added helper marks for head align tool, use CIA for stable timing

c64/kernal/init/fda3.ioinit.s

@@ -138,26 +138,26 @@ IOINIT:
 
 	// Checked using VICE that original ROM initializes timers this way
 	ldx #$08
-	stx CIA1_CRB    // $DC0F
-	stx CIA2_CRA    // $DD0E
-	stx CIA2_CRB    // $DD0F
+	stx CIA1_CRB     // $DC0F
+	stx CIA2_CRA     // $DD0E
+	stx CIA2_CRB     // $DD0F
 
 	// Set VIC-II bank - at least the 'Operacja Proboszcz' game needs this within IOINIT
 	// Checked on original ROMs, that it sets bit #2 (RS-232 output) high
 
 	ldx #%00000111 // XXX adapt this to IEC idle state, JMP at the end won't be needed
-	stx CIA2_PRA    // $DD00
+	stx CIA2_PRA     // $DD00
 
 	// Put something sane in the IRQ timer
 	jsr setup_irq_timer
 
 	// Enable timer A to run continuously (http://codebase64.org/doku.php?id=base:timerinterrupts)
 	ldx #$11
-	stx CIA1_CRA    // $DC0E
+	stx CIA1_CRA     // $DC0E
 
 	// Enable timer interrupt
 	ldx #$81
-	stx CIA1_ICR    // $DC0D
+	stx CIA1_ICR     // $DC0D
 
 #if CONFIG_IEC