; diskbuf needs to be defined

; User-accessible part of FCB (12 bytes)
fcb_drv:   equ 0  ; 1 byte, 1=A: 2=B: 3=C:
fcb_fn:    equ 1  ; 8 bytes
fcb_ext:   equ 9  ; 3 bytes

fcb_type:  equ 12 ; BYTE type identifier