Need cpu model/type

[Anil]

dear

I need cpu model like 8088, 8086, 80286,...Pentium of the running system through the c/c++ program in dos platform

thanks a lot

anil

[Adek336]

//input:
MOV AH, 0xC9
MOV AL, 0x10
INT 15 ( or 0x15, don't know)

//output:
CF clear if success
CH:
03h    80386DX or clone
04h    80486
05h    Pentium
23h    80386SX or clone
33h    Intel i376
43h    80386SL or clone
A3h    IBM 386SLC
A4h    IBM 486SLC

found it on Ralf Brown's, hope it works and helps.

Cheers,
Adrian

[Adek336]

it rarely works;
if output AH = 0x80, 0x86 then function unsupported.

well, you'd have to be quite good at assembler to use this solution: download cputyp13.zip http://www.simtel.iif.hu/pub/pd/50095.html and extract the function from the source.

Cheers,
Adrian

[Anil]

I have tried the asm code in my c program as follows
#include<dos.h>
#include<stdio.h>
#include<conio.h>
void main()
{
    union REGS ourregs;
    ourregs.h.ah=0xC9;
    ourregs.h.al=0x10;
    int86(0x15,&ourregs,&ourregs);  //calling function with int 15h
    if(!ourregs.x.cflag)   // checking for cf clear or not
         printf("%x",ourregs.h.ch);
    else
         printf("error");
    getch();
}

but it won't work showing the error and i have also tried the content of ah and it is showing answer as 86h. and gone to the url as mr. Adek336 had specified. got the asm file but am not deep in the ASM. the exe provided in the zip file is showing the answer but it is the exe of asm and a need to write the code with in the c program

anil

[Adek336]

yea, it seems like bios functions are useless in cpu detection.

If you want to test if it is a 386 you may use this:
byte check386()
byte x;
{
  x = 1;
  $ PUSHF
  $ XOR AH, AH
  $ PUSH AX
  $ POPF
  $ PUSHF
  $ POP AX
  if (AH & 0xf0 == 0xf0) x = 0;

  $ MOV AH, 0x70
  $ PUSH AX
  $ POPF
  $ PUSHF
  $ POP AX
  if (AH & 0x70 <> 0x70) x = 0;

  $ POPF
  AL = x;
}

Cheers,
Adrian

[Anil]

Hai Adek336

sorry yar, i didn't understand the code you have written. any way i will try it in my c++ program. the main problem is i am not deep in the asm coding.

with luv,
anil