J64 SFDC
IC1 74LS244 IC2 74LS688 IC3 74LS245 IC4 PAL12L6 programmable logic IC5,8 74LS240 (if using WD2791 or WD2795), or 74LS244 (if using WD2793 or WD2797). IC6,18 74LS240 IC7 74LS374 IC9 74LS74 IC10 2791 or 2793 or 2795 or 2797 IC11 74LS164 IC12 74LS32 IC13 74LS93 IC14 74LS02 IC15 7406 IC16 74LS367 IC17 7407
R1,2,3 2k2 R4,5,13,14 4k7 R6,7,8,9,10 330R R11 10k R12 12k R15 1k RP1,2 4k7 × 8 SIL VR1,2 47k
C1,2 22µ C3 1µ C4 150n C5-9 100n VC1 6-60pF