add option to send ATAPI command using 32-bit PIO, add menu option to toggle that.
add option to send ATAPI command using 32-bit PIO, add menu option to
toggle that.

joncampbell123/doslib,joncampbell123/doslib,joncampbell123/doslib,joncampbell123/doslib,joncampbell123/doslib,joncampbell123/doslib