#Apple 1 Replica W65C02S <-> Arduino Due 3.3v GND 3.3v | | +------\/------+ | | +---- 1| VPB /RES |40 -- 3k3 -+--- RST BTN +--- 3k3 ----- 2| RDY PHI2O |39 | 3| PHI1O SOB |38 +--- 3k3 ----- 4| IRQ PHI2 |37 -------- 52 | 5| MLB BE |36 +--- 3k3 ----- 6| /NMI NC |35 | 7| SYNC R/W |34 -------- 53 +------------- 8| VDD D0 |33 -------- 30 44 --------- 9| A0 D1 |32 -------- 31 45 --------- 10| A1 D2 |31 -------- 32 2 --------- 11| A2 D3 |30 -------- 33 3 --------- 12| A3 D4 |29 -------- 34 4 --------- 13| A4 D5 |28 -------- 35 5 --------- 14| A5 D6 |27 -------- 36 6 --------- 15| A6 D7 |26 -------- 37 7 --------- 16| A7 A15 |25 -------- 47 8 --------- 17| A8 A14 |24 -------- 46 9 --------- 18| A9 A13 |23 -------- 13 10 --------- 19| A10 A12 |22 -------- 12 11 --------- 20| A11 VSS |21 ---+ +--------------+ | GND