C64/4064/Educator64/PET64/SX-64 Parts Location Part Number Description U6 2114 1K x 4 static RAM U9-U12, U21-U24 4164-20 (8) 64K x 1 dynamic RAM U9-U10 50464-150 (2) 64K x 4 dynamic RAM U7 6510 CPU U1, U2 6526 (2) CIA U19 6567 VIC-II (NTSC) U19 6569 VIC-II (PAL) U18 6581 SID U17 906114-01 7700/82S100 PLA U31 251527-01 7701/8701 CLK GEN (except version A) U5 901225-01 2332 ROM character U3 901226-01 2364 ROM Basic 2 A000-BFFF U4 901227-01 2364 ROM KERNAL E000-FFFF U4 901227-02 2364 ROM KERNALr E000-FFFF U4 901246-01 2364 ROM KERNALr E000-FFFF (4064) U4 251104-04 8K ROM KERNALr E000-FFFF (SX-64) U4 901227-03 2364 ROM KERNALr2 E000-FFFF C64E Parts Location Part Number Description U19 2114 1K x 4 static RAM (with 251715-01) U10, U11 41464-150 (2) 64K x 4 dynamic RAM U1, U2 6526 (2) CIA U9 6581/8580 SID U6 8500 CPU U7 8565 VIC-II U20 8701 CLK GEN U8 251715-01 64 pin custom chip U8 252535-01 64 pin custom chip with 1K x 4 RAM U5 2332C ROM character U4 251913-01 23128 ROM Basic 2r2