From a3658f7f015989bc9e2b81d7e8dbbe5a1afc1c20 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 12:47:23 +0100
Subject: [PATCH] feat: new jump instruction
---
src/inst.rs | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/src/inst.rs b/src/inst.rs
index 0dd5e6bb..8ff0b303 100644
--- a/src/inst.rs
+++ b/src/inst.rs
@@ -209,7 +209,7 @@ pub const INSTRUCTIONS: [(fn(&mut Cpu), u8, &'static str); 256] = [
(ret_nz, 8, "RET NZ"),
(pop_bc, 12, "POP BC"),
(noimpl, 4, "! UNIMP !"),
- (noimpl, 4, "! UNIMP !"),
+ (jp_u16, 16, "JP u16"),
(noimpl, 4, "! UNIMP !"),
(push_bc, 16, "PUSH BC"),
(noimpl, 4, "! UNIMP !"),
@@ -770,6 +770,11 @@ fn pop_bc(cpu: &mut Cpu) {
cpu.set_bc(word);
}
+fn jp_u16(cpu: &mut Cpu) {
+ let word = cpu.read_u16();
+ cpu.pc = word;
+}
+
fn push_bc(cpu: &mut Cpu) {
cpu.push_word(cpu.bc());
}
--
GitLab