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have irq6 use a different default handler to work around a bug in a game (thanks to ripsaw, should fix design your own railroad)

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3263
This commit is contained in:
Sebastian Strohhäcker 2009-01-18 13:57:45 +00:00
parent a5bbd753a1
commit a6d6dce331
1 changed files with 15 additions and 12 deletions
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27
src/cpu/callback.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (C) 2002-2007 The DOSBox Team
* Copyright (C) 2002-2009 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: callback.cpp,v 1.38 2009-01-14 22:16:00 qbix79 Exp $ */
/* $Id: callback.cpp,v 1.39 2009-01-18 13:57:45 c2woody Exp $ */
#include <stdlib.h>
#include <string.h>
@ -34,7 +34,7 @@
CallBack_Handler CallBack_Handlers[CB_MAX];
char* CallBack_Description[CB_MAX];
static Bitu call_stop,call_idle,call_default;
static Bitu call_stop,call_idle,call_default,call_default2;
Bitu call_priv_io;
static Bitu illegal_handler(void) {
@ -77,11 +77,11 @@ void CALLBACK_Idle(void) {
static Bitu default_handler(void) {
LOG(LOG_CPU,LOG_ERROR)("Illegal Unhandled Interrupt Called %X",lastint);
return CBRET_NONE;
};
}
static Bitu stop_handler(void) {
return CBRET_STOP;
};
}
@ -112,13 +112,13 @@ void CALLBACK_SZF(bool val) {
Bit16u tempf=mem_readw(SegPhys(ss)+reg_sp+4) & 0xFFBF;
Bit16u newZF=(val==true) << 6;
mem_writew(SegPhys(ss)+reg_sp+4,(tempf | newZF));
};
}
void CALLBACK_SCF(bool val) {
Bit16u tempf=mem_readw(SegPhys(ss)+reg_sp+4) & 0xFFFE;
Bit16u newCF=(val==true);
mem_writew(SegPhys(ss)+reg_sp+4,(tempf | newCF));
};
}
void CALLBACK_SetDescription(Bitu nr, const char* descr) {
if (descr) {
@ -126,12 +126,12 @@ void CALLBACK_SetDescription(Bitu nr, const char* descr) {
strcpy(CallBack_Description[nr],descr);
} else
CallBack_Description[nr] = 0;
};
}
const char* CALLBACK_GetDescription(Bitu nr) {
if (nr>=CB_MAX) return 0;
return CallBack_Description[nr];
};
}
Bitu CALLBACK_SetupExtra(Bitu callback, Bitu type, PhysPt physAddress, bool use_cb=true) {
if (callback>=CB_MAX)
@ -524,9 +524,11 @@ void CALLBACK_Init(Section* sec) {
phys_writeb(CALLBACK_PhysPointer(call_idle)+13,0x38);
phys_writew(CALLBACK_PhysPointer(call_idle)+14,call_idle);
/* Setup all Interrupt to point to the default handler */
/* Default handlers for unhandled interrupts that have to be non-null */
call_default=CALLBACK_Allocate();
CALLBACK_Setup(call_default,&default_handler,CB_IRET,"default");
call_default2=CALLBACK_Allocate();
CALLBACK_Setup(call_default2,&default_handler,CB_IRET,"default");
/* Only setup default handler for first half of interrupt table */
for (i=0;i<0x40;i++) {
@ -544,10 +546,11 @@ void CALLBACK_Init(Section* sec) {
}
// setup a few interrupt handlers that point to bios IRETs by default
real_writed(0,0x66*4,CALLBACK_RealPointer(call_default)); //war2d
real_writed(0,0x0e*4,CALLBACK_RealPointer(call_default2)); //design your own railroad
real_writed(0,0x66*4,CALLBACK_RealPointer(call_default)); //war2d
real_writed(0,0x67*4,CALLBACK_RealPointer(call_default));
real_writed(0,0x68*4,CALLBACK_RealPointer(call_default));
real_writed(0,0x5c*4,CALLBACK_RealPointer(call_default)); //Network stuff
real_writed(0,0x5c*4,CALLBACK_RealPointer(call_default)); //Network stuff
//real_writed(0,0xf*4,0); some games don't like it
call_priv_io=CALLBACK_Allocate();