;MAYDAY.200
;cold-start file recovery for the T200
;	(c)1989 Wilson Van Alst
;		  76576,2735
;
opendo	equ	11635	;ROM routine
found	equ	28443	;'found',0
makhol	equ	33448	;ROM routine
marker	equ	16724	;xri128/mov m,a
altbuf	equ	63574	;AltLCD bufr

	org	altbuf	;pgm runs here

;create FOUND.DO and "enlarge" it:

	LXI	H,found	;HL->'found'
	CALL	opendo	;open DO file
			; HL->start
	LXI	B,19400 ;BC=hole size
	CALL	makhol	;move pointers
	RC		;ret if no room
			; (protect from
			;  accidental
			;  pgm use)

;get rid of "illegal" chrs:

mochr	MOV	A,M	;A=chr
	CPI	26	;eof marker?
	CZ	marker	;yes:change it
	cpi	127	;illegal chr?
	cz	marker	;yes:change it
	INX	H	;adjust pointer
	RST	3	;HL<DE?
	JC	mochr	;yes:go again
;
	rst	0	;back to menu
;
	end