From 8b3846d69a1f384936830ef3ff967291af1e055a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Magalh=C3=A3es?= <joamag@gmail.com>
Date: Sat, 2 Jul 2022 15:39:23 +0100
Subject: [PATCH] feat: more instructions
---
src/inst.rs | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/src/inst.rs b/src/inst.rs
index d47b43b4..d7ea355a 100644
--- a/src/inst.rs
+++ b/src/inst.rs
@@ -77,7 +77,7 @@ pub const INSTRUCTIONS: [(fn(&mut Cpu), u8, &'static str); 256] = [
(ld_b_h, 4, "LD B, H"),
(noimpl, 4, "! UNIMP !"),
(noimpl, 4, "! UNIMP !"),
- (noimpl, 4, "! UNIMP !"),
+ (ld_b_a, 4, "LD B, A"),
(noimpl, 4, "! UNIMP !"),
(noimpl, 4, "! UNIMP !"),
(noimpl, 4, "! UNIMP !"),
@@ -189,7 +189,7 @@ pub const INSTRUCTIONS: [(fn(&mut Cpu), u8, &'static str); 256] = [
(noimpl, 4, "! UNIMP !"),
(xor_a_a, 4, "XOR A, A"),
// 0xb opcodes
- (noimpl, 4, "! UNIMP !"),
+ (or_a_b, 4, "OR A, B"),
(or_a_c, 4, "OR A, C"),
(noimpl, 4, "! UNIMP !"),
(noimpl, 4, "! UNIMP !"),
@@ -729,6 +729,10 @@ fn ld_b_h(cpu: &mut Cpu) {
cpu.b = cpu.h;
}
+fn ld_b_a(cpu: &mut Cpu) {
+ cpu.b = cpu.a;
+}
+
fn ld_c_a(cpu: &mut Cpu) {
cpu.c = cpu.a;
}
@@ -779,6 +783,15 @@ fn xor_a_a(cpu: &mut Cpu) {
cpu.set_carry(false);
}
+fn or_a_b(cpu: &mut Cpu) {
+ cpu.a |= cpu.b;
+
+ cpu.set_sub(false);
+ cpu.set_zero(cpu.a == 0);
+ cpu.set_half_carry(false);
+ cpu.set_carry(false);
+}
+
fn or_a_c(cpu: &mut Cpu) {
cpu.a |= cpu.c;
--
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