RomWBW/Source/Images/d_bp/u15/UNERASE.MAC

; PROGRAM:  UNERASE for ZCPR3
; AUTHOR:  RICHARD CONN
; VERSION:  1.0
; DATE:  18 May 84
; DERIVATION:  UNERA 2.2 (25 July 83) for ZCPR2
; DERIVATION:  UNERA BY GENE COTTON
;
VERS	EQU	10		;version number
z3env	SET	0f400h

;
; PROGRAM TO RECOVER ERASED FILES, BY GENE COTTON
;
; From Interface Age December 1981 pg 146
;
; v2.0 - 07/23/83  Modified to be consistent in the ZCPR2 tool set.
;					- Rick Conn
; v1.0 - 05/18/84  Modified to be consistent in the ZCPR3 tool set.
;					- Rick Conn
;
; Contributors:
;	v1.6 - Dave Rand
;	v1.5 - Irv Hoff
;	v1.4 - Paul Traina
;	v1.3 - Irv Hoff
;	v1.2 - Charlie Strom
;	v1.1 - Bruce Blakeslee
; 	v1.0 - Retyped from Interface Age (Dec 81).  - Henry Rothberg
;

;
;  SYSLIB AND Z3LIB ROUTINES
;
	EXT	Z3INIT,CODEND
	EXT	PRINT,COUT,CRLF

;
; System equates:
;
BOOT	EQU	0000H		;CP/M WARM BOOT JUMP VECTOR
BDOS	EQU	BOOT+05H	;CP/M BDOS CALL JUMP VECTOR
TBUFF	EQU	BOOT+80H	;DISK I/O BUFFER
FCB	EQU	BOOT+5CH	;DEFAULT FILE CONTROL BLOCK
FCB2	EQU	BOOT+6CH	;SECONDARY FILE CONTROL AREA
CR	EQU	'M'-'@'		;CTL-M FOR CARRIAGE RETURN
LF	EQU	'J'-'@'		;CTL-J FOR LINE FEED
CTRLC	EQU	'C'-'@'		;ABORT

;
; Environment Definition
;
	if	z3env ne 0
;
; External ZCPR3 Environment Descriptor
;
	jmp	start
	db	'Z3ENV'	;This is a ZCPR3 Utility
	db	1	;External Environment Descriptor
z3eadr:
	dw	z3env
start:
	lhld	z3eadr	;pt to ZCPR3 environment
;
	else
;
; Internal ZCPR3 Environment Descriptor
;
	MACLIB	Z3BASE.LIB
	MACLIB	SYSENV.LIB
z3eadr:
	jmp	start
	SYSENV
start:
	lxi	h,z3eadr	;pt to ZCPR3 environment
	endif

;
; Start of Program -- Initialize ZCPR3 Environment
;
	call	z3init	;initialize the ZCPR3 Env and the VLIB Env
	LXI	H,0		;SAVE STACK PTR
	DAD	SP
	SHLD	STACK
	CALL	CODEND		;DETERMINE FREE SPACE
	SHLD	FNTAB		;SET PTR TO FILE NAME TABLE
	LXI	D,512		;1/2 K
	DAD	D
	SPHL			;NEW STACK
	CALL 	HELLO		;SIGN ON MESSAGE
	CALL	HELPCHK		;CHECK FOR AND PRINT HELP MESSAGE
	CALL	PCHECK		;CHECK PARAMETERS
	LDA	FNCOUNT		;NUMBER OF FILES SPECIFIED
	ORA	A		;0=NONE
	CNZ	TRYFIX		;DO THE RECOVERY
	CALL	BYE		;SIGN OFF MESSAGE
	JMP	BOOT		;RETURN TO CP/M
;
; ** Main Routines **
;

;
; SAY WHO WE ARE
;
HELLO:
	CALL	PRINT
	DB	'UNERASE  Version '
	DB	(VERS/10)+'0','.',(VERS MOD 10)+'0',0
	RET
;
; CHECK FOR VALID PARAMETERS AND SAY WHICH CP?M VERSION
;
PCHECK:
	CALL	OPTCHK		;CHECK FOR OPTIONS AND SET FLAGS
	CALL	FCBCHK		;MAKE SURE FILE SPECIFIED
	CALL	CPMCHK		;ESTABLISH CP/M PARAMETERS
	CALL	PUSCHK		;CHECK IF USER WANTS TO CHANGE DISK
	RET
;
; LOOK THROUGH DIRECTORY
;
TRYFIX:
	CALL	NXTSEC		;GET A DIRECTORY SECTOR
	RZ			;RETURNS ZERO FLAG IF NO MORE
	CALL	CHKENT		;CHECK IT OUT AND MAYBE FIX
	JMP	TRYFIX		;KEEP IT UP TILL DONE
;
; SIGN OFF AND RESET SYSTEM
;
BYE:
	MVI	C,13		;SYSTEM RESET
	CALL	BDOS
	LDA	LISTFL		;LIST ONLY?
	ORA	A		;0=NO
	JNZ	PRNF
	LDA	FIXCNT		;CHECK FOR ACTIVITY
	ORA	A
	JZ	PRNF		;SAY NONE FOUND
	CALL	PRINT
	DB	CR,LF,'File(s) Recovered - DOUBLE CHECK Before Using',0
	RET
PRNF:
	CALL	PRINT
	DB	CR,LF,'NO Files Recovered',0
	RET
;
; CHECKS FOR P AND 0 OPTIONS IN COMMAND LINE
;
OPTCHK:
	XRA	A	;TURN OFF FLAGS
	STA	CURUSR
	STA	PAUSE
	STA	FIXCNT
	STA	LISTFL
	STA	FNCOUNT	;NO FILE NAMES
	LXI	H,1	;SET SECTOR 1
	SHLD	SECTOR
	LXI	H,TBUFF	;SCAN THRU TBUFF, BUILDING A FILE NAME TABLE
	MOV	A,M	;GET CHAR COUNT
	INX	H	;PT TO FIRST CHAR
	PUSH	H	;SAVE PTR
	ADD	L	;PT TO AFTER LAST CHAR
	MOV	L,A
	MVI	M,0	;STORE ENDING ZERO
	LHLD	FNTAB	;PT TO TABLE
	XCHG		;... IN DE
	POP	H	;GET PTR TO FIRST CHAR
	CALL	SBLANK	;SKIP BLANKS
FNLOOP:
	PUSH	D	;SAVE TABLE PTR
	CALL	GETFN	;EXTRACT FILE NAME
	POP	D
	PUSH	H
	LXI	H,11	;PT TO NEXT TABLE ENTRY
	DAD	D
	XCHG
	POP	H
	LDA	FNCOUNT	;INCREMENT COUNT
	INR	A
	STA	FNCOUNT
	MOV	A,M	;GET TERMINATING CHAR
	INX	H	;PT TO NEXT
	CPI	','	;ANOTHER FOLLOWS?
	JZ	FNLOOP
	DCX	H	;POINT BACK TO DELIM
	CALL	SBLANK	;SKIP TO NON-BLANK
OPTCK1:
	MOV	A,M	;GET OPTION
	CALL	DELCHK	;DONE IF DELIM
	RZ
	CPI	'L'	;LIST ONLY?
	JZ	OPTCKL
	CPI	'P'	;PAUSE?
	JZ	OPTCKP
	CPI	'Z'	;USER 0?
	JZ	OPTCKZ
	CALL	PRINT
	DB	CR,LF,'Invalid Option -- ',0
	MOV	A,M
	CALL	COUT
	JMP	HCK1
OPTCKL:
	MVI	A,0FFH	;SET FLAG
	STA	LISTFL
	INX	H	;PT TO NEXT
	JMP	OPTCK1
OPTCKP:
	MVI	A,0FFH	;SET FLAG
	STA	PAUSE
	INX	H	;PT TO NEXT
	JMP	OPTCK1
OPTCKZ:
	MVI	A,0FFH	;SET FLAG
	STA	CURUSR
	INX	H
	JMP	OPTCK1
GETFN:
	PUSH	D	;FILL TARGET FCB
	MVI	B,11	;11 BYTES
	MVI	A,' '	;SPACE FILL
GETFN0:
	STAX	D	;PUT SPACE
	INX	D
	DCR	B
	JNZ	GETFN0
	POP	D	;PT TO ENTRY AGAIN
	CALL	SCANCOL	;SCAN FOR COLON
	MVI	B,8	;8 CHARS MAX
	CALL	GETFN1	;GET AND FILL ENTRY
	MOV	A,M	;GET CHAR
	CPI	'.'	;DELIM?
	RNZ		;DONE
	INX	H	;PT TO AFTER PERIOD
	MVI	B,3	;3 CHARS MAX AND DO IT AGAIN
GETFN1:
	MOV	A,M	;GET CHAR
	CPI	'.'	;END OF FIELD?
	JZ	GETFN3
	CALL	DELCHK	;CHECK DELIMITER
	RZ
	CPI	'*'	;WILD?
	JZ	GETFNQ
	STAX	D	;STORE CHAR
	INX	H	;PT TO NEXT
	INX	D
	DCR	B	;COUNT DOWN
	JNZ	GETFN1
GETFN2:
	MOV	A,M	;FLUSH CHARS TO DELIM
	CALL	DELCHK	;CHECK FOR DELIMITER
	RZ
	INX	H	;PT TO NEXT
	JMP	GETFN2
GETFN3:
	INX	D	;PT TO AFTER FIELD
	DCR	B	;COUNT DOWN
	JNZ	GETFN3
	RET
GETFNQ:
	MVI	A,'?'	;FILL WITH QUESTION MARKS
	STAX	D
	INX	D
	DCR	B
	JNZ	GETFNQ
	JMP	GETFN2	;SKIP TO DELIM
DELCHK:
	ORA	A	;END OF LINE?
	RZ
	CPI	'.'	;END OF FIELD?
	RZ
	CPI	','	;END OF ENTRY?
	RZ
	CPI	' '
	RET
SBLANK:
	MOV	A,M	;SKIP TO NON-BLANK
	CPI	' '
	RNZ
	INX	H
	JMP	SBLANK
SCANCOL:
	PUSH	D	;SAVE TABLE PTR
	PUSH	H	;SAVE PTR
SCOL1:
	MOV	A,M	;GET CHAR
	INX	H	;PT TO NEXT
	CPI	':'	;COLON?
	JZ	SCOLX
	CALL	DELCHK	;CHECK FOR DELIMITER
	JNZ	SCOL1
SCOL2:
	POP	H	;RESTORE
	POP	D
	RET
SCOLX:
	XCHG		;DE PTS TO AFTER COLON
	POP	H	;GET OLD PTR
	XCHG		;REPLACE IT
	POP	D	;GET TABLE PTR
	RET
;
; CHECKS THE CURRENT 4 DIRECTORY ENTRIES AGAINST ARGUMENT
; IF MATCH, REWRITES SECTOR WITH REACTIVATED 1ST BYTES
;
CHKENT:
	XRA	A		;ASSUME NO REWRITE
	STA	REWRT
	MVI	B,4		;NUMBER OF ENTRIES PER SECTOR
	LXI 	H,TBUFF		;BEGINNING OF BUFFER
CKLUP:
	PUSH	B
	MOV	A,M
	CPI	0E5H		;CHECK FOR UNUSED
	JNZ	CKINC
	PUSH	H
	LHLD	FNTAB		;PT TO POTENTIAL FILES
	XCHG
	POP	H
	LDA	FNCOUNT		;NUMBER OF ENTRIES TO COUNT
	MOV	B,A		;... IN B
CKLUP0:
	PUSH 	H		;SAVE BEGINNING ADDRESS
	PUSH	D		;SAVE PTR
	PUSH	B		;SET NAME COUNT
	CALL	COMPAR		;COMPARE WITH ARGUMENT
	POP	B		;GET NAME COUNT
	POP	D		;GET PTR
	POP	H
	JZ	CKLUP1		;MATCH!
	PUSH	H		;SAVE PTR
	LXI	H,11		;PT TO NEXT ENTRY
	DAD	D
	XCHG
	POP	H
	DCR	B		;COUNT DOWN
	JNZ	CKLUP0
	JMP	CKINC
CKLUP1:
	LDA	LISTFL		;LIST ONLY?
	ORA	A		;0=NO
	JNZ	CKINC
	MVI	M,0		;SET USER 0
	LDA	CURUSR		;CHECK FOR CURRENT USER
	CPI	0FFH
	JZ	CKLUP2
	PUSH	H		;SAVE HL
	MVI	E,0FFH		;GET USER VALUE
	MVI	C,32		;GET USER AREA FUNCTION
	CALL	BDOS		;BDOS RETURNS CURRENT AREA IN 'A' REG.
	POP	H		;RESTORE HL
	MOV	M,A		;POKE IN CURRENT USER AREA
CKLUP2:
	MVI	A,0FH		;SAY NEED REWRITE
	STA	REWRT
	MVI	A,0FFH		;SET COUNT FLAG
	STA	FIXCNT
CKINC:
	POP	B
	LXI	D,32		;LENGTH OF ENTRY
	DAD	D
	DCR	B
	JNZ	CKLUP
	LDA	REWRT		;SEE IF NEED REWRITE
	ORA	A
	JZ	CKDONE		;NO - DONE
;
; WRITE THE DIRECTORY SECTOR BACK TO THE DISK
;
	LHLD	TRACK		;SET TRACK
	MOV	C,L
	MOV	B,H
	CALL	SETTRK
	LHLD	SECTOR		;SET SECTOR
	MOV	B,H
	MOV	C,L
	CALL	TRNSLT
	CALL 	SETSEC
	CALL	WRITE		;WRITE THE SECTOR BACK
	ORA	A
	JNZ	ERRWRT		;ABORT IF ERROR
CKDONE:
	LHLD	DIRMAX
	DCX	H		;REDUCE SECTORS LEFT
	SHLD	DIRMAX
	LHLD	SECTOR		;POINT TO NEXT SECTOR
	INX	H
	SHLD	SECTOR
	XCHG
	LHLD	MAXSEC		;REACHED LIMIT?
	INX	H		;ONE MORE
	MOV	A,H		;CHECK HIGH
	CMP	D
	RNZ
	MOV	A,L		;CHECK LOW
	CMP	E
	RNZ
	LHLD	TRACK		;NEXT TRACK
	INX	H
	SHLD	TRACK
	LXI	H,1		;FIRST SECTOR OF NEXT TRACK
	SHLD	SECTOR
	RET
;
; COMPARE 11 BYTES OF DIRECTORY ENTRY AGAINST ARGUMENT
;
COMPAR:
	SHLD	TEMP		;Hold pointer in case of match
	INX	H
	XCHG
	MVI	C,11
CMPR1:
	LDAX	D		;GET DIRECTORY ENTRY CHARACTER
	ANI	7FH		;STRIP ANY FLAGS
	CMP	M
	JNZ	CMPCKAM
CMPR2:
	INX	D
	INX	H		;BUMP TO NEXT CHARACTER
	DCR	C
	JNZ	CMPR1		;LOOP FOR 11 CHARACTERS
	LDA	FIXCNT		;CHECK FLAG
	ORA	A		;0=FIRST TIME
	CZ	PRFIX
	LHLD	TEMP
	CALL	PRINTFCB
	XRA	A
	RET			;RETURNS 'ZERO' FLAG SET FOR MATCH
PRFIX:
	LDA	LISTFL	;LIST ONLY?
	ORA	A	;0=NO
	JNZ	PRFIX1
	CALL	PRINT
	DB	CR,LF,'File(s) Recovered --',0
	RET
PRFIX1:
	MVI	A,0FFH	;DON'T PRINT THIS AGAIN
	STA	FIXCNT
	CALL	PRINT
	DB	CR,LF,'Erased File(s) --',0
	RET
CMPCKAM:
	LDAX	D
	CPI	0E5H		;NON-ALLOCATED ENTRY?
	JZ	SKIP
	MOV	A,M
	CPI	'?'
	RNZ
	JMP	CMPR2
SKIP:
	ORA	A
	RET			;SET NZ FLAG
;
; CHECK FOR CP/M VERSION AND SET THINGS
;
CPMCHK:
	LXI	D,80H		;SET DMA TO TBUFF
	MVI	C,26
	CALL	BDOS
	CALL	CPM22		;IF 2.2 GO SET THINGS
	CALL	GTBIOS		;ESTABLISH BIOS JUMP VECTOR
;
; SELECT DISK AND SETUP DISK PARAMETER HEADER
;
	LDA	FCB		;GET THE DISK
	MOV	E,A
	MVI	C,14
	CALL	BDOS
	LDA	FCB
	MOV	C,A
	MVI	B,0
	CALL	SELDSK		;MAKE SURE DRIVE IS
	MOV	A,H		;  SELECTED
	ORA	L
	JZ	ILDISK
	MOV	E,M		;GET THE ADDRESS
	INX	H		;  OF THE XLTO
	MOV	D,M	
	XCHG
	SHLD	DPH		;SAVE THE ADDRESS
	RET
;
; DETERMINE NUMBER OF DIRECTORY ENTRIES
;
CPM22:
	MVI	C,31		;GET DISK PARAMETERS ADDRESS
	CALL	BDOS		;DPB ADDRESS IN 'HL' ON RETURN
	MOV	E,M		;NUMBER OF SECTORS/TRACK
	INX	H		;AS 2-BYTE QUANTITY IN DE
	MOV	D,M
	INX	H
	XCHG
	SHLD	MAXSEC		;SET MAX SECTORS/TRACK
	XCHG
	INX	H
	INX	H
	MOV	A,M		;GET EXM
	STA	EXTENT
	INX	H		;PT TO DRM
	INX	H
	INX	H
	MOV	E,M		;GET NUMBER OF
	INX	H		;  DIRECTORY ENTRIES
	MOV	D,M
	XCHG
	INX	H		;ACCOUNT FOR - 1
	CALL	SHFHL2		;SHIFT 'HL' RIGHT 2
	SHLD	DIRMAX		;SAVE NUMBER DIRECTORY SECTORS
	LXI	H,5		;NOW POINT TO SYSTEM
	DAD	D		;  TRACK OFFSET
	MOV	A,M		;PICK UP NUMBER OF
	INX	H
	MOV	H,M
	MOV	L,A
	SHLD	TRACK
	RET
;
; ERROR OCCURED DURING DISK WRITE - ABORT
;
ERRWRT:
	CALL	PRINT
	DB	CR,LF,'ABORT - Error During Disk Write',0
	JMP	BOOT		;ABORT
;
; MAKE SURE A LEGAL DISK IS SPECIFIED AND CHECK FOR HELP
;
FCBCHK:
	LDA	FCB		;GET DRIVE SPECIFICATION
	ORA 	A		;SEE IF DEFAULT
	JNZ	FCBCK1		;NO, GO CHECK FILENAME
	MVI	C,25		;ASK FOR CURRENT DRIVE
	CALL	BDOS
	INR	A		;OFFSET FOR NEXT INSTRUCTION
FCBCK1:
	DCR	A		;CURRENT DRIVE NUMBER
	STA	FCB		;SAVE IT
	RET
;
;  CHECK FOR HELP REQUEST
;
HELPCHK:
	LDA	FCB+1		;GET 1ST BYTE OF FILENAME
	CPI	'/'		;HELP?
	JZ	HCK1
	CPI	' '		;MAKE SURE IT IS NON-BLANK
	RNZ			;OK - KEEP GOING
;	
; IF NO FILE NAME IS SPECIFIED, ABORT WITH NOTICE
;
HCK1:
	CALL 	PRINT
	db	cr,lf,'Syntax:'
	DB	CR,LF,'   UNERASE afn,afn,afn,... o'
	db	cr,lf,'Options:'
	DB	CR,LF,'   L - List Erased Files Only'
	DB	CR,LF,'   P - Pause for disk change'
	DB	CR,LF,'   Z - Place file in User 0 '
	DB	'(default is current)'
	DB	0
CLEANRET:
	LHLD	STACK		;QUIET RETURN
	SPHL
	RET
;
; GET BIOS JUMPS VECTORS FOR EASY REFERENCE
;
GTBIOS:
	LHLD	BOOT+1		;POINTS TO BIOS JUMP TABLE+3
	LXI	D,WBOOT		;WHERE WE WILL KEEP A COPY
	MVI	B,16*3		;MOVE 48 BYTES AND FALL THRU TO MOVE
;
; GENERAL PURPOSE MOVE ROUTINE
; FROM 'HL' TO 'DE' FOR COUNT OF 8
;
MOVE:
	MOV	A,M		;GET A BYTE
	STAX	D		;PUT A BYTE
	INX	D		;INCREMENT TO NEXT
	INX	H
	DCR	B		;COUNT DOWN
	JNZ	MOVE
	RET
;
;SPECIFIED AN ILLEGAL DISK DRIVE - ABORT
;
ILDISK:
	CALL	PRINT
	DB	CR,LF,'ABORT - Illegal Disk Requested',0
	JMP	BOOT		;ABORT
;
; READS NEXT SECTOR (GROUP OF FOUR DIRECTORY ENTRIES)
; RETURNS WITH ZERO FLAG SET IF NO MORE
;
NXTSEC:
	LHLD	DIRMAX		;SEE IF MORE SECTORS
	MOV	A,H
	ORA	L
	RZ			;RETURNS ZERO FLAG IF NO MORE
	LHLD	TRACK		;SET TRACK
	MOV	C,L
	MOV	B,H
	CALL	SETTRK
	LHLD	SECTOR		;SET SECTOR
	MOV	B,H
	MOV	C,L
	CALL	TRNSLT
	CALL	SETSEC
	CALL	READ		;READ A SECTOR
	ANI	1		;REVERSE SENSE OF ERROR FLAG
	XRI	1		;RETURNS WITH ZERO FLAG SET
	RET			;IF BAD READ
;
; FCB PRINTING ROUTINE
;
PRINTFCB:
	PUSH	H
	LXI	D,1+8+3
	DAD	D
	LDA	EXTENT		;GET EXTENT MASK
	CMP	M		;COMPARE TO TARGET
	POP	H
	RC			;PRINT ONLY FIRST EXTENT
	CALL	PRINT		;NEW LINE WITH 2 LEADING SPACES
	DB	CR,LF,'  ',0
	INX	H
	MVI	B,8
	CALL	PR1
	MVI	A,'.'
	CALL	COUT
	MVI	B,3
PR1:
	MOV	A,M
	ANI	7FH
	CPI	' '		;Check for blanks
	CNZ	COUT
	INX	H
	DCR	B
	JNZ	PR1	
	RET
;
; DOES USER WANT TO PAUSE TO CHANGE DISKS OR SELECT USER 0?
;
PUSCHK:
	LDA	PAUSE		;GET OPTION
	ORA	A
	RZ			;NOPE, SO RETURN
	CALL	PRINT		;PRINT PAUSE MESSAGE
	DB	CR,LF,'Change Disk - Hit ^C to Abort, Anything Else to Cont - '
	DB	0
	MVI	C,01
	CALL	BDOS		;INPUT A CHAR
	CPI	CTRLC		;ABORT?
	JZ	CLEANRET
	CALL	CRLF
	MVI	C,0DH
	JMP	BDOS		;RESET THE DISK
;
; SHIFT REGS 'HL' RIGHT 2 BITS LOGICAL
;
SHFHL2:
	CALL	SHFHL		;ROTATE RIGHT 1 BIT AND FALL THRU
SHFHL:
	XRA	A		;CLEAR CARRY
	MOV	A,H
	RAR			;SHIFTED BIT IN CARRY
	MOV	H,A
	MOV	A,L
	RAR
	MOV	L,A
	RET
;
; TRANSLATE REG 'BC' FROM LOGICAL TO PHYSICAL SECTOR NUMBER
;
TRNSLT:
	LHLD	DPH		;GET ADDRESS OF XLTO
	XCHG
	CALL	SECTRAN		;USE BIOS ROUTINE
	MOV	C,L		;RETURN VALUE IN BC
	MOV	B,H
	RET
;
; THIS IS THE WORKING COPY OF THE BIOS JUMP TABLE
;
WBOOT:	 DS	3
CONST:	 DS	3
CONIN:	 DS	3
CONOUT:	 DS	3
LIST:	 DS	3
PUNCH:	 DS	3
READER:	 DS	3
HOME:	 DS	3
SELDSK:	 DS	3
SETTRK:	 DS	3
SETSEC:	 DS	3
SETDMA:	 DS  	3
READ:	 DS	3
WRITE:	 DS	3
LISTST:	 DS	3
SECTRAN: DS	3
;
STACK:
	DS	2		;LOCATION OF STACK
;
; DATA AREAS
;
FNCOUNT:
	DS	1		;NUMBER OF FILE NAMES IN COMMAND LINE
CURUSR:	DS	1		;0 IF NOT IN CURRENT USER
PAUSE:	DS	1		;0 IF NO PAUSE FOR DISK CHANGE
LISTFL:	DS	1		;0 IF NOT LIST ONLY
DIRMAX:	DS	2		;NUMBER OF SECTORS IN DIRECTORY =
;				;   MAXIMUM NUMBER OF DIRECTORY ENTRIES
;				;   DIVIDED BY 4 (ENTRIES PER SECTOR)
TEMP:	DS	2		;TEMP STORAGE FOR FCB PRINT
EXTENT:	DS	1		;EXTENT MASK
MAXSEC:	DS	2		;MAXIMUM NUMBER OF SECTORS/TRACK
FIXCNT:	DS	1		;CHANGE FLAG
REWRT:	DS	1		;REWRITE FLAG  0=NO, F=YES
SECTOR:	DS	2		;CURRENT SECTOR NUMBER
TRACK:	DS	2		;TRACK NUMBER OF DIRECTORY
;
;    ADDRESS OF THE TRANSLATE TABLE
;
DPH: 	DS	16

FNTAB:	DS	2		;FILE NAME BUFFER

	END