cdx/cd_dos.a80

; LAST UPDATE: 29.06.2025 savelij

PAGE0	EQU	0x82	;WIN 0x0000-0x3FFF
PAGE1	EQU	0xA2	;WIN 0x4000-0x7FFF
PAGE2	EQU	0xC2	;WIN 0x8000-0xBFFF
PAGE3	EQU	0xE2	;WIN 0xC000-0xFFFF

ADRDIR	EQU	0xC000

DIRPAGE	EQU	0

DAY	EQU	19
MONTH	EQU	05
YEAR	EQU	2002

NAM	EQU	0
EXT	EQU	8
ATR	EQU	11

CLU3	EQU	20
CLU4	EQU	21

TIM1	EQU	22
TIM2	EQU	23
DAT1	EQU	24
DAT2	EQU	25
CLU1	EQU	26
CLU2	EQU	27
LEN1	EQU	28
LEN2	EQU	29
LEN3	EQU	30
LEN4	EQU	31
POS1	EQU	32
POS2	EQU	33
POS3	EQU	34
POS4	EQU	35
DIRCLU1	EQU	36
DIRCLU2	EQU	37
HND1	EQU	38
HND2	EQU	39
FDRV	EQU	40
AMODE	EQU	41
FTASK	EQU	42

;ACCESS	MODE:
;	00 - READ/WRITE
;	01 - READ
;	02 - WRITE

;File Manipulator (FM)
FM_BUF	DB	".       "	;+00 NAME
	DB	"   "		;+08 EXT
	DB	0x10		;+11 ATTRIBUT
	DB	0,0,0,0,0,0,0,0,0,0 ;+12 RESERVED
	DW	0x0000		;+22 TIME
	DW	0x0000		;+24 DATE
	DW	0x0000		;+26 START CLUSTER
	DW	0x0000,0x0000	;+28 SIZE FILE
	DW	0x0000,0x0000	;+32 FILE POSITION (FP)
	DW	0x0000		;+36 DIRECTORY CLUSTER
	DW	0x0000		;+38 HANDLE NUMBER
	DB	0x00		;+40 DRIVE OR CURRENT
	DB	0x00		;+41 ACCESS MODE
	DB	0x00		;+42 TASK
	DB	0x00		;+43 EMPTY
END_FM
;End of	FM
;	DS	44*2

FM_SIZE	EQU	END_FM-FM_BUF

SET_FM	PUSH	DE
	INC	A
	LD	IY,FM_BUF-FM_SIZE
	LD	DE,FM_SIZE
SET_FM1	ADD	IY,DE
	DEC	A
	JR	NZ,SET_FM1
	POP	DE
	LD	A,(IY+0)
	OR	A
	LD	A,0
	RET	NZ
	LD	A,5
	SCF 
	RET 

; HL:IX	- OFFSET POINTER
;     A	- FILE MANIPULATOR

MOVE_FP	CALL	SET_FM
	RET	C
	INC	B
	DEC	B
	JP	Z,MOVE_FA
	DEC	B
	JP	Z,MOVE_FB
	DEC	B
	JP	Z,MOVE_FC
	LD	A,1
	SCF 
	RET 

;from Start File
MOVE_FA	LD	BC,0
	LD	DE,0
	JR	MOVE_F1

;from End File
MOVE_FC	LD	C,(IY+28)
	LD	B,(IY+29)
	LD	E,(IY+30)
	LD	D,(IY+31)
	JR	MOVE_F1

;from Current Position
MOVE_FB	LD	C,(IY+32)
	LD	B,(IY+33)
	LD	E,(IY+34)
	LD	D,(IY+35)
MOVE_F1	ADD	IX,BC
	ADC	HL,DE
	LD	D,IXH
	LD	E,IXL
	LD	(IY+32),E
	LD	(IY+33),D
	LD	(IY+34),L
	LD	(IY+35),H
	XOR	A
	RET 

;FP COMPARE
; CY - FILE POINTER > SIZE
; NC - FILE POINTER < SIZE

MOVE_CP	LD	L,(IY+28)
	LD	H,(IY+29)
	LD	E,(IY+32)
	LD	D,(IY+33)
	AND	A
	SBC	HL,DE
	LD	L,(IY+30)
	LD	H,(IY+31)
	LD	E,(IY+34)
	LD	D,(IY+35)
	SBC	HL,DE
	RET 

CHANGEDISK:	LD	A,(CDDRIVE)
;		LD	C,BIOS.DRV_RESET
;		RST	ToBIOS
	SPBIOS BIOSF.DRV_RESET
		JR	NC,.cont
		;
		CP	ERR_DRV.ATAPI_UnitAttention;BIOS.Error.ATAPI.UnitAttention
		JR	Z,.drv_change
		;
		CP	ERR_DRV.ATAPI_NotReady;BIOS.Error.ATAPI.NotReady
		SCF 
		RET	NZ
		LD	A,ERR_DSS.NOT_READY;DSS_Error.sys.NOT_READY
		RET 		
		;
.drv_change:	LD	A,(CDDRIVE)
		CALL	SAVE_MEDIA_CHANGED
		;
.cont:		CALL	INITDISK
		RET	C
		AND	A
		RET 

; NDISK11	CP	BIOS.Error.ATAPI.NotReady
; 	SCF 
; 	RET	NZ
; 	;
; 	LD	A,DSS_Error.sys.NOT_READY
; 	RET 

INITDISK:
	LD	A,DIRPAGE
	CALL	BANK
	PUSH	AF
	LD	B,4
CD_I_LP	PUSH	BC
	LD	DE,ADRDIR
	LD	A,(CDDRIVE)
	LD	HL,0x0000
	LD	IX,0x0010
;	LD	BC,1*256 + BIOS.DRV_READ
;	RST	ToBIOS
	SPBIOS BIOSF.DRV_READ,1
	POP	BC
	JR	NC,CD_I_OK
	DJNZ	CD_I_LP
UNKCD	POP	AF
	OUT	(PAGE3),A
	LD	A,ERR_DSS.UNKNOWN_FORMAT;DSS_Error.sys.UNKNOWN_FORMAT
	SCF
	RET

CD_I_OK	LD	HL,ADRDIR
	LD	A,(HL)
	INC	HL
	CP	0x01
	JR	NZ,UNKCD
	LD	A,(HL)
	INC	HL
	CP	"C"
	JR	NZ,UNKCD
	LD	A,(HL)
	INC	HL
	CP	"D"
	JR	NZ,UNKCD
	LD	HL,ADRDIR+0x009E
	LD	DE,ROOTDIR
	LDI 
	LDI 
	LDI 
	LDI 
	LD	HL,ADRDIR+0x00A6
	LD	DE,ROOTLEN
	LDI 
	LDI 
	LDI 
	LDI 
	POP	AF
	OUT	(PAGE3),A
;	LD	HL,0
;	LD	(FATCASH),HL
	XOR	A
	RET 


;----------------------------------------------

OPEN	LD	(ACCESS),A
	CALL	GETWORD
	RET	C
	LD	HL,TMPNAME
	LD	DE,MASKARE
	CALL	MASK
	RET	C
OPENEXE	CALL	SEARCH
	RET	C
	LD	A,1	;;
	CALL	SET_FM	;;	CALL	GET_FM
	RET	C
	LD	A,C
	EX	AF,AF'
	EXX 
	LD	(IY+HND1),E
	LD	(IY+HND2),D
	EXX 
	LD	D,IYH
	LD	E,IYL
	LD	HL,HANDBUF
	LD	BC,0x0020
	LDIR 
	LD	A,(ACCESS)
	LD	(IY+AMODE),A
;;	LD	A,(TASK)
	XOR	A	;;
	LD	(IY+FTASK),A
	XOR	A
	LD	(IY+POS1),A
	LD	(IY+POS2),A
	LD	(IY+POS3),A
	LD	(IY+POS4),A
;;	LD	A,(DRIVE)
;	XOR	A	;;
;	LD	(IY+FDRV),A
	LD	HL,FM_BUF+CLU1
	LD	E,(HL)
	INC	HL
	LD	D,(HL)
	LD	(IY+DIRCLU1),E
	LD	(IY+DIRCLU2),D

	LD	C,(IY+CLU1)
	LD	B,(IY+CLU2)
	LD	E,(IY+CLU3)
	LD	D,(IY+CLU4)
	EX	DE,HL
	PUSH	BC
	POP	IX
	LD	C,(IY+LEN1)
	LD	B,(IY+LEN2)
	LD	E,(IY+LEN3)
	LD	D,(IY+LEN4)
	EX	AF,AF'
	AND	A
	RET 

;RET
; HL:IX - SECTOR
; DE:BC - SIZE IN BYTES

;PATH0	DEFW	0x0000

ACCESS	DEFB	0x00

HANDBUF	DEFB	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
	DEFB	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0


WRT_HND	LD	A,DIRPAGE
	CALL	BANK
	PUSH	AF
	LD	IX,ADRDIR
	EXX 
	LD	DE,0
	EXX 
WRT_HN1	LD	A,(IX+00)
	OR	A
	JR	Z,WRT_HN2
	CP	0xE5
	JR	Z,WRT_HN2
	LD	BC,0x0020
	ADD	IX,BC
	JR	NC,WRT_HN1
	POP	AF
	OUT	(PAGE3),A
	LD	A,9
	SCF 
	RET 

WRT_HN2	LD	D,IXH
	LD	E,IXL
	LD	HL,HANDBUF
	LD	BC,0x0020
	LDIR 
	POP	AF
	OUT	(PAGE3),A
	LD	HL,ADRDIR
	LD	BC,(DIRSIZE)
	DEC	BC
	ADD	HL,BC
	AND	A
	SBC	HL,DE
	RET	NC
	LD	HL,(DIRSIZE)
	LD	BC,0x0020
	ADD	HL,BC
	LD	(DIRSIZE),HL
	AND	A
	RET 

GETNAME	LD	BC,0x08FF
GETN1	LD	A,(HL)
	CP	" "
	JR	NZ,GETN3
GETN2	INC	HL
	DJNZ	GETN2
	JR	GETN4
GETN3	LDI 
	DJNZ	GETN1
GETN4	LD	A,(HL)
	CP	" "
	LD	A,"."
	JR	NZ,GETN5
	LD	A,0x00
GETN5	LD	(DE),A
	INC	DE
	RET	Z
	LD	B,0x03
GETN6	LD	A,(HL)
	CP	" "
	RET	Z
	LDI 
	XOR	A
	LD	(DE),A
	DJNZ	GETN6
	RET 

DTABUF	DEFW	0x0000
CURHND	DEFW	0x0000
NO_NEXT	DEFB	0x00
FNDMODE	DEFB	0x00

F_FIRST	LD	(ACCESS),A
	LD	(DTABUF),DE
	LD	A,B
	LD	(FNDMODE),A
	PUSH	HL
	CALL	LOADDIR
	POP	HL
	CALL	GETWORD
	RET	C
	LD	HL,TMPNAME
	LD	DE,MASKARE
	CALL	MASK
	RET	C
	LD	A,(ACCESS)
	CALL	ASEARCH
	RET	C
	LD	HL,MASKARE
	LD	DE,(DTABUF)
	LD	BC,11
	LDIR 
	LD	A,(ACCESS)
	LD	(DE),A
	INC	DE
FIND_S	LD	BC,0x0020
	ADD	IX,BC
	LD	(CURHND),IX
	LD	HL,HANDBUF+12
	LD	BC,20
	LDIR 
	LD	A,(HANDBUF+11)
	LD	(DE),A
	INC	DE
	LD	HL,HANDBUF
	LD	A,(FNDMODE)
	OR	A
	JR	NZ,FIND_M2
	LD	BC,11
	LDIR 
	LD	A,0xFF
	LD	(NO_NEXT),A
	XOR	A
	RET 
FIND_M2	CALL	GETNAME
	LD	A,0xFF
	LD	(NO_NEXT),A
	XOR	A
	RET 

F_NEXT	LD	A,(NO_NEXT)
	OR	A
	LD	A,14
	SCF 
	RET	Z
	LD	(DTABUF),DE
	LD	DE,MASKARE
	LD	HL,(DTABUF)
	LD	BC,11
	LDIR 
	LD	A,(HL)
	PUSH	HL
	CALL	NSEARCH
	POP	DE
	EX	AF,AF'
	XOR	A
	LD	(NO_NEXT),A
	EX	AF,AF'
	RET	C
	INC	DE
	JP	FIND_S

NSEARCH	EX	AF,AF'
	LD	A,DIRPAGE
	CALL	BANK
	PUSH	AF
	EX	AF,AF'
	CPL 
	LD	C,A
	LD	IX,(CURHND)
	EXX 
	LD	DE,0
	EXX 
	JP	SEARCH1

DSEARCH	LD	A,0x10
	CALL	ASEARCH
	RET	NC
	LD	A,4
	RET 

SEARCH	LD	A,0x23
ASEARCH	EX	AF,AF'
	LD	A,DIRPAGE
	CALL	BANK
	PUSH	AF
	EX	AF,AF'
	CPL 
	LD	C,A
	LD	IX,ADRDIR
	EXX 
	LD	DE,0
	EXX 
SEARCH1	LD	A,(IX+00)
	OR	A
	JR	Z,SEARCH4
	CP	0xE5
	JR	Z,SEARCH3
	LD	A,(IX+11)
	AND	C
	JR	NZ,SEARCH3
	LD	HL,MASKARE
	LD	D,IXH
	LD	E,IXL
	LD	B,11
	EX	DE,HL
SEARCH2	LD	A,(DE)
	CP	"?"
	JR	Z,SEARCH5
	CP	(HL)
	JR	NZ,SEARCH3
SEARCH5	INC	HL
	INC	DE
	DJNZ	SEARCH2
	LD	D,IXH
	LD	E,IXL
	LD	HL,HANDBUF
	EX	DE,HL
	LD	BC,0x0020
	LDIR 
	POP	AF
	OUT	(PAGE3),A
	AND	A
	RET 

SEARCH3	EXX 
	INC	DE
	EXX 
	LD	DE,0x0020
	ADD	IX,DE
	JR	NC,SEARCH1
SEARCH4	POP	AF
	OUT	(PAGE3),A
	LD	A,3
	SCF 
	RET 

GETWORD	LD	DE,TMPNAME
	LD	BC,0x0DFF
GETWRD1	LD	A,(HL)
	INC	HL
	CP	'\\'
	JR	Z,DIRNAME
	CP	":"
	JR	Z,DRVNAME
	LD	(DE),A
	INC	DE
	CP	0x21
	CCF 
	RET	NC
	DJNZ	GETWRD1
	LD	A,16
	SCF 
	RET 

DIRNAME	LD	A,0x00
	LD	(DE),A
	PUSH	HL
	LD	HL,TMPNAME
	CALL	OPENDIR
	POP	HL
	JP	NC,GETWORD
	RET 

DRVNAME	LD	A,(TMPNAME)
	CP	"a"
	JR	C,DRVN2
	CP	"{"
	JR	NC,DRVN2
	SUB	0x20
DRVN2	SUB	"A"
	PUSH	HL
;	CALL	OPENDSK
	POP	HL
	JP	NC,GETWORD
	RET 

TMPNAME	DB	"            ",0x00

OPENDIR	XOR	A
	CALL	SET_FM
	LD	A,(HL)
	OR	A
	JP	NZ,SUBDIR

	LD	DE,(ROOTDIR+0)
	LD	(IY+CLU1),E
	LD	(IY+CLU2),D
	LD	DE,(ROOTDIR+2)
	LD	(IY+CLU3),E
	LD	(IY+CLU4),D

	LD	DE,(ROOTLEN+0)
	LD	(IY+LEN1),E
	LD	(IY+LEN2),D
	LD	DE,(ROOTLEN+2)
	LD	(IY+LEN3),E
	LD	(IY+LEN4),D

	CALL	LOADDIR
	LD	HL,DIRSPEC
	LD	(HL),'\\'
	INC	HL
	LD	(HL),0x00
	AND	A
	RET 

SUBDIR	CP	"."
	JR	NZ,SUBDIR2
	EXX 
	LD	HL,MASKARE
	LD	DE,MASKARE+1
	LD	BC,10
	LD	(HL),0x20
	LDIR 
	EXX 
	LD	DE,MASKARE
SUBDIR0	LDI 
	LD	A,(HL)
	OR	A
	JR	NZ,SUBDIR0
	JR	SUBDIR3

SUBDIR2	LD	DE,MASKARE
	CALL	MASK
	RET	C
SUBDIR3	CALL	FINDDIR
	RET	C
	LD	(IY+CLU1),E
	LD	(IY+CLU2),D
	LD	(IY+CLU3),C
	LD	(IY+CLU4),B
	EXX 
	LD	(IY+LEN1),E
	LD	(IY+LEN2),D
	LD	(IY+LEN3),C
	LD	(IY+LEN4),B
	EXX 
	CALL	LOADDIR
	AND	A
	RET 



FINDD03	LD	BC,0x0020
	ADD	IX,BC
	JR	NC,FINDD01
FINDD04	POP	AF
	OUT	(PAGE3),A
	LD	A,4
	SCF 
	RET 

; FIND "MASKAREA" IN DIRECTORY

FINDDIR	LD	A,DIRPAGE
	CALL	BANK
	PUSH	AF
	LD	IX,ADRDIR
FINDD01	LD	A,(IX+00)
	OR	A
	JR	Z,FINDD04
	CP	0xE5
	JR	Z,FINDD03
	LD	A,(IX+11)
	AND	0x10
	JR	Z,FINDD03
	LD	HL,MASKARE
	LD	D,IXH
	LD	E,IXL
	EX	DE,HL
	LD	B,11
FINDD02	LD	A,(DE)
	CP	"?"
	JR	Z,FINDD05
	CP	(HL)
	JR	NZ,FINDD03
FINDD05	INC	HL
	INC	DE
	DJNZ	FINDD02
	LD	A,(IX+0)
	CP	"."
	JP	NZ,ADDSPEC
	LD	A,(IX+1)
	CP	"."
	JP	NZ,IT_DIR
	LD	HL,DIRSPEC
	LD	D,H
	LD	E,L
	LD	BC,0x100
	XOR	A
	CPIR 
	LD	BC,0x100
	LD	A,'\\'
	CPDR 
	INC	HL
	AND	A
	EX	DE,HL
	SBC	HL,DE
	EX	DE,HL
	JR	NZ,ROTZ
	INC	HL
ROTZ	LD	(HL),0
IT_DIR	LD	E,(IX+CLU1)
	LD	D,(IX+CLU2)
	LD	C,(IX+CLU3)
	LD	B,(IX+CLU4)
	EXX 
	LD	E,(IX+LEN1)
	LD	D,(IX+LEN2)
	LD	C,(IX+LEN3)
	LD	B,(IX+LEN4)
	EXX 
	POP	AF
	OUT	(PAGE3),A
	AND	A
	RET 

ADDSPEC	LD	E,IXL
	LD	D,IXH
	LD	HL,DIRSPEC
	LD	BC,0xFF
	XOR	A
	CPIR 
	DEC	HL
	DEC	HL
	LD	A,'\\'
	CP	(HL)
	INC	HL
	JR	Z,ADDSPE0
	LD	(HL),A
	INC	HL
ADDSPE0	LD	BC,0x0820
MM1	LD	A,(DE)
	INC	DE
	CP	C
	JR	Z,MM2
	LD	(HL),A
	INC	HL
MM2	DJNZ	MM1
	LD	A,(DE)
	INC	DE
	CP	C
	JR	Z,MM3
	LD	(HL),"."
	INC	HL
	LD	(HL),A
	INC	HL
	LD	A,(DE)
	INC	DE
	CP	C
	JR	Z,MM3
	LD	(HL),A
	INC	HL
	LD	A,(DE)
	CP	C
	JR	Z,MM3
	LD	(HL),A
	INC	HL
MM3	LD	(HL),0
	JP	IT_DIR

CURRDIR	EX	DE,HL
	LD	HL,DIRSPEC
CURDIR1	LD	A,(HL)
	OR	A
	LDI 
	JP	NZ,CURDIR1
	RET 

LOADDIR	XOR	A
	LD	HL,0
	LD	IX,0
	LD	B,0
	CALL	MOVE_FP
	LD	A,DIRPAGE
	CALL	BANK
	PUSH	AF
	LD	B,3
LOADFFF	PUSH	BC
	LD	HL,0xC000
	LD	DE,0xC001
	LD	BC,0x3FFF
	LD	(HL),L
	LDIR 
;	LD	A,(DRIVE)
;	LD	(IY+FDRV),A
;	LD	C,(IY+LEN1)
	LD	C,(IY+LEN2)
	LD	B,(IY+LEN3)
	LD	E,(IY+LEN4)
	LD	D,0
	SRL	D
	RR	E
	RR	B
	RR	C
	SRL	D
	RR	E
	RR	B
	RR	C
	SRL	D
	RR	E
	RR	B
	RR	C
	LD	E,(IY+CLU1)
	LD	D,(IY+CLU2)
	LD	L,(IY+CLU3)
	LD	H,(IY+CLU4)
	LD	IXH,D
	LD	IXL,E
	LD	B,C
	LD	A,B
	OR	A
	JR	Z,ERRLEND
	CP	0x08
	JR	C,NORLEND
	LD	B,8
NORLEND	
	LD	A,(CDDRIVE)
;	LD	C,BIOS.DRV_READ
	LD	DE,ADRDIR
;	RST	ToBIOS
	SPBIOS BIOSF.DRV_READ
	POP	BC
	JR	NC,LOADMMM
	DEC	B
	JP	NZ,LOADFFF
	POP	AF
	OUT	(PAGE3),A
	SCF 
	LD	A,20
	RET 

ERRLEND	POP	BC
	POP	AF
	OUT	(PAGE3),A
	SCF 
	LD	A,20
	RET 

LOADMMM	POP	AF
	OUT	(PAGE3),A
	CALL	CORRDIR
	AND	A
	RET 

CORRDIR	LD	A,DIRPAGE
	CALL	BANK
	PUSH	AF
	LD	HL,ADRDIR
	LD	DE,ADRDIR
CORRL1	PUSH	DE
	LD	C,(HL)
	LD	B,0
	LD	DE,ENTRYBF
	LDIR 
	POP	DE
	PUSH	HL
	LD	HL,FCDFLEN
	LD	C,(HL)
	LD	B,0
	ADD	HL,BC
	INC	HL
	LD	(HL),0
	SBC	HL,BC
	PUSH	DE
	CALL	MASK
	POP	HL
	LD	BC,11
	ADD	HL,BC
	LD	A,(FCDFLAG)
	BIT	1,A	;IS IT DIR?
;	AND	2
	LD	C,0x01	;ATTRIBUT FILE
	JR	Z,CORRL0
	LD	C,0x10	;ATTRIBUT DIRECTORY
CORRL0	BIT	0,A	;IS IT HIDDEN
	JR	Z,CORRL00
	SET	1,C
CORRL00
	LD	(HL),C
	INC	HL
	XOR	A
	LD	B,8
FILLCDN	LD	(HL),A
	INC	HL
	DJNZ	FILLCDN
	LD	A,(FCDSEC+2)
	LD	(HL),A
	INC	HL
	LD	A,(FCDSEC+3)
	LD	(HL),A
	INC	HL
;MKDATE
	PUSH	HL
	LD	A,(FCDYEAR)
	LD	IXL,A
	LD	IXH,0
	LD	DE,1900
	ADD	IX,DE
	LD	A,(FCDMOUN)
	LD	E,A
	LD	A,(FCDDAY)
	LD	D,A
	LD	A,(FCDHOUR)
	LD	H,A
	LD	A,(FCDMIN)
	LD	L,A
	LD	A,(FCDSECN)
	LD	B,A
	CALL	MK_TIME
	POP	HL
;	LD	DE,0x0000	;TIME
	LD	(HL),E
	INC	HL
	LD	(HL),D
	INC	HL
;	LD	DE,0x0000	;DATE
	LD	(HL),C
	INC	HL
	LD	(HL),B
	INC	HL

	LD	DE,(FCDSEC)
	LD	(HL),E
	INC	HL
	LD	(HL),D
	INC	HL
	EX	DE,HL
	LD	HL,FCDLEN
	LDI 
	LDI 
	LDI 
	LDI 
	POP	HL
	BIT	7,H
	JR	Z,CORRL2
	LD	A,(HL)
	OR	A
	JP	NZ,CORRL1
	LD	L,0
	INC	H
	JR	Z,CORRL2
	LD	A,(HL)
	OR	A
	JP	NZ,CORRL1
CORRL2	XOR	A
	LD	(DE),A
	LD	DE,(ROOTDIR+0)
	LD	L,(IY+CLU1)
	LD	H,(IY+CLU2)
	AND	A
	SBC	HL,DE
	JR	NZ,CORRL6
	LD	DE,(ROOTDIR+2)
	LD	L,(IY+CLU3)
	LD	H,(IY+CLU4)
	AND	A
	SBC	HL,DE
	JR	NZ,CORRL6
	LD	HL,ADRDIR
	LD	A,(HL)
	CP	" "
	JR	NZ,CORRL4
	LD	(HL),0xE5
	LD	BC,0x0020
	ADD	HL,BC
	LD	A,(HL)
	CP	" "
	JR	NZ,CORRL4
	LD	(HL),0xE5
	JR	CORRL4
CORRL6	LD	HL,ADRDIR
	LD	A,(HL)
	CP	" "
	JR	NZ,CORRL4
	LD	(HL),"."
	LD	BC,0x0020
	ADD	HL,BC
	LD	A,(HL)
	CP	" "
	JR	NZ,CORRL4
	LD	(HL),"."
	INC	HL
	LD	(HL),"."
CORRL4	POP	AF
	OUT	(PAGE3),A
	AND	A
	RET 

;SYSTEM ATTRIBUTES
READONLY_ATR	EQU	%00000001
HIDDEN_ATR	EQU	%00000010
SYSTEM_ATR	EQU	%00000100
ARCHIVE_ATR	EQU	%00100000

ENTRYBF
	DEFB	0x00	;Entry lenght
	DEFB	0x00	;XAR in	LBN
FCDSEC	DEFW	0x00,0x00	;Start sector (Intel)
	DEFW	0x00,0x00	;Start sector (Motorola)
FCDLEN	DEFW	0x00,0x00	;Lenght	file (Intel)
	DEFW	0x00,0x00	;Lenght	file (Motorola)
FCDYEAR	DEFB	0x00	;Year
FCDMOUN	DEFB	0x00	;Mount
FCDDAY	DEFB	0x00	;Day
FCDHOUR	DEFB	0x00	;Hour
FCDMIN	DEFB	0x00	;Minute
FCDSECN	DEFB	0x00	;Second
	DEFB	0x00	;Reserve
FCDFLAG	DEFB	0x00	;Flag
	DEFB	0x00	;Interlive size
	DEFB	0x00	;Interlive skip	factor
	DEFW	0x0000	;Volume	Set Sequence (Intel)
	DEFW	0x0000	;Volume	Set Sequence (Motorola)
FCDFLEN	DEFB	0x00
DEFSA	EQU	$-ENTRYBF
FCDNAME	DB	0x100-DEFSA DUP 0

ROOTDIR	DEFW	0,0
ROOTLEN	DEFW	0,0

DIRSIZE	DEFW	0

BANK	LD	C,A
	LD	B,0
	LD	HL,BANKTBL
	ADD	HL,BC
	IN	A,(PAGE3)
	LD	C,PAGE3
	OUTI 
	RET 

BANKTBL	DEFB	0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF
	DEFB	0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF

;HANDTA	DEFB	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
;	DEFB	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0

MASKARE
	DEFB	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
	DEFB	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0

; HL - MASK "file*.t??"
; DE - 11 bytes	filename
; RET: C=2 FILE	WITHOUT	EXTENTION
;      C=1 FILE	WITH EXTENTION

MASK	PUSH	HL
	PUSH	DE
	LD	H,D
	LD	L,E
	INC	DE
	LD	(HL),0x20
	LD	BC,10
	LDIR 
	POP	DE
	POP	HL
	LD	A,(HL)
	CP	0x21
	RET	C
	LD	BC,0x0902
MASK1	LD	A,(HL)
	CP	0x21
	CCF 
	RET	NC
	CP	0x22
	JR	Z,MASK7
	CP	"*"
	JR	Z,MASK3
	CP	"+"
	JR	Z,MASK7
	CP	","
	JR	Z,MASK7
	CP	"."
	JR	Z,MASK5
	CP	"/"
	JR	Z,MASK7
	CP	":"
	JR	Z,MASK7
	CP	";"
	JR	Z,MASK7
	CP	"<"
	JR	Z,MASK7
	CP	"="
	JR	Z,MASK7
	CP	">"
	JR	Z,MASK7
	CP	"["
	JR	Z,MASK7
	CP	'\\'	;
	JR	Z,MASK7
	CP	"]"
	JR	Z,MASK7
	CP	"|"
	JR	Z,MASK7
	CP	"a"
	JR	C,MASK2
	CP	"{"
	JR	NC,MASK2
	SUB	0x20
MASK2	LD	(DE),A
	INC	HL
	INC	DE
	DJNZ	MASK1
MASK7	LD	A,16
	SCF 
	RET 

MASK3	LD	A,"?"
	INC	HL
	DJNZ	MASK6
	LD	A,16
	SCF 
	RET 

MASK6	LD	(DE),A
	INC	DE
	DJNZ	MASK6
	LD	B,1
	JR	MASK1

MASK5	LD	A," "
	INC	HL
	DJNZ	MASK4
	LD	B,4
	DEC	C
	JP	NZ,MASK1
	LD	A,16
	SCF 
	RET 

MASK4	LD	(DE),A
	INC	DE
	DJNZ	MASK4
	LD	B,4
	DEC	C
	JP	NZ,MASK1
	LD	A,16
	SCF 
	RET 

SYSTIME	LD	DE,DAY*256+MONTH ;DAY/MONTH
	LD	HL,0x0000	;HOUR/MINUTE
	LD	BC,0x0001	;SECOND/WEEKDAY
	LD	IX,YEAR		;YEAR
	AND	A
	RET 

;INPUT:	D - DAY;  E - MONTH
;	H - HOUR; L - MINUTE
;	B - SECOND (0...59)
;	IX- YEAR (0...65535)
;OUTPUT: DE - hhhhhmmmmmmsssss	h - hour, m - min, s - sec/2
;	 BC - yyyyyyymmmmddddd	y - year, m - month, d - day
;			       (1980-2108)

MK_TIME	LD	A,L
	RLCA 
	RLCA 
	SLA	A
	RL	H
	SLA	A
	RL	H
	SLA	A
	RL	H
	SRL	B
	OR	B
	LD	L,A

	LD	BC,0xF844	;(-1980)
	ADD	IX,BC
	LD	A,E
	RLCA 
	RLCA 
	RLCA 
	RLCA 
	AND	0xF0
	LD	B,IXL
	SLA	A
	RL	B
	OR	D
	LD	C,A
	EX	DE,HL
	AND	A
	RET 

;INPUT:	DE - hhhhhmmmmmmsssss  h - hour, m - min, s - sec/2
;	BC - yyyyyyymmmmddddd  y - year, m - month, d -	day
;			       (1980-2108)
;OUTPUT: D - DAY;  E - MONTH
;	 H - HOUR; L - MINUTE
;	 B - SECOND (0...59)
;	 IX- YEAR (0...65535)

RMKTIME	EX	DE,HL
	LD	A,C
	AND	0x1F
	LD	D,A
	SRL	B
	RR	C
	LD	A,C
	RRCA 
	RRCA 
	RRCA 
	RRCA 
	AND	0x0F
	LD	E,A
	LD	C,B
	LD	B,0
	LD	IX,1980
	ADD	IX,BC
	LD	A,L
	AND	0x1F
	ADD	A,A
	LD	B,A
	SRL	H
	RR	L
	SRL	H
	RR	L
	SRL	H
	RR	L
	SRL	L
	SRL	L
	AND	A
	RET 

;  INPUT: HL - "C:\\DIR\\DIR\\DIR_NAME[\\]",0

CHDIR	CALL	GETWORD
	RET	C
	LD	HL,TMPNAME
	LD	A,(HL)
	OR	A
	CALL	NZ,OPENDIR
	RET 
;