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Some small changes

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2541
This commit is contained in:
Peter Veenstra 2006-03-12 21:14:45 +00:00
parent 46e1cb9a37
commit 3ceb01754e
1 changed files with 14 additions and 5 deletions
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19
src/hardware/pic.cpp
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: pic.cpp,v 1.33 2006-02-09 11:47:49 qbix79 Exp $ */
/* $Id: pic.cpp,v 1.34 2006-03-12 21:14:45 qbix79 Exp $ */
#include <list>
@ -320,6 +320,7 @@ void PIC_runIRQs(void) {
}
void PIC_SetIRQMask(Bitu irq, bool masked) {
if(irqs[irq].masked == masked) return; /* Do nothing if mask doesn't change */
bool old_irq2_mask = irqs[2].masked;
irqs[irq].masked=masked;
if(irq < 8) {
@ -453,12 +454,18 @@ bool PIC_RunQueue(void) {
//Irq 9-2 calling code
static Bitu INT71_Handler() {
CALLBACK_RunRealInt(0xa);
IO_Write(0xa0,0x61);
CALLBACK_RunRealInt(0xa);
return CBRET_NONE;
}
static Bitu INT0A_Handler() {
IO_Write(0x20,0x62);
return CBRET_NONE;
}
/* The TIMER Part */
struct TickerBlock {
TIMER_TickHandler handler;
@ -515,7 +522,7 @@ class PIC:public Module_base{
private:
IO_ReadHandleObject ReadHandler[4];
IO_WriteHandleObject WriteHandler[4];
CALLBACK_HandlerObject callback;
CALLBACK_HandlerObject callback[2];
public:
PIC(Section* configuration):Module_base(configuration){
/* Setup pic0 and pic1 with initial values like DOS has normally */
@ -570,8 +577,10 @@ public:
pic.next_entry=0;
/* Irq 9 and 2 thingie
* Should be done by bios but then it overwrites the mpu handler */
callback.Install(&INT71_Handler,CB_IRET,"irq 9 bios");
callback.Set_RealVec(0x71);
callback[0].Install(&INT71_Handler,CB_IRET,"irq 9 bios");
callback[0].Set_RealVec(0x71);
callback[1].Install(&INT0A_Handler,CB_IRET,"irq 2 bios");
callback[1].Set_RealVec(0xA);
}
~PIC(){
}