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Legacy Parts Replacment Guide

65xx Replacements Cross Reference 

Part Number  Manufacturer 
W65C02S The Western Design Center
6502 MOS Technology
G65SC02 CMD / GTE
R6502 Rockwell
R65C02 Rockwell
W65C21N The Western Design Center
6521 MOS Technology
6820 AMI
6821 AMI
EF6821 ST Micro.
HD6821 Hitachi
M6820 Motorola
M6521 Motorola
R6520 Rockwell
R6521 Rockwell
W65C21S The Western Design Center
G65SC21 CMD/GTE
HD6321 Hitachi
R65C21 Rockwell
W65C22N The Western Design Center
6522 MOS Technology
R6522 Rockwell
R65NC22 Rockwell
W65C22S The Western Design Center
G65C22 CMD/GTE
R65C22 Rockwell

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