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Hi,
Reposting it the message as i did in reply to wrong message.
Why isn't the DRQ is not being set to 1 ?
If there is some error in the below code please do mention how to
correct it . The functions printf,inb,outb are working.
Any other corrections to be made to just read the 1st or 2nd byte ?
Here is code.
static inline void insw(unsigned short port, unsigned char *addr,
unsigned long count)
{
__asm__ __volatile__("rep; ins" "w":"=D"(addr),
"=c"(count):"d"(port), "0"(addr),
"1"(count));}
void hd_init(void)
{
unsigned char *p, c[512], *e;
e = c;
while ((inb(0x1f7) & 0x80) == 0x80) ;
printf("HERE 1\n");
outb(0x1f2, 0x04);
outb(0x1f3, 0x07);
outb(0x1f4, 0xa7);
outb(0x1f5, 0x00);
outb(0x1f6, 0xa3);
outb(0x1f7, 0x20);
printf("%x", inb(0x1f7));
/* Prints 0x50 . So the below loops forever.
*/
while ((inb(0x1f7) & 0x80) == 0x80
|| (inb(0x1f7) & 0x08) != 0x08) ;
/* Doesn't break out of this loop. Something wrong here.
* But as per the hardware spec this is what is expected.
* Corrections to be made in this loop.
*/
printf("HERE 2\n");
insw(0x1f0, e, 256);
printf("%x %x #####\n", c[0], e[0]);
}
--
