PN	CRC-DISPLAY
;
	ORG	08000H
PFL:	EQU	052H
PDR:	EQU	050H
;
START:	LD	A,0
	OUT	4
	LD	(FLAG),A
	RST	020H
	DB	2,13
	DB	'Anfangs'
	DB	'adresse:'
	DB	0A0H
	RST	020H
	DB	16
	LD	DE,(016H)
	RST	020H
	DB	3
	LD	(ANF),HL
	RST	020H
	DB	2
	DB	'Endadre'
	DB	'sse    :'
	DB	0A0H
	RST	020H
	DB	16
	LD	DE,(016H)
	RST	020H
	DB	3
	LD	(END),HL
	RST	020H
	DB	2
	DB	'Bytes pro'
	DB	' Zeile :'
	DB	0A0H
	RST	020H
	DB	16
	LD	DE,(016H)
	RST	020H
	DB	3
	LD	A,L
	OR	A
	JRNZ	EBYT-#
	LD	A,16
EBYT:	LD	(BPZ),A
	RST	020H
	DB	2
	DB	'(A)SC oder'
	DB	'(C)RC '
	DB	0BFH
	RST	020H
	DB	1
	LD	HL,FLAG
	CMP	'A'
	JRNZ	NOASC-#
	SET	1,M
NOASC:	RST	020H
	DB	2,13
	DB	'Printer'
	DB	' (J)/N ?'
	DB	0A0H
	RST	020H
	DB	1
	LD	HL,FLAG
	CMP	'J'
	JRNZ	NOPR-#
	SET	0,M
NOPR:	RST	020H
	DB	2,08CH
	LD	A,080H
	OUT	4
	LD	HL,0
	LD	(SUM),HL
	LD	(TSUM),HL
	EXX
LOOP:	LD	HL,(ANF)
	LD	C,0
NZEI:	LD	A,(BPZ)
	LD	B,A
	LD	(PUFF),HL
	LD	DE,(02BH)
	LD	(BPA),DE
	RST	020H
	DB	7
	RST	020H
	DB	14
	RST	020H
	DB	14
GLZ:	LD	A,M
	INC	HL
	LD	D,0
	LD	E,A
	PUSH	DE
	RST	020H
	DB	6
	RST	020H
	DB	14
	LD	A,B
	CMP	9
	JRNZ	NHAL-#
	RST	020H
	DB	14
NHAL:	EXX
	POP	DE
	ADD	HL,DE
	EXX
	DJNZ	GLZ-#	
	RST	020H
	DB	14
	EXX
	LD	A,(FLAG)
	BIT	1,A
	JRZ	CRC-#
	LD	A,(BPZ)
	LD	B,0
	LD	C,A
	LD	HL,(PUFF)
	LD	DE,(02BH)
	LDIR
	INC	DE
	LD	(02BH),DE
CRC:	LD	A,(FLAG)
	BIT	1,A
	JRNZ	CRC2-#
	LD	DE,(02BH)
	RST	020H
	DB	7
	LD	A,'*'
	LD	(DE),A
CRC2:	LD	DE,(TSUM)
	ADD	HL,DE
	LD	(TSUM),HL
	LD	HL,0
	EXX
	CALL	NEXT
	PUSH	HL
	LD	DE,(END)
	SBC	HL,DE
	POP	HL
	JRNC	DEND-#
	INC	C
	LD	A,C
	CMP	8
	JRNZ	GOAW-#
	RST	020H
	DB	1
	CMP	3
	JRZ	DEND-#
GOAW:	LD	A,C
	CMP	16
	JPC	NZEI
	LD	(ANF),HL
	CALL	BLC
	RST	020H
	DB	1
	CMP	3
	JRZ	DED2-#
	JMP	LOOP
DEND:	CALL	BLC
DED2:	RST	020H
	DB	2
	DB	'File -'
	DB	'CRC :'
	DB	0A0H
	LD	HL,(SUM)
	RST	020H
	DB	7
	RST	020H
	DB	2,08DH
	CALL	NEXT
	RST	020H
	DB	1
	LD	A,0
	OUT	4
	RST	038H
BLC:	RST	020H
	DB	2
	DB	'Block-'
	DB	'CRC :'
	DB	0A0H
	LD	HL,(TSUM)
	RST	020H
	DB	7
	RST	020H
	DB	2,08DH
	CALL	NEXT
	LD	DE,(SUM)
	ADD	HL,DE
	LD	(SUM),HL
	LD	HL,0
	LD	(TSUM),HL
	RET
NEXT:	PUSH	HL
	LD	A,(FLAG)
	BIT	0,A
	JRZ	GENT-#
	LD	HL,(02BH)
	LD	DE,(BPA)
	PUSH	DE
	SBC	HL,DE
	LD	B,L
	POP	HL
PLOP:	LD	A,M
	CMP	32
	JRNC	BOK-#
	LD	A,'.'
BOK:	CALL	POUT
	INC	HL
	DJNZ	PLOP-#
	LD	A,13
	CALL	POUT
	LD	A,10
	CALL	POUT
GENT:	CALL	ENTER
	POP	HL
	RET
POUT:	PUSH	AF
PRL:	IN	PFL
	BIT	0,A
	JRNZ	PRL-#
	POP	AF
	PUSH	BC
	LD	B,0
TIME:	DJNZ	TIME-#
	POP	BC
	OUT	PDR
	RET
ENTER:	LD	HL,(02BH)
	LD	A,L
	AND	0C0H
	LD	L,A
	PUSH	DE
	LD	DE,64
	ADD	HL,DE
	POP	DE
	LD	(02BH),HL
	LD	A,H
	CMP	0F0H
	RNZ
	PUSH	DE
	PUSH	BC
	LD	DE,0EC00H
	LD	HL,0EC40H
	LD	BC,003C0H
	LDIR
	LD	(02BH),DE
	LD	B,64
	LD	A,32
BDEL:	LD	(DE),A
	INC	DE
	DJNZ	BDEL-#
	POP	BC
	POP	DE
	RET
PUFF:	DA	0
BPA:	DA	0
ANF:	DA	0
END:	DA	0
SUM:	DA	0
TSUM:	DA	0
FLAG:	DB	0
BPZ:	DB	0
	END
;
	END