From 774a2fa951c8dd80293c178a1fd7f0bc95f51c9f Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Sat, 9 Aug 2025 14:40:27 +0200
Subject: [PATCH] FDC: Do not attempt to raise the IRQ if it is disabled.

---
 src/floppy/fdc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/floppy/fdc.c b/src/floppy/fdc.c
index 28e3b150f..9d68365d2 100644
--- a/src/floppy/fdc.c
+++ b/src/floppy/fdc.c
@@ -341,7 +341,8 @@ fdc_int(fdc_t *fdc, int set_fintr)
         ienable = !!(fdc->dor & 8);
 
     if (ienable) {
-        picint(1 << fdc->irq);
+        if (fdc->irq != 0xff)
+            picint(1 << fdc->irq);
 
         if (set_fintr)
             fdc->fintr = 1;
@@ -358,7 +359,7 @@ fdc_watchdog_poll(void *priv)
     if (fdc->watchdog_count)
         timer_advance_u64(&fdc->watchdog_timer, 1000 * TIMER_USEC);
     else {
-        if (fdc->dor & 0x20)
+        if ((fdc->dor & 0x20) && (fdc->irq != 0xff))
             picint(1 << fdc->irq);
     }
 }