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An Apple One replica with an Arduino Mega 2560

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Mega6502

Mega6502 is an experiment implementing a minimal 8 bit platform using an Arduino and a 6502.

Hardware

Mega6502 requires an Ardunio Mega 2560 development board and CMOS 65c02. The 65c02 should be connected to the Arduino as follows

	  5v      GND                                 5v   Arduino 
	  |        |       +------\/------+           |
	  |        +----  1| Vss     /RES |40 -- 3k3 -+--- 52
	  +--- 3k3 -----  2| RDY       ϕ2 |39  
	  |               3| ϕ1       /SO |38  
	  +--- 3k3 -----  4| IRQ       ϕ0 |37 -------- 53
	  |               5| NC        NC |36  
	  +--- 3k3 -----  6| /NMI      NC |35  
	  |               7| SYNC     R/W |34 -------- 51
	  +-------------  8| Vcc       D0 |33 -------- 49
	    22 ---------  9| A0        D1 |32 -------- 48 
	    23 --------- 10| A1        D2 |31 -------- 47
	    24 --------- 11| A2        D3 |30 -------- 46
	    25 --------- 12| A3        D4 |29 -------- 45
	    26 --------- 13| A4        D5 |28 -------- 44
	    27 --------- 14| A5        D6 |27 -------- 43
	    28 --------- 15| A6        D7 |26 -------- 42
	    29 --------- 16| A7       A15 |25 -------- 30
	    37 --------- 17| A8       A14 |24 -------- 31
	    36 --------- 18| A9       A13 |23 -------- 32
	    35 --------- 19| A10      A12 |22 -------- 33
	    34 --------- 20| A11      Vss |21 ---+
	                   +--------------+      |
	                                        GND

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An Apple One replica with an Arduino Mega 2560

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