valter/dosbox-staging
1
0
Fork 0
Code Releases Activity

Changed interrupt 0x11 to read from bios segment

Browse source 
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1068
This commit is contained in:
Sjoerd van der Berg 2003-06-15 20:35:37 +00:00
parent 9db66c505b
commit 1dbdb9412a
1 changed files with 5 additions and 24 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

29
src/ints/bios.cpp
View file

@ -106,30 +106,7 @@ static Bitu INT1A_Handler(void) {
}
static Bitu INT11_Handler(void) {
/*
AX = BIOS equipment list word
bits
0 floppy disk(s) installed (see bits 6-7)
1 80x87 coprocessor installed
2,3 number of 16K banks of RAM on motherboard (PC only)
number of 64K banks of RAM on motherboard (XT only)
2 pointing device installed (PS)
3 unused (PS)
4-5 initial video mode
00 EGA, VGA, or PGA
01 40x25 color
10 80x25 color
11 80x25 monochrome
6-7 number of floppies installed less 1 (if bit 0 set)
8 DMA support installed (PCjr, some Tandy 1000s, 1400LT)
9-11 number of serial ports installed
12 game port installed
13 serial printer attached (PCjr)
internal modem installed (PC/Convertible)
14-15 number of parallel ports installed
*/
reg_ax=0x104D;
LOG(LOG_BIOS,LOG_NORMAL)("INT11:Equipment list returned %X",reg_ax);
reg_ax=mem_readw(BIOS_CONFIGURATION);
return CBRET_NONE;
}
@ -342,12 +319,16 @@ void BIOS_Init(Section* sec) {
CALLBACK_Setup(call_int1,&INT1_Single_Step,CB_IRET);
RealSetVec(0x1,CALLBACK_RealPointer(call_int1));
/* Setup some stuff in 0x40 bios segment */
/* Test for parallel port */
if (IO_Read(0x378)!=0xff) real_writew(0x40,0x08,0x378);
/* Test for serial port */
Bitu index=0;
if (IO_Read(0x3f8)!=0xff) real_writew(0x40,(index++)*2,0x3f8);
if (IO_Read(0x2f8)!=0xff) real_writew(0x40,(index++)*2,0x2f8);
/* Setup equipment list */
mem_writew(BIOS_CONFIGURATION,0xc823); //1 Floppy,FPU,2 serial, 1 parallel
}