INT 21,12 - Search for Next Entry Using FCB

AH = 12h

DS:DX = pointer to unopened ~FCB~ returned from

~INT 21,11~ or ~INT 21,12~

on return:

AL = 00 if file found

= FF if file not found

- finds next matching file after calls to ~INT 21,11~ and

~INT 21,12~

- FCB should be the same across calls to INT 21,11 and 12

- after successful call ~DTA~ holds an unopened ~FCB~/~XFCB~ for

the requested file. Using any of the other FCB functions

destroys this DTA copy of the FCB/XFCB