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Changed wait flag handling to use RTC

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Changed extended memory size to read it out from CMOS
Added getting time from RTC call.


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@963
This commit is contained in:
Sjoerd van der Berg 2003-04-27 07:03:37 +00:00
parent 1f5dac8c97
commit 9e0452b931
1 changed files with 46 additions and 14 deletions
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60
src/ints/bios.cpp
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@ -26,7 +26,27 @@
#include "joystick.h"
static Bitu call_int1a,call_int11,call_int8,call_int17,call_int12,call_int15,call_int1c;
static Bitu call_int1;
static Bitu call_int1,call_int70;
static Bitu INT70_Handler(void) {
if (mem_readb(BIOS_WAIT_FLAG_ACTIVE)) {
Bits count=mem_readd(BIOS_WAIT_FLAG_COUNT);
if (count>997) {
mem_writed(BIOS_WAIT_FLAG_COUNT,count-997);
} else {
mem_writed(BIOS_WAIT_FLAG_COUNT,0);
PhysPt where=Real2Phys(mem_readd(BIOS_WAIT_FLAG_POINTER));
mem_writeb(where,mem_readb(where)|0x80);
mem_writeb(BIOS_WAIT_FLAG_ACTIVE,0);
IO_Write(0x70,0xb);
IO_Write(0x71,IO_Read(0x71)&~0x40);
}
}
/* Signal EOI to both pics */
IO_Write(0xa0,0x20);
IO_Write(0x20,0x20);
return 0;
}
static Bitu INT1A_Handler(void) {
switch (reg_ah) {
@ -42,9 +62,14 @@ static Bitu INT1A_Handler(void) {
mem_writed(BIOS_TIMER,(reg_cx<<16)|reg_dx);
break;
case 0x02: /* GET REAL-TIME CLOCK TIME (AT,XT286,PS) */
reg_dx=reg_cx=0;
IO_Write(0x70,0x04); //Hours
reg_ch=IO_Read(0x71);
IO_Write(0x70,0x02); //Minutes
reg_cl=IO_Read(0x71);
IO_Write(0x70,0x00); //Seconds
reg_dh=IO_Read(0x71);
reg_dl=0; //Daylight saving disabled
CALLBACK_SCF(false);
LOG(LOG_BIOS,"INT1A:02:Faked RTC get time call");
break;
case 0x04: /* GET REAL-TIME ClOCK DATA (AT,XT286,PS) */
reg_dx=reg_cx=0;
@ -149,11 +174,6 @@ static Bitu INT17_Handler(void) {
return CBRET_NONE;
}
static void WaitFlagEvent(void) {
PhysPt where=Real2Phys(mem_readd(BIOS_WAIT_FLAG_POINTER));
mem_writeb(where,mem_readb(where)|0x80);
mem_writeb(BIOS_WAIT_FLAG_ACTIVE,0);
}
static Bitu INT15_Handler(void) {
switch (reg_ah) {
@ -170,14 +190,19 @@ static Bitu INT15_Handler(void) {
break;
case 0x83: /* BIOS - SET EVENT WAIT INTERVAL */
{
if (mem_readb(BIOS_WAIT_FLAG_ACTIVE)) break;
Bit32s count=(reg_cx<<16)|reg_dx;
if (count<1000) count=1000;
if (mem_readb(BIOS_WAIT_FLAG_ACTIVE)) {
reg_ah=0x80;
CALLBACK_SCF(true);
break;
}
Bit32u count=(reg_cx<<16)|reg_dx;
mem_writed(BIOS_WAIT_FLAG_POINTER,RealMake(SegValue(es),reg_bx));
mem_writed(BIOS_WAIT_FLAG_COUNT,count);
mem_writeb(BIOS_WAIT_FLAG_ACTIVE,1);
PIC_RemoveEvents(&WaitFlagEvent);
PIC_AddEvent(&WaitFlagEvent,count);
/* Reprogram RTC to start */
IO_Write(0x70,0xb);
IO_Write(0x71,IO_Read(0x71)|0x40);
CALLBACK_SCF(false);
}
break;
case 0x84: /* BIOS - JOYSTICK SUPPORT (XT after 11/8/82,AT,XT286,PS) */
@ -214,7 +239,10 @@ static Bitu INT15_Handler(void) {
CALLBACK_SCF(false);
}
case 0x88: /* SYSTEM - GET EXTENDED MEMORY SIZE (286+) */
reg_ax=0;
IO_Write(0x70,0x30);
reg_al=IO_Read(0x71);
IO_Write(0x70,0x31);
reg_ah=IO_Read(0x71);
CALLBACK_SCF(false);
break;
case 0x90: /* OS HOOK - DEVICE BUSY */
@ -297,6 +325,10 @@ void BIOS_Init(Section* sec) {
call_int1c=CALLBACK_Allocate();
CALLBACK_Setup(call_int1c,&INT1C_Handler,CB_IRET);
RealSetVec(0x1C,CALLBACK_RealPointer(call_int1c));
/* IRQ 8 RTC Handler */
call_int70=CALLBACK_Allocate();
CALLBACK_Setup(call_int70,&INT70_Handler,CB_IRET);
RealSetVec(0x70,CALLBACK_RealPointer(call_int70));
/* Some defeault CPU error interrupt handlers */
call_int1=CALLBACK_Allocate();