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add cga crtc mirror-registers (fixes Prohibition); thanks to jmk

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3146
This commit is contained in:
Sebastian Strohhäcker 2008-04-21 19:55:02 +00:00
parent a02f75204a
commit fb9bded44e
1 changed files with 12 additions and 3 deletions
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15
src/hardware/vga_other.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (C) 2002-2007 The DOSBox Team
* Copyright (C) 2002-2008 The DOSBox Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: vga_other.cpp,v 1.21 2007-02-01 16:24:03 c2woody Exp $ */
/* $Id: vga_other.cpp,v 1.22 2008-04-21 19:55:02 c2woody Exp $ */
#include <string.h>
#include <math.h>
@ -509,7 +509,16 @@ void VGA_SetupOther(void) {
IO_RegisterWriteHandler(0x3da,write_pcjr,IO_MB);
IO_RegisterWriteHandler(0x3df,write_pcjr,IO_MB);
}
if (machine==MCH_CGA || machine==MCH_HERC || IS_TANDY_ARCH) {
if (machine==MCH_CGA) {
Bitu base=0x3d0;
for (Bitu port_ct=0; port_ct<4; port_ct++) {
IO_RegisterWriteHandler(base+port_ct*2,write_crtc_index_other,IO_MB);
IO_RegisterWriteHandler(base+port_ct*2+1,write_crtc_data_other,IO_MB);
IO_RegisterReadHandler(base+port_ct*2,read_crtc_index_other,IO_MB);
IO_RegisterReadHandler(base+port_ct*2+1,read_crtc_data_other,IO_MB);
}
}
if (machine==MCH_HERC || IS_TANDY_ARCH) {
Bitu base=machine==MCH_HERC ? 0x3b4 : 0x3d4;
IO_RegisterWriteHandler(base,write_crtc_index_other,IO_MB);
IO_RegisterWriteHandler(base+1,write_crtc_data_other,IO_MB);