From 4537db483045e090a66db262752b988898f1abf7 Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Wed, 30 Jul 2025 15:04:30 +0200
Subject: [PATCH] PIC: Ignore IRQ raise or lower then the PIC is not yet
 properly set up.

---
 src/pic.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/pic.c b/src/pic.c
index 4b8993322..446ea1361 100644
--- a/src/pic.c
+++ b/src/pic.c
@@ -693,6 +693,13 @@ picint_common(uint16_t num, int level, int set, uint8_t *irq_state)
     uint16_t lines = level ? 0x0000 : num;
     pic_t   *dev;
 
+    /*
+       Do this because some emulated cards will, for whatever reason, attempt to
+       raise an IRQ at init when the PIC has not yet been properly initialized.
+     */
+    if (update_pending == NULL)
+        return;
+
     /* Make sure to ignore all slave IRQ's, and in case of AT+,
        translate IRQ 2 to IRQ 9. */
     for (uint8_t i = 0; i < 8; i++) {