kwf@ecersg.ncsu.edu (Ken Fernald) (09/19/90)
Hi, can anyone provide either schematics or a reference on how to interface to the standard IBM PC/XT/AT bus? thanks, -- +----------------------------+------------------------------------------------+ | Kenneth W. Fernald | "To recognize that nature has neither a | | kwf@ecersg.ncsu.edu | preference for our species nor a bias against | | North Carolina State Univ. | it takes only a little courage" - James Randi |
bkoball@cup.portal.com (Bruce R Koball) (09/19/90)
RE: Ken Fernald's request for IBM/XT/AT bus interface specs, the best source for this is ANNABOOKS, 12145 Alta Carmel Ct., Suite 250-262, San Diego, CA 92128, 800-/462-1042, or 619/271/9526 in CA. Specifically a 200 pg., soft- bound book, "AT Bus Design" by Edward Solari. They've got other good reference books as well as XT and AT BIOS's with source code....... Bruce Koball Motion West 2210 Sixth Street Berkeley, CA 94710 415-540-7503 bkoball@cup.portal.com
robin@uhccux.uhcc.Hawaii.Edu (Robin Amano) (09/20/90)
In article <1990Sep18.193839.4827@ncsuvx.ncsu.edu> kwf@ecersg.ncsu.edu (Ken Fernald) writes: >Hi, > >can anyone provide either schematics or a reference on how >to interface to the standard IBM PC/XT/AT bus? IBM XT bus: __________ A1 I/O CH CLK B1 GND A2 D7 B2 RESET DRV A3 D6 B3 5V A4 D5 B4 IRQ2 A5 D4 B5 -4.93V A6 D3 B6 DRQ2 A7 D2 B7 -11.88V A8 D1 B8 RESERVED A9 D0 B9 12.00V A10 I/O CH RDY B10 GND ____ A11 AEN B11 MEMW ____ A12 A19 B12 MEMR ___ A13 A18 B13 IOW ___ A14 A17 B14 IOR _____ A15 A16 B15 DACK3 A16 A15 B16 DRQ3 _____ A17 A14 B17 DACK1 A18 A13 B18 DRQ1 _____ A19 A12 B19 DACK0 A20 A11 B20 CLK A21 A10 B21 IRQ7 A22 A9 B22 IRQ6 A23 A8 B23 IRQ5 A24 A7 B24 IRQ4 A25 A6 B25 IRQ3 _____ A26 A5 B26 DACK2 A27 A4 B27 T/C A28 A3 B28 ALE A29 A2 B29 5.00V A30 A1 B30 OSC A31 A0 B31 GND