer = Timer::default();
let mmu = Mmu::new(ppu, apu, pad, timer);
let cpu = Cpu::new(mmu);
- Self { cpu }
+ Self {
+ cpu,
+ ppu_enabled: true,
+ apu_enabled: false,
+ timer_enabled: true,
+ }
}
pub fn reset(&mut self) {
@@ -82,9 +90,15 @@ impl GameBoy {
pub fn clock(&mut self) -> u8 {
let cycles = self.cpu_clock();
- self.ppu_clock(cycles);
- self.apu_clock(cycles);
- self.timer_clock(cycles);
+ if self.ppu_enabled {
+ self.ppu_clock(cycles);
+ }
+ if self.apu_enabled {
+ self.apu_clock(cycles);
+ }
+ if self.timer_enabled {
+ self.timer_clock(cycles);
+ }
cycles
}
--
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