iicplusdelay.asm

BCA8:   sta     $C028		; 4
        nop			; 2 -
        nop			; 2 -
        nop			; 2 -
        nop			; 2 -
        rts			; 6 -

FCA8:   nop			; 2 -
        nop			; 2 -
        nop			; 2 -
        nop			; 2	Virtual jump lands here
	nop			; 2
        nop			; 2
        nop			; 2
        jsr     $FCB5		; 6
        jmp	$C784		; 3
        
C784:  sta      $C028		; 4
C787:  rts			; 6	; Also an RTS here in other bank ($8787)

FCB5:					; 18 cycles to here

2020: 5A	PHY		; 3
2021: A0 9A	LDY #$9A	; 2
2023: DA	PHX		; 3
2024: 38	SEC		; 2
2025: AA	TAX		; 2
2026: B9 00 C0	LDA $C000,Y	; 4	34 cycles @ 4MHz

2029: 8A	TXA		; 2
202A: E9 01	SBC #$1		; 2
202C: D0 FC	BNE -4 ($202A)	; 3 (-1)
202E: CA	DEX		; 2
202F: D0 F5	BNE -11 ($2026)	; 3 (-1)
2031: FA	PLX		; 4
2032: 7A	PLY		; 4
2033: 60	RTS		; 6	25 cycles @ 1MHz  (+13 for leap back chain)