倒塌了~~~4种IO战法全读出为0,看来要改变战术了~~~
谢谢各位!!!
请明白人看俺哪里出错了...
谢谢!!!
#define HDC_FIXED 0x3F6
#define HDC_FIXED_IRQ 0x02
#define HDC_SDH 0x1F6
#define HDC_STATUS 0x1F7
#define HDC_COMMAND 0x1F7
#define HDC_DATA 0x1F0
#define HDC_COMMAND_READPAR 0xEC
#define HDC_STATUS_BUSY 0x80
int al;
int i;
WORD pw[256];
//方法0
outp(HDC_FIXED, HDC_FIXED_IRQ);
outp(HDC_SDH, 0xA0);
outp(HDC_COMMAND, HDC_COMMAND_READPAR);
while(inp(HDC_STATUS) & HDC_STATUS_BUSY);
for (i=0; i< 256; i++)
{
pw = inpw(0x1F0);
}
/*方法1
while (inp (0x1F7) >= 0x80);//读取ATA设备的命令
outp(0x1F6, 0x0A0);
outp(0x1F7, 0x10);
while(inp (0x1F7) >= 0x80);
if(inp (0x1F7) == 0x50)
{
outp(0x1F6, 0xA0);//读取ATAPI设备的命令
outp(0x1F7, 0xEC);//读取ATA设备的命令
while (inp (0x1F7) != 0x58);
for (i=0; i< 256; i++)
{
pw = inpw(0x1F0);
}
__result = S_OK;
}
*/
/*方法2
// wait controller ready
// 0x1F7 status register ( READ )
// bit:0=1 command execute error
// 1=1 index
// 2=1 error exist, but corrected by ECC
// 3=1 data request
// 4=1 seek end
// 5=1 write error
// 6=1 driver ready
// 7=1 busy
// while ((al = inp (0x1F7)) >= 0x80);//读取ATA设备的命令
while (((al = inp (0x1F7)) & 0x50) != 0x50);//读取ATA设备的命令
// if ((al & 0x50) == 0x50)
{
// select fixed disk 0 or 1
// 0x1F6 Sector size/Driver header select register (WRITE)
// bit:0-3 header select
// 4=0 first disk, 1 second disk
// 5-7 must be 101
outp(0x1F6, 0xA0);//读取ATAPI设备的命令
// 0x1F7 IDE command (WRITE)
// 0001xxxx header to track 0
// 001000LR sector read
// 001100LR sector write
// 0100000R read verify
// 01010000 format track
// 0111xxxx seek
// 10010000 diagnose
// 10010001 parameter set
// 11101100 read disk parameters (UNDOCUMENTED)
// NOTE: L = 0 : normal, normal ECC, L = 1 : long status
// R = 0 : error retry, R = 1 : no error retry
outp(0x1F7, 0xEC);//读取ATA设备的命令(read disk parameters)
}
while (((al = inp (0x1F7)) & 0x58) != 0x58);//读取ATA设备的命令
// while ((al = inp (0x1F7)) >= 0x80);//读取ATA设备的命令
// if ((al & 0x58) == 0x58)
{
for (i=0; i< 256; i++)
{
pw = inpw(0x1F0);
}
__result = S_OK;
}
*/
/*方法3
// while ((al = inp (0x1F7)) >= 0x80);//读取ATA设备的命令
// outp(0x1F6,0xA0);
while ((al = inp (0x1F7)) >= 0x80);//读取ATA设备的命令
if ((al & 0x50) == 0x50)
{
outp(0x1F6, 0xA0);//读取ATAPI设备的命令
outp(0x1F7, 0xEC);//读取ATA设备的命令
while ((al = inp (0x1F7)) >= 0x80);
if ((al & 0x58) == 0x58)
{
for (i=0; i< 256; i++)
{
pw = inpw(0x1F0);
}
}
}
*/
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