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Message-ID: <47A9956C.90506@reactos.org>
Date: Wed, 06 Feb 2008 12:09:32 +0100
From: =?ISO-8859-1?Q?Herv=E9_Poussineau?= <hpoussin@reactos.org>
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Subject: [Qemu-devel] [PATCH] Fix parallel port software emulation
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To: qemu-devel@nongnu.org

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Hi,

Parallel port control register should always have the 0xc0 bits enabled=20
(like this is already done in Qemu parallel port hardware emulation).

Status register should also start with EPP timeout bit set, like on real=20
hardware.

Attached patch fixes both issues.

Herv=E9

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 filename="parallel-sw.patch"

Index: parallel.c
===================================================================
RCS file: /sources/qemu/qemu/hw/parallel.c,v
retrieving revision 1.12
diff -u -r1.12 parallel.c
--- parallel.c	18 Nov 2007 01:44:37 -0000	1.12
+++ parallel.c	6 Feb 2008 11:08:01 -0000
@@ -101,6 +101,7 @@
         parallel_update_irq(s);
         break;
     case PARA_REG_CTR:
+        val |= 0xc0;
         if ((val & PARA_CTR_INIT) == 0 ) {
             s->status = PARA_STS_BUSY;
             s->status |= PARA_STS_ACK;
@@ -414,8 +415,10 @@
     s->status |= PARA_STS_ACK;
     s->status |= PARA_STS_ONLINE;
     s->status |= PARA_STS_ERROR;
+    s->status |= PARA_STS_TMOUT;
     s->control = PARA_CTR_SELECT;
     s->control |= PARA_CTR_INIT;
+    s->control |= 0xc0;
     s->irq = irq;
     s->irq_pending = 0;
     s->chr = chr;


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