fix some bugs

c64/kernal/chrout.s

@@ -1,9 +1,6 @@
 ; Function defined on pp272-273 of C64 Programmers Reference Guide
 chrout:
 	;; Crude implementation of character output	
-	sta $0400
-	inc $0401
-	jmp chrout
 	
 	;; Write character on the screen
 	ldy current_screen_x
@@ -13,7 +10,7 @@ chrout:
 	;; to insert a 2nd line in this logical line.
 	;; (eg Compute's Mapping the 64 p41)
 	ldx current_screen_y
-	iny current_screen_x
+	iny
 	sty current_screen_x
 	cpy #40
 	beq screen_grow_logical_line

c64/kernal/set_pointer_to_current_screen_line.s

@@ -15,12 +15,13 @@ set_pointer_to_current_screen_line:
 sptcsl_l2:	
 	;; XXX - Should we read the columns per line from
 	;; somewhere?
-	lda #<40
+	ldy #<40
 	;; Double line length if line is linked
-	bit screen_line_link_table,x
+	lda screen_line_link_table,x
 	bpl sptcsl_l1
-	asl
+	ldy #<80
 sptcsl_l1:
+	tya
 	clc
 	adc current_screen_line_ptr+0
 	lda current_screen_line_ptr+1