From 0b231b503348dea54f56dd7b78409dfb325ea644 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?N=C3=A9stor=20Soriano?= <konamiman@konamiman.com>
Date: Tue, 22 Mar 2022 10:08:22 +0100
Subject: [PATCH] Fix: incorrect setting of UD_ACLU when freeing a FAT chain
 (#96)

---
 source/kernel/bank2/fat.mac | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/source/kernel/bank2/fat.mac b/source/kernel/bank2/fat.mac
index a1e1976c..2f47ff95 100644
--- a/source/kernel/bank2/fat.mac
+++ b/source/kernel/bank2/fat.mac
@@ -898,9 +898,11 @@ zero_dsec_loop:	ld	(hl),c			; the data area of buffer
 		dec de          ;DE = new value
 		or a
 		sbc hl,de       ;HL = current value - new value, Cy=1 if new > current
-		call nc,ACLU_SET
 		pop hl          ;Restore address of unit descriptor
-		ret
+		ret c
+		ld de,(FAT_CHAIN##)
+		dec de
+		jp ACLU_SET
 
 frchlp3:
 		push hl			;Preserve address of unit descriptor