cmv@ttrde.UUCP (C M Votava) (02/26/89)
Here are the unixpc expansion bus pinouts, as far as I can tell from information I have at hand. If there are any corrections, please send them to [att!]ihlpm!cmv 2/25/89 Unixpc Expansion Bus Pinouts Bus Connector Sheet Number Number Symbol Description ======================================================================== JX-1 21 Digital Ground JX-2 21 +5v JX-3 21 Analog Ground JX-4 22 XI/OEN+ Expansion I/O Enable JX-5 22 Audio From Tape JX-6 17 XPERR Expansion Parity Error JX-7 22 Audio From Phone Line JX-8 21 Digital Ground JX-9 21 Digital Ground JX-10 22 INT01* Interrupt 1 JX-11 22 Audio To Phone Line JX-12 22 INT05* Interrupt 5 JX-13 21 Digital Ground JX-14 21 +5v JX-15 22 XPCK+ Expansion Processor Clock JX-16 21 +12v JX-17 21 Digital Ground JX-18 21 +12v JX-19 22 X20MCK+ ?? Expansion Modem Clock ?? JX-20 21 XLDS Expansion Lower Data Strobe JX-21 21 Digital Ground JX-22 21 -12v JX-23 22 XMEN+ Expansion Memory JX-24 21 XUDS Expansion Upper Data Strobe JX-25 22 XENRAS* Expansion Enable Row Address Strobe JX-26 21 XR/W Expansion Read/Write JX-27 22 SPARE0 Spare JX-28 22 XRST* Expansion Reset JX-29 21 Digital Ground JX-30 21 +5v JX-31 21 +5v JX-32 22 RFBG* Refresh Bus Grant JX-33 22 EXP1BG* Expansion Board 1 Bus Grant JX-34 22 EXP2BG* Expansion Board 2 Bus Grant JX-35 22 EXP0BG* Expansion Board 0 Bus Grant JX-36 21 Digital Ground JX-37 22 EXP2RQ* Expansion Board 2 Bus Request JX-38 22 SPARE1 Spare JX-39 22 EXP0RQ* Expansion Board 0 Bus Request JX-40 22 EXP1RQ* Expansion Board 1 Bus Request JX-41 21 +5v JX-42 21 XD15 Expansion Data Bus JX-43 21 Digital Ground JX-44 21 XD14 Expansion Data Bus JX-45 21 XD13 Expansion Data Bus JX-46 21 XD12 Expansion Data Bus JX-47 21 XD11 Expansion Data Bus JX-48 21 XD10 Expansion Data Bus JX-49 21 XD09 Expansion Data Bus JX-50 21 Digital Ground JX-51 21 XD07 Expansion Data Bus JX-52 21 XD08 Expansion Data Bus JX-53 21 XD05 Expansion Data Bus JX-54 21 XD06 Expansion Data Bus JX-55 21 XD03 Expansion Data Bus JX-56 21 XD04 Expansion Data Bus JX-57 21 Digital Ground JX-58 21 +5v JX-59 21 XD02 Expansion Data Bus JX-60 21 XD01 Expansion Data Bus JX-61 21 XD00 Expansion Data Bus JX-62 22 XMA20 Expansion Mapped Address Bits JX-63 22 XMA19 Expansion Mapped Address Bits JX-64 21 Digital Ground JX-65 22 XMA18 Expansion Mapped Address Bits JX-66 22 XMA17 Expansion Mapped Address Bits JX-67 22 XMA16 Expansion Mapped Address Bits JX-68 22 XMA15 Expansion Mapped Address Bits JX-69 21 +5v JX-70 22 XMA14 Expansion Mapped Address Bits JX-71 21 Digital Ground JX-72 22 XMA13 Expansion Mapped Address Bits JX-73 22 XMA12 Expansion Mapped Address Bits JX-74 21 XA21 Expansion Address Bus JX-75 21 XA20 Expansion Address Bus JX-76 21 XA19 Expansion Address Bus JX-77 21 XA18 Expansion Address Bus JX-78 21 Digital Ground JX-79 21 XA17 Expansion Address Bus JX-80 21 XA16 Expansion Address Bus JX-81 21 XA15 Expansion Address Bus JX-82 21 XA14 Expansion Address Bus JX-83 21 XA13 Expansion Address Bus JX-84 21 XA12 Expansion Address Bus JX-85 21 Digital Ground JX-86 21 +5v JX-87 21 XA11 Expansion Address Bus JX-88 21 XA10 Expansion Address Bus JX-89 21 XA09 Expansion Address Bus JX-90 21 XA08 Expansion Address Bus JX-91 21 XA07 Expansion Address Bus JX-92 21 Digital Ground JX-93 22 XBP+ Expansion Bus Parity Result JX-94 21 XA02 Expansion Address Bus JX-95 21 XA03 Expansion Address Bus JX-96 21 XA04 Expansion Address Bus JX-97 21 XA03 Expansion Address Bus JX-98 21 XA02 Expansion Address Bus JX-99 21 Digital Ground JX-100 21 XA01 Expansion Address Bus -Craig Votava [att!]ihlpm!cmv