; preserves all registers
; ebx = segment
; esi = offset filename
WRITEFILENAME	     PROC 

; this macro clears a sector for creating a subdir sector
; eax = sector
; ebx = segment
CLEARSECTOR	     PROC 

; eax = segment
LOADMBR	     PROC 

; eax = segment
LOADPARTITION	     PROC 
READPARTITION	     PROC 

WRITEDISKPARAMS	     PROC 

GETFLOPPYPARAMS	     PROC 
LOADBOOTSECTOR	     PROC 
GETDRIVE	     PROC 

; entry = nothing
LOADDRIVES	     PROC 

SETDRIVE	     PROC 
STRTOFILENAME	     PROC 

; usage 
; call     clustertosector	ebx
CLUSTERTOSECTOR	     PROC 
ISDIRENTRY	     PROC 
SHOWSEGMENT	     MACRO 	SEGMENT

CLEARDIRSECTOR	     MACRO 	SEGMENT,DRIVE,HEAD,SECTOR
CHS2LBA	     MACRO 	CYLINDER,HEAD,SECTOR,HEADPERCYLINDER,SECTORPERHEAD
LBA2CHS	     MACRO 	SECTOR,SECTPERHEAD,HEADPERCYLINDER

GETCHS	     MACRO 
COMPAREEXT	     MACRO 	FILENAME,TEXT
ISTEXT	     MACRO 	FILENAME