started separating 'printf' as debug-only routine

c64/basic/,imports.s

@@ -3,5 +3,9 @@
 
 #import "KERNAL_combined.sym"
 
+
+#if CONFIG_DBG_PRINTF
 .label printf              = KERNAL.printf
-.label printf_printhexbyte = KERNAL.printf_printhexbyte
+#endif
+
+.label print_hex_byte      = KERNAL.print_hex_byte

c64/basic/basic_warm_start.s

@@ -16,12 +16,11 @@ basic_warm_start:
 	jsr print_packed_message
 
 	lda CMP0+1
-	jsr printf_printhexbyte
+	jsr print_hex_byte
 	lda CMP0+0
-	jsr printf_printhexbyte
+	jsr print_hex_byte
 	lda #$0D
 	jsr JCHROUT
 
 !:
 	jmp basic_main_loop
-

c64/basic/cmd_break.s

@@ -1,17 +1,16 @@
 cmd_stop:
-	jsr printf // XXX don't use printf, use packed messages!
-	.text "BREAK"
-	.byte 0
+	ldx #38 // "BREAK"
+	jsr print_packed_message
 
-	// Check for direct mode
 	// Are we in direct mode
 	lda CURLIN+1
 	cmp #$FF
 	beq !+
+
 	// Not direct mode
-	jsr printf // XXX don't use printf, use packed messages!
-	.text " IN "
-	.byte 0
+	ldx #37
+	jsr print_packed_message
+
 	lda CURLIN+1
 	ldx CURLIN+0
 	jsr print_integer

c64/basic/do_basic_error.s

@@ -152,9 +152,8 @@ do_basic_error:
 	beq !+
 
 	// We were in a program, so show IN <line>
-	jsr printf // XXX don't use printf, use packed messages
-	.text " IN "
-	.byte 0
+	ldx #37
+	jsr print_packed_message
 
 	lda CURLIN+1
 	ldx CURLIN+0