valter/dosbox-staging
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Added SDA.

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Update DTA/PSP to use SDA.
Added some more pic commands.
Cleaned dos.cpp up a bit.
Handled some more calls in dos.cpp.
Changed execute and terminate to mess less with the dta.
Removed all dta references and changes in PSP.
Added some messages to messagefile for mount.


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1787
This commit is contained in:
Peter Veenstra 2004-05-04 18:34:08 +00:00
parent afbc7f8828
commit e3a7a48687
15 changed files with 271 additions and 180 deletions
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20
src/hardware/pic.cpp
View file

@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: pic.cpp,v 1.20 2004-04-03 19:34:10 harekiet Exp $ */
/* $Id: pic.cpp,v 1.21 2004-05-04 18:34:08 qbix79 Exp $ */
#include <list>
@ -44,6 +44,7 @@ struct PIC_Controller {
Bitu active;
Bitu inservice;
bool special;
bool auto_eoi;
bool request_issr;
Bit8u vector_base;
@ -103,6 +104,11 @@ static void write_command(Bitu port,Bitu val,Bitu iolen) {
}
} //TODO Warnings?
break;
case 0x4a: /* OCW3 select read interrupt request register */
LOG(LOG_PIC,LOG_NORMAL)("port %X : special OFF",port);
pic->special = false;
pic->request_issr = false;
break;
case 0x60:case 0x61:case 0x62:case 0x63:case 0x64:case 0x65:case 0x66:case 0x67:
/* Spefific EOI 0-7 */
if (PIC_IRQActive==(irq_base+val-0x60U)) {
@ -117,6 +123,15 @@ static void write_command(Bitu port,Bitu val,Bitu iolen) {
}
}//TODO Warnings?
break;
case 0x68:/* OCW3 select */
pic->special=true;
LOG(LOG_PIC,LOG_NORMAL)("port %X : special ON",port);
break;
case 0x6b: /* OCW3 select read interrupt in-service register */
LOG(LOG_PIC,LOG_NORMAL)("port %X : special ON",port);
pic->special = true;
pic->request_issr = true;
break;
case 0xC0:case 0xC1:case 0xC2:case 0xC3:case 0xC4:case 0xC5:case 0xC6:case 0xC7:
/* Priority order, no need for it */
break;
@ -244,7 +259,7 @@ void PIC_runIRQs(void) {
Bit16u activeIRQ = PIC_IRQActive;
if (activeIRQ==PIC_NOIRQ) activeIRQ = 16;
for (i=0;i<=15;i++) {
if (IRQ_priority_lookup[i]<IRQ_priority_lookup[activeIRQ]){
if ((IRQ_priority_lookup[i]<IRQ_priority_lookup[activeIRQ]) || (pics[ (i<8)?0:1].special) ){
if (!irqs[i].masked && irqs[i].active) {
irqs[i].active=false;
PIC_IRQCheck&=~(1 << i);
@ -443,6 +458,7 @@ void PIC_Init(Section* sec) {
pics[i].auto_eoi=false;
pics[i].auto_eoi=false;
pics[i].request_issr=false;
pics[i].special=false;
pics[i].icw_index=0;
pics[i].icw_words=0;
}