From 72ba373765af20594a45142cc9bb3c5fe5bb14e6 Mon Sep 17 00:00:00 2001
From: Leo C <erbl259-lmu@yahoo.de>
Date: Wed, 29 Jun 2016 16:23:28 +0200
Subject: [PATCH] BIOS debugging with ddtz: Set 3F to 81 to en fifo inits.

---
 cbios/ascii.180 | 8 ++++++++
 cbios/boot.180  | 3 ++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/cbios/ascii.180 b/cbios/ascii.180
index 0ee942d..d329de4 100644
--- a/cbios/ascii.180
+++ b/cbios/ascii.180
@@ -105,6 +105,14 @@ IOCTL_MAX equ	($-ioctl_ftab)/2
 ;
 
 asci_ioctl:
+	ld	a,b
+	cp	1
+	jr	nz,asioc_1
+	ld	a,(INIDONE)
+	and	80h
+	cp	INIDONEVAL
+	ret	z
+asioc_1:
 	push	hl
 	ex	(sp),ix
 	ld	(ix+o.absdev),b
diff --git a/cbios/boot.180 b/cbios/boot.180
index 18a53f4..566f190 100644
--- a/cbios/boot.180
+++ b/cbios/boot.180
@@ -40,6 +40,7 @@ tpa$bank equ	0
 
 hwinit:
 	ld	a,(INIDONE)
+	and	80h
 	cp	INIDONEVAL
 	jr	z,hwini_skip
 	ld	hl,hwini_tab
@@ -63,7 +64,7 @@ hwini_skip:
 	ld	(@covec),hl
 	ld	hl,0000000000000000b	; assign printer to nothing:
 	ld	(@lovec),hl
-	ld	hl,0100000000000000b	; assign AUX to ASCI0:
+	ld	hl,0000000000000000b	; assign AUX to ASCI0:
 	ld	(@aivec),hl
 	ld	(@aovec),hl
 
-- 
2.39.2