From 931e223493c2aaa08fc92cd6499f4a2e882ac055 Mon Sep 17 00:00:00 2001
From: dwarning <dwarning>
Date: Thu, 25 Sep 2025 17:09:33 +0200
Subject: [PATCH] correct init state vector for qth integration

---
 src/spicelib/devices/dio/dioload.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/spicelib/devices/dio/dioload.c b/src/spicelib/devices/dio/dioload.c
index 9c3aa3f00..e8f1dd755 100644
--- a/src/spicelib/devices/dio/dioload.c
+++ b/src/spicelib/devices/dio/dioload.c
@@ -492,6 +492,10 @@ next1:
                     }
                     if (selfheat)
                     {
+                        if (ckt->CKTmode & MODEINITTRAN) {
+                            *(ckt->CKTstate1 + here->DIOqth) =
+                                    *(ckt->CKTstate0 + here->DIOqth);
+                        }
                         error = NIintegrate(ckt, &gcTt, &ceqqth, model->DIOcth0, here->DIOqth);
                         if (error) return(error);
                         if (ckt->CKTmode & MODEINITTRAN) {