From: Alan Cox <alan@linux.intel.com>
Date: Sat, 17 Nov 2018 12:48:29 +0000 (+0000)
Subject: usermem-z80-thunked: Fix crash if we uzero exactly one byte
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=08e1e22d875114509660d9ebeea207fe7686c2ea;p=FUZIX.git

usermem-z80-thunked: Fix crash if we uzero exactly one byte
---

diff --git a/Kernel/usermem_std-z80-thunked.s b/Kernel/usermem_std-z80-thunked.s
index 65dd9e57..2e743629 100644
--- a/Kernel/usermem_std-z80-thunked.s
+++ b/Kernel/usermem_std-z80-thunked.s
@@ -184,7 +184,7 @@ zeroit:
 	dec bc
 	ld a,b
 	or c
-	ret z
+	jp z, map_kernel_low
 	ld e,l
 	ld d,h
 	inc de