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New io handler functions

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1758
This commit is contained in:
Sjoerd van der Berg 2004-04-03 19:35:34 +00:00
parent d0e2bfa15f
commit 9cd769b878
23 changed files with 309 additions and 367 deletions
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19
src/hardware/cmos.cpp
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@ -62,12 +62,12 @@ static void cmos_checktimer(void) {
PIC_AddEvent(cmos_timerevent,cmos.timer.micro);
}
void cmos_selreg(Bit32u port,Bit8u val) {
void cmos_selreg(Bitu port,Bitu val,Bitu iolen) {
cmos.reg=val & 0x3f;
cmos.nmi=(val & 0x80)>0;
}
static void cmos_writereg(Bit32u port,Bit8u val) {
static void cmos_writereg(Bitu port,Bitu val,Bitu iolen) {
switch (cmos.reg) {
case 0x00: /* Seconds */
case 0x02: /* Minutes */
@ -84,10 +84,9 @@ static void cmos_writereg(Bit32u port,Bit8u val) {
LOG(LOG_BIOS,LOG_NORMAL)("CMOS:Trying to set alarm");
cmos.regs[cmos.reg]=val;
break;
case 0x0a: /* Status reg A */
cmos.regs[cmos.reg]=val & 0x7f;
if (val & 0x70!=0x20) LOG(LOG_BIOS,LOG_ERROR)("CMOS Illegal 22 stage divider value");
if ((val & 0x70)!=0x20) LOG(LOG_BIOS,LOG_ERROR)("CMOS Illegal 22 stage divider value");
cmos.timer.div=(val & 0xf);
cmos_checktimer();
break;
@ -110,7 +109,7 @@ static void cmos_writereg(Bit32u port,Bit8u val) {
#define MAKE_RETURN(_VAL) (cmos.bcd ? (((_VAL / 10) << 4) | (_VAL % 10)) : _VAL);
static Bit8u cmos_readreg(Bit32u port) {
static Bitu cmos_readreg(Bitu port,Bitu iolen) {
if (cmos.reg>0x3f) {
LOG(LOG_BIOS,LOG_ERROR)("CMOS:Read from illegal register %x",cmos.reg);
return 0xff;
@ -189,14 +188,14 @@ void CMOS_SetRegister(Bitu regNr, Bit8u val)
};
void CMOS_Init(Section* sec) {
IO_RegisterWriteHandler(0x70,cmos_selreg,"CMOS");
IO_RegisterWriteHandler(0x71,cmos_writereg,"CMOS");
IO_RegisterReadHandler(0x71,cmos_readreg,"CMOS");
IO_RegisterWriteHandler(0x70,cmos_selreg,IO_MB);
IO_RegisterWriteHandler(0x71,cmos_writereg,IO_MB);
IO_RegisterReadHandler(0x71,cmos_readreg,IO_MB);
cmos.timer.enabled=false;
cmos.reg=0xa;
cmos_writereg(0x71,0x26);
cmos_writereg(0x71,0x26,1);
cmos.reg=0xb;
cmos_writereg(0x71,0);
cmos_writereg(0x71,0,1);
/* Fill in extended memory size */
Bitu exsize=(MEM_TotalPages()*4)-1024;
cmos.regs[0x17]=(Bit8u)exsize;