bryce@cbmvax.commodore.com (Bryce Nesbitt) (06/08/90)
In article <109@bear.digital.co.jp> lee@bear.digital.co.jp (Lee Jones) writes: >WANTED: Amiga 1000 keyboard interface specifications: > - Pin descriptions with voltages > - Timing diagrams (or information re: what's on the computer side) >or > - Information on ordering a technical manual. The technical manual for the keyboard is Appendix H of the Amiga Hardware Manual from Addison-Wesley (ISBN: 0-201-18157-6). Voltages are GND and +5. Pin descriptions need to come from the specific computer involved; it is different for the A1000 and A2000. For the A1000: 1 - GND 2 - +5 3 - KDAT 4 - KCLK Here's an idea of how things work (see the Hardware Manual for details): The KDAT line is active low; that is, a high level (+5V) is interpreted as 0, and a low level (0V) is interpreted as 1. _____ ___ ___ ___ ___ ___ ___ ___ _________ KCLK \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ ___________________________________________________________ KDAT \_____X_____X_____X_____X_____X_____X_____X_____/ (6) (5) (4) (3) (2) (1) (0) (7) First Last sent sent >Please send help! >by FAX: 011-81-06-613-5888 >by e-mail: lee%digigw.lab.digital.co.jp@uunet.uu.net -- |\_/| . "ACK!, NAK!, EOT!, SOH!" "Lawyers: America's untapped export market." {X o} . Bryce Nesbitt, Commodore-Amiga, Inc. (") BIX: bnesbitt U USENET: bryce@commodore.COM -or- uunet!cbmvax!bryce