ATA PIO Mode: Difference between revisions

===Detecting device types===

(Using a Software Reset -- adapted from PypeClicker)

/* on Primary bus: ctrl->base =0x1F0, ctrl->dev_ctl =0x3F6. REG_CYL_LO=4, REG_CYL_HI=5, REG_DEVSEL=6 */

int detect_devtype (int slavebit, struct DEVICE *ctrl)

return ATADEV_UNKNOWN;

}

 

===ATA Driver===

(Note: the following routines should all include some form of OS-specific timeout.)

 

; do a singletasking PIO ATA read

; inputs: ebx = # of sectors to read, edi -> dest buffer, esi -> driverdata struct, ebp = 4b LBA

pop eax

ret

 

==Comments==

ATA Execute Drive Diagnostic command (0x90) may not work right in Bochs.