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added PIC_SetIRQMask

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1480
This commit is contained in:
Peter Veenstra 2003-12-10 14:55:49 +00:00
parent 6fdc7a5359
commit 60e425dfe9
2 changed files with 16 additions and 2 deletions
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1
include/pic.h
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@ -63,5 +63,6 @@ void PIC_AddEvent(PIC_EventHandler handler,Bitu delay);
void PIC_RemoveEvents(PIC_EventHandler handler);
void PIC_SetIRQMask(Bitu irq, bool masked);
#endif

17
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 1.14 2003-11-27 18:57:42 qbix79 Exp $ */
/* $Id: pic.cpp,v 1.15 2003-12-10 14:55:08 qbix79 Exp $ */
#include <list>
@ -261,6 +261,19 @@ void PIC_runIRQs(void) {
}
}
void PIC_SetIRQMask(Bitu irq, bool masked) {
irqs[irq].masked=masked;
if (irqs[irq].active && !irqs[irq].masked) {
PIC_IRQCheck|=(1 << (irq));
} else {
PIC_IRQCheck&=~(1 << (irq));
};
if (PIC_IRQCheck) {
CPU_CycleLeft+=CPU_Cycles;
CPU_Cycles=0;
}
}
static void AddEntry(PICEntry * entry) {
PICEntry * find_entry=pic.next_entry;
if (!find_entry) {
@ -483,7 +496,7 @@ void PIC_Init(Section* sec) {
irqs[0].masked=false; /* Enable system timer */
irqs[1].masked=false; /* Enable Keyboard IRQ */
irqs[8].masked=false; /* Enable RTC IRQ */
irqs[12].masked=false; /* Enable Mouse IRQ */
/* irqs[12].masked=false; moved to mouse.cpp */ /* Enable Mouse IRQ */
IO_RegisterReadHandler(0x20,read_command,"Master PIC Command");
IO_RegisterReadHandler(0x21,read_data,"Master PIC Data");
IO_RegisterWriteHandler(0x20,write_command,"Master PIC Command");