From d5d813efd7305cbf53d6ab008eafcaf59e41ad79 Mon Sep 17 00:00:00 2001
From: LRFLEW <LRFLEW@aol.com>
Date: Sun, 23 Oct 2022 10:31:33 -0500
Subject: [PATCH] CPU: Clear waiting with disabled interrupt (#434)

---
 src/cpu/65c02.h    |  2 +-
 src/cpu/fake6502.c | 14 ++++++++------
 src/main.c         |  6 ++----
 3 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/src/cpu/65c02.h b/src/cpu/65c02.h
index 15e9d6f4..a636d77d 100644
--- a/src/cpu/65c02.h
+++ b/src/cpu/65c02.h
@@ -131,7 +131,7 @@ static void stp() {
 // *******************************************************************************************
 
 static void wai() {
-	if (~status & FLAG_INTERRUPT) waiting = 1;
+	waiting = 1;
 }
 
 // *******************************************************************************************
diff --git a/src/cpu/fake6502.c b/src/cpu/fake6502.c
index 794aa3bc..47a96748 100644
--- a/src/cpu/fake6502.c
+++ b/src/cpu/fake6502.c
@@ -174,15 +174,17 @@ void nmi6502() {
     push8(status);
     status |= FLAG_INTERRUPT;
     pc = (uint16_t)read6502(0xFFFA) | ((uint16_t)read6502(0xFFFB) << 8);
-	waiting = 0;
+    waiting = 0;
 }
 
 void irq6502() {
-    push16(pc);
-    push8(status & ~FLAG_BREAK);
-    status |= FLAG_INTERRUPT;
-    pc = (uint16_t)read6502(0xFFFE) | ((uint16_t)read6502(0xFFFF) << 8);
-	waiting = 0;
+    if (!(status & FLAG_INTERRUPT)) {
+        push16(pc);
+        push8(status & ~FLAG_BREAK);
+        status |= FLAG_INTERRUPT;
+        pc = (uint16_t)read6502(0xFFFE) | ((uint16_t)read6502(0xFFFF) << 8);
+    }
+    waiting = 0;
 }
 
 uint8_t callexternal = 0;
diff --git a/src/main.c b/src/main.c
index 3e2d1f9f..6b0fbb8f 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1295,10 +1295,8 @@ emulator_loop(void *param)
 		}
 
 		if (video_get_irq_out() || via2_irq()) {
-			if (!(status & 4)) {
-//				printf("IRQ!\n");
-				irq6502();
-			}
+//			printf("IRQ!\n");
+			irq6502();
 		}
 
 		if (pc == 0xffff) {