Moved the 'conio' files from 'geos-cbm' to 'geos-common' which are believed to work as-is on Apple GEOS too.

git-svn-id: svn://svn.cc65.org/cc65/trunk@5486 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/geos-common/conio/cclear.s

@@ -0,0 +1,51 @@
+;
+; Maciej 'YTM/Elysium' Witkowiak
+;
+; 06.03.2002
+
+; void cclearxy (unsigned char x, unsigned char y, unsigned char length);
+; void cclear (unsigned char length);
+
+	    .include "jumptab.inc"
+	    .include "geossym.inc"
+
+    	    .export		_cclearxy, _cclear
+	    .import		popa, _gotoxy, fixcursor
+	    .importzp		cursor_x, cursor_y, cursor_c
+
+_cclearxy:
+       	pha	    		; Save the length
+	jsr	popa		; Get y
+       	jsr    	_gotoxy		; Call this one, will pop params
+	pla			; Restore the length
+
+_cclear:
+   	cmp	#0		; Is the length zero?
+   	beq	L9  		; Jump if done
+	tax
+	lda	cursor_x	; left start
+	sta	r3L
+	lda	cursor_x+1
+	sta	r3L+1
+	lda	cursor_y	; level
+	sta	r2L
+	clc
+	adc	#8
+	sta	r2H
+	txa			; right end
+	clc
+	adc	cursor_c
+	sta	cursor_c
+	sta	r4L
+	ldx	#r4
+	ldy 	#3
+	jsr 	DShiftLeft
+	lda	curPattern	; store current pattern
+	pha
+	lda	#0		; set pattern to clear
+	jsr	SetPattern
+	jsr	Rectangle
+	pla
+	jsr	SetPattern	; restore pattern
+	jsr	fixcursor
+L9:	rts