谁能帮我解释一下这段简单代码，搞明白大意了就结贴 ( 积分: 200 )

c语言我搞不懂，如果解释中能带"相当于delphi 的什么什么"最好：）
#include "stdio.h"
#include "dos.h"
char *GetAscii(unsigned int inData[], int offStart, int offEnd);
int main(void)
{
unsigned int diskData[256];
/* Disk data */
unsigned int offset;
/* Disk data offset */
int loop;
int numDrv;
/* Number of IDE hard drives */
union REGS registers;
unsigned int biosCyl[2];
/* Cylinders, Heads, Sectors */
unsigned int biosHead[2];
unsigned int biosSec [2];
numDrv = peekb(0x40, 0x75);
/* BIOS Data area, Number of Hard disks */
for (loop = 0;
loop < numDrv;
loop++)
{
while (inp(0x01f7) != 0x50);
/* Wait for controller not busy */
outp(0x01f6, (loop == 0 ? 0xa0 : 0xb0));
/* Get first/second drive */
outp(0x01f7, 0xec);
/* Get drive info data */
while (inp(0x1f7) != 0x58);
/* Wait for data ready */
for (offset = 0;
offset != 256;
offset++) /* Read "sector" */
diskData[offset] = inp(0x1f0);
/* Get BIOS drive info */
registers.h.ah = 0x08;
/* Get drive info */
registers.h.dl = 0x80 + loop;
/* Drive is 80H for Disk 0, 81H for Disk 1 */
int86(0x13, &amp;registers,&amp;registers);
if (!registers.x.cflag) /* All OK if carry not set */
{
biosHead[loop] = registers.h.dh + 1;
/* Heads are from 0 */
biosSec[loop] = registers.h.cl &amp;
0x3f;
/* sec is bits 5 - 0 */
/* +1 because starts from 0 and +1 for FDISK leaving one out */
biosCyl[loop] = ((registers.h.cl &amp;
0xc0) << 2) + registers.h.ch + 2;
} /* end of if */
printf("DRIVE %d:/n", loop);
printf("Model Number______________________: %s/n", GetAscii(diskData, 27, 46));
printf("Serial Number_____________________: %s/n", GetAscii(diskData, 10, 19));
printf("Controller Revision Number________: %s/n/n", GetAscii(diskData, 23, 26));
printf("Able todo
do
uble Word Transfer___: %6s/n", (diskData[48] == 0 ? "No" : "Yes"));
printf("Controller type___________________: %04X/n", diskData[20]);
printf("Controller buffer size (bytes)____: %6u/n", diskData[21] * 512);
printf("Number of ECC bytes transferred___: %6u/n", diskData[22]);
printf("Number of sectors per interrupt___: %6u/n/n", diskData[47]);
printf("Hard Disk Reports/n");
printf("Number of Cylinders (Fixed)_______: %6u/n", diskData[1]);
printf("Number of Heads___________________: %6u/n", diskData[3]);
printf("Number of Sectors per Track_______: %6u/n/n", diskData[6]);
printf("BIOS Reports/n");
printf("Number of Cylinders_______________: %6u/n", biosCyl[loop]);
printf("Number of Heads___________________: %6u/n", biosHead[loop]);
printf("Number of Sectors per Track_______: %6u/n/n", biosSec[loop]);
printf("Press any key to continue.../n/n");
getch();
} /* end of for */
return 0;
} /* main() */
char *GetAscii(unsigned int inData[], int offStart, int offEnd)
{
static char retVal[255];
int loop, loop1;
for (loop = offStart, loop1 = 0;
loop <= offend;
loop++)
{
retVal[loop1++] = (char )(inData[loop] / 256);
/* Get High byte */
retVal[loop1++] = (char )(inData[loop] % 256);
/* Get Low byte */
} /* end of for */
retVal[loop1] = '/0';
/* Make sure it ends in a NULL character */
return retVal;
} /* GetAscii() */
=========================================================================
就是上面这段，请帮帮忙

c语言我搞不懂，如果解释中能带"相当于delphi 的什么什么"最好：）
#include "stdio.h"
#include "dos.h"
char *GetAscii(unsigned int inData[], int offStart, int offEnd);
int main(void)
{
unsigned int diskData[256];
/* Disk data */
unsigned int offset;
/* Disk data offset */
int loop;
int numDrv;
/* Number of IDE hard drives */
union REGS registers;
unsigned int biosCyl[2];
/* Cylinders, Heads, Sectors */
unsigned int biosHead[2];
unsigned int biosSec [2];
numDrv = peekb(0x40, 0x75);
/* BIOS Data area, Number of Hard disks */
for (loop = 0;
loop < numDrv;
loop++)
{
while (inp(0x01f7) != 0x50);
/* Wait for controller not busy */
outp(0x01f6, (loop == 0 ? 0xa0 : 0xb0));
/* Get first/second drive */
outp(0x01f7, 0xec);
/* Get drive info data */
while (inp(0x1f7) != 0x58);
/* Wait for data ready */
for (offset = 0;
offset != 256;
offset++) /* Read "sector" */
diskData[offset] = inp(0x1f0);
/* Get BIOS drive info */
registers.h.ah = 0x08;
/* Get drive info */
registers.h.dl = 0x80 + loop;
/* Drive is 80H for Disk 0, 81H for Disk 1 */
int86(0x13, &amp;registers,&amp;registers);
if (!registers.x.cflag) /* All OK if carry not set */
{
biosHead[loop] = registers.h.dh + 1;
/* Heads are from 0 */
biosSec[loop] = registers.h.cl &amp;
0x3f;
/* sec is bits 5 - 0 */
/* +1 because starts from 0 and +1 for FDISK leaving one out */
biosCyl[loop] = ((registers.h.cl &amp;
0xc0) << 2) + registers.h.ch + 2;
} /* end of if */
printf("DRIVE %d:/n", loop);
printf("Model Number______________________: %s/n", GetAscii(diskData, 27, 46));
printf("Serial Number_____________________: %s/n", GetAscii(diskData, 10, 19));
printf("Controller Revision Number________: %s/n/n", GetAscii(diskData, 23, 26));
printf("Able todo
do
uble Word Transfer___: %6s/n", (diskData[48] == 0 ? "No" : "Yes"));
printf("Controller type___________________: %04X/n", diskData[20]);
printf("Controller buffer size (bytes)____: %6u/n", diskData[21] * 512);
printf("Number of ECC bytes transferred___: %6u/n", diskData[22]);
printf("Number of sectors per interrupt___: %6u/n/n", diskData[47]);
printf("Hard Disk Reports/n");
printf("Number of Cylinders (Fixed)_______: %6u/n", diskData[1]);
printf("Number of Heads___________________: %6u/n", diskData[3]);
printf("Number of Sectors per Track_______: %6u/n/n", diskData[6]);
printf("BIOS Reports/n");
printf("Number of Cylinders_______________: %6u/n", biosCyl[loop]);
printf("Number of Heads___________________: %6u/n", biosHead[loop]);
printf("Number of Sectors per Track_______: %6u/n/n", biosSec[loop]);
printf("Press any key to continue.../n/n");
getch();
} /* end of for */
return 0;
} /* main() */
char *GetAscii(unsigned int inData[], int offStart, int offEnd)
{
static char retVal[255];
int loop, loop1;
for (loop = offStart, loop1 = 0;
loop <= offend;
loop++)
{
retVal[loop1++] = (char )(inData[loop] / 256);
/* Get High byte */
retVal[loop1++] = (char )(inData[loop] % 256);
/* Get Low byte */
} /* end of for */
retVal[loop1] = '/0';
/* Make sure it ends in a NULL character */
return retVal;
} /* GetAscii() */
=========================================================================
就是上面这段，请帮帮忙

里面的注释已经很详细了，一个读取BIOS信息的的代码。

我大致清楚是读取bios的，它仅仅是读取bios吗？

我看不是，但是我的AMD无能为力。

从BIOS数据中读出硬盘参数，显示

读bios信息

全错了
是直接I/O读写IDE控制器，取硬盘信息。

呵呵， C的代码就是精练
我认为是读硬盘信息的！

是读取硬盘信息撒，我说错了吗？
见：http://www.delphibbs.com/delphibbs/dispq.asp?lid=3129101
但是程序运行得不到结果，不知道什么原因。
其实知道它做了什么就可以了，没必要知道相当于delphi 的什么什么(因为实现方式不一样)。

应该是读硬盘信息。。。

在纯dos下运行