From ebdf50cdf3a357a0e37a5751fd9d78ae975979a0 Mon Sep 17 00:00:00 2001
From: vin <git@vineetk.net>
Date: Mon, 10 Jun 2024 12:55:40 +0530
Subject: [PATCH] implement tay, txa, tya

---
 cpu.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/cpu.c b/cpu.c
index acb4efb..d754c15 100644
--- a/cpu.c
+++ b/cpu.c
@@ -588,7 +588,10 @@ tax(void)
 static void
 tay(uint8_t arg)
 {
-/* TODO: complete this */
+	regs.y = regs.a;
+
+	STATUS_UPDATE_ZERO(regs.y);
+	STATUS_UPDATE_NEGATIVE(regs.y);
 }
 
 static void
@@ -600,7 +603,10 @@ tsx(uint8_t arg)
 static void
 txa(uint8_t arg)
 {
-/* TODO: complete this */
+	regs.a = regs.x;
+
+	STATUS_UPDATE_ZERO(regs.a);
+	STATUS_UPDATE_NEGATIVE(regs.a);
 }
 
 static void
@@ -612,7 +618,10 @@ txs(uint8_t arg)
 static void
 tya(uint8_t arg)
 {
-/* TODO: complete this */
+	regs.a = regs.y;
+
+	STATUS_UPDATE_ZERO(regs.a);
+	STATUS_UPDATE_NEGATIVE(regs.a);
 }
 
 static void