size optimization in BASIC, reordered some code to avoid accidental similarities

c64/basic/cmd_load.s

@@ -127,10 +127,7 @@ got_loadaddress:
 	// or go back to the READY prompt if LOAD was called from direct mode.
 
 	// Reset to start of program
-	lda TXTTAB+0
-	sta OLDTXT+0
-	lda TXTTAB+1
-	sta OLDTXT+1
+	jsr init_oldtxt
 
 	// XXX - should run program if LOAD was used in program mode
 	jmp basic_main_loop
@@ -139,10 +136,7 @@ got_loadaddress:
 basic_relink_program:
 
 	// Start by getting pointer to the first line
-	lda TXTTAB+0
-	sta OLDTXT+0
-	lda TXTTAB+1
-	sta OLDTXT+1
+	jsr init_oldtxt
 
 basic_relink_loop:
 	// Is the pointer to the end of the program

c64/basic/init_oldtxt.s

@@ -0,0 +1,9 @@
+
+init_oldtxt:
+
+	lda TXTTAB+0
+	sta OLDTXT+0
+	lda TXTTAB+1
+	sta OLDTXT+1
+
+	rts

c64/kernal/fda3.ioinit.s

@@ -69,11 +69,11 @@ IOINIT:
 	// XXX: calibrate TOD for both CIA's, see here: https://codebase64.org/doku.php?id=base:efficient_tod_initialisation
 
 	// Enable CIA1 IRQ and ~50Hz timer (https://csdb.dk/forums/?roomid=11&topicid=69037)
+	
+	// First disable IRQ generation for both CIA's
 	lda #$7F
-	sta CIA1_ICR // disable all
-    
-    // Same for CIA2 - it can generate IRQs too, we definitely don't want this
 	sta CIA2_ICR
+	sta CIA1_ICR
 
 	// Set timer interval to ~1/60th of a second