fixed MSGFLG handling, prevents FB64 display glitches

c64/basic/basic_main_loop.s

@@ -7,6 +7,10 @@ basic_main_loop:
 	// Tell user we are ready
 	jsr ready_message
 
+	// Enable Kernal messages
+	lda #$80
+	jsr JSETMSG
+
 basic_read_next_line:	
 	// Read a line of input
 	ldx #$00

c64/basic/cmd_load.s

@@ -11,15 +11,6 @@ cmd_load:
 	// middle of a program. For safety, we do.
 	jsr basic_do_clr
 	
-	// Setup Kernal to print control messages or not
-	lda #$80 // display control messages and omit error messages
-	ldx CURLIN+1
-	cpx #$FF
-	beq !+
-	lda #$00 // direct mode - don't display anything
-!:
-	jsr JSETMSG
-
 	// Set filename and length
 	lda #$00
 	sta FNLEN

c64/basic/cmd_run.s

@@ -2,11 +2,12 @@ cmd_run:
 	// RUN clears all variables
 	jsr basic_do_clr
 cmd_goto:
+	// Disable Kernal messages
+	lda #$00
+	jsr JSETMSG
+
 	// Reset line pointer to first line of program.
-	lda TXTTAB+0
-	sta OLDTXT+0
-	lda TXTTAB+1
-	sta OLDTXT+1
+	jsr init_oldtxt
 
 	jsr basic_end_of_statement_check
 	bcs !+