Components required on all Econet Eurocards are;-
PCB Acorn Computers Ltd part no. 200,024 IC 1 MC6854P Advanced Data Link Controller IC 2, 3 2 off LM3l9N High speed dual comparitor IC 4 SN75159N Dual differential line driver IC 5 74LS123N Dual retriggerable monostable IC 8 DM81LS95 or 97 Tri-state octal buffer IC 9 74LS132N Quad 2 input schmitt NAND gate IC 10 74LS14N Hex schmitt inverter IC 11, 12 2 off 74LS138N 3 to 8 line decoder R 9, 10, 11 and 12 4 off lOOK resistors R 13, 15, 16 and 17 4 off lOOK R 14, 18 and 21 3 off 2M2 R 19, 20, 22 and 23 4 off 10K R 24, 25 and 26 3 off 1K R 27 39K R 28 and 29 2 off 10K R 35 to 42 8 off 47K C 5 1OnF disc capacitor C6 1nF disc C7 10 to 47uF electrolytic C 11, 12 and 13 3 off 47nF discs C 14 10 to 47uF electrolytic 1 off 28 way DIL IC socket 1 off 20 way DIL IC socket 3 off 16 way DIL IC sockets 5 off 14 way DIL IC sockets 1 off 64 way Eurocard plug DIN 41612 (for acorn bus)
For stations generating the network clock add:-
IC 6 74LS74N Dual D type flip-flop IC 7 CD40l7B Decoded decade counter R 30 4K7 R 31 1K2 or 1K5, S.O.T. R 32 and 33 2 off 1K C 9 and 10 2 off 15OpF discs 1 off 16 pin DIL IC socket 1 off 14 pin DIL IC socket
For terminating stations at the end of a network refer to the terminating instructions which specify some off;-
R 1 to 8 C 1 to 4 D 1 to 6