From 49e3f89c610620c0ef72d7a358c755ebad35a12e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Magalh=C3=A3es?= <joamag@gmail.com>
Date: Wed, 6 Jul 2022 13:09:15 +0100
Subject: [PATCH] feat: new instructions
---
src/inst.rs | 24 ++++++++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)
diff --git a/src/inst.rs b/src/inst.rs
index 98a88bbb..60b2d822 100644
--- a/src/inst.rs
+++ b/src/inst.rs
@@ -412,9 +412,9 @@ pub const EXTENDED: [(fn(&mut Cpu), u8, &'static str); 256] = [
(noimpl, 4, "! UNIMP !"),
(noimpl, 4, "! UNIMP !"),
(bit_7_h, 8, "BIT 7, H"),
+ (bit_7_l, 8, "BIT 7, L"),
(noimpl, 4, "! UNIMP !"),
- (noimpl, 4, "! UNIMP !"),
- (noimpl, 4, "! UNIMP !"),
+ (bit_7_a, 8, "BIT 7, A"),
// 0x8 opcodes
(noimpl, 4, "! UNIMP !"),
(noimpl, 4, "! UNIMP !"),
@@ -2234,6 +2234,14 @@ fn bit_7_h(cpu: &mut Cpu) {
bit_h(cpu, 7);
}
+fn bit_7_l(cpu: &mut Cpu) {
+ bit_l(cpu, 7);
+}
+
+fn bit_7_a(cpu: &mut Cpu) {
+ bit_a(cpu, 7);
+}
+
fn res_0_a(cpu: &mut Cpu) {
cpu.a = res(cpu.a, 0);
}
@@ -2342,6 +2350,18 @@ fn bit_h(cpu: &mut Cpu, bit: u8) {
cpu.set_half_carry(true);
}
+fn bit_l(cpu: &mut Cpu, bit: u8) {
+ cpu.set_sub(false);
+ cpu.set_zero(bit_zero(cpu.l, bit));
+ cpu.set_half_carry(true);
+}
+
+fn bit_a(cpu: &mut Cpu, bit: u8) {
+ cpu.set_sub(false);
+ cpu.set_zero(bit_zero(cpu.a, bit));
+ cpu.set_half_carry(true);
+}
+
fn add_set_flags(cpu: &mut Cpu, first: u8, second: u8) -> u8 {
let first = first as u32;
let second = second as u32;
--
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