From 30eb5464455cc22cd504d83e50e833d4a7294e57 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Magalh=C3=A3es?= <joamag@gmail.com>
Date: Sun, 3 Jul 2022 01:31:05 +0100
Subject: [PATCH] feat: added ld_b_b
---
src/inst.rs | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/src/inst.rs b/src/inst.rs
index 752279d6..17e43c9b 100644
--- a/src/inst.rs
+++ b/src/inst.rs
@@ -70,7 +70,7 @@ pub const INSTRUCTIONS: [(fn(&mut Cpu), u8, &'static str); 256] = [
(ld_a_u8, 8, "LD A, u8"),
(noimpl, 4, "! UNIMP !"),
// 0x4 opcodes
- (noimpl, 4, "! UNIMP !"),
+ (ld_b_b, 4, "LD B, B"),
(noimpl, 4, "! UNIMP !"),
(noimpl, 4, "! UNIMP !"),
(noimpl, 4, "! UNIMP !"),
@@ -224,7 +224,7 @@ pub const INSTRUCTIONS: [(fn(&mut Cpu), u8, &'static str); 256] = [
(rst_08h, 16, "RST 08h"),
// 0xd opcodes
(noimpl, 4, "! UNIMP !"),
- (noimpl, 4, "! UNIMP !"),
+ (pop_de, 12, "POP DE"),
(noimpl, 4, "! UNIMP !"),
(noimpl, 4, "! UNIMP !"),
(noimpl, 4, "! UNIMP !"),
@@ -820,6 +820,10 @@ fn ld_a_u8(cpu: &mut Cpu) {
cpu.a = byte;
}
+fn ld_b_b(cpu: &mut Cpu) {
+ cpu.b = cpu.b;
+}
+
fn ld_b_h(cpu: &mut Cpu) {
cpu.b = cpu.h;
}
@@ -1031,6 +1035,11 @@ fn rst_08h(cpu: &mut Cpu) {
rst(cpu, 0x0008);
}
+fn pop_de(cpu: &mut Cpu) {
+ let word = cpu.pop_word();
+ cpu.set_de(word);
+}
+
fn push_de(cpu: &mut Cpu) {
cpu.push_word(cpu.de());
}
--
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