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Path: utzoo!watmath!clyde!burl!ulysses!bellcore!decvax!hplabs!sdcrdcf!usc-oberon!spencer
From: spencer@usc-oberon.UUCP (Randy Spencer)
Newsgroups: net.micro.amiga
Subject: 5.25" disk drive for IBM emulation
Message-ID: <294@usc-oberon.UUCP>
Date: Mon, 21-Apr-86 18:28:31 EST
Article-I.D.: usc-ober.294
Posted: Mon Apr 21 18:28:31 1986
Date-Received: Thu, 24-Apr-86 05:46:54 EST
Distribution: net
Organization: USC Computing Services, Los Angeles
Lines: 54

I while back someone was asking about the schematic I had posted outlining
how to construct a 5.25" drive for the amiga.  The question was:

in the following:

+++++++++++++++++++++++++                         (A)
                         +                         | 
  Symbols:               +                         | 4 
  -------    resistor:   +                         o---|\   6
    ______               +                         |   | |O------
   !      !        |     +                         o---|/        
   ! chip !        \     +                           5
   !______!        /     +
                   \     +          (A)              
     NAND gate:    |     +           |
                         +           |
     -----|\             +           o-----o-----o-----o
          | |O----       +           |     |     |     |
     -----|/             +       ____|_____|_____|_____|______ 
                         +      !                             !
  junction   no-junction +      !    10    11    12    13     !   8
                         +      !                           Q !-----
      |           |      +      !                             !
    --o--       --|--    +      !         1/2  7474         _ !
      |           |      +      !                           Q !-----
                         +      !                             !   9
+++++++++++++++++++++++++       !_____________________________! 


...what does (A) connect to.   

I have not built the drive, but I did the translation of the schematic to
computer readable form and what was ment there (I figure) was for all points
labelled (A) to be connected to each other.

I hope that this answers your questions.


PS.  I note that my original posting has been archived at Trantor.umd.edu.
     For those of you who missed my original posting you may find a copy of
     it there via anonymous ftp login with *any* password (I use "guest").
     I sure do appreciate this service, I have used it many a time, like when
     we didn't get hack.12 and hack.13.



-- 
==============================================================================
Randal Spencer  - Student DEC Consulting -   University of Southern California
....I disclaim everything, I had nothing to do with it, it's not my fault!....
(213) 743-5363  UUCP...!{uscvax,sdcrdcf,engvax,scgvaxd,smeagol}!oberon!spencer
Arpa: Spencer@USC-ECL  or  Spencer@USC-Oberon          Bitnet: Spencer@USCVAXQ
Home: 937 N. Beverly Glen Bl. Bel Air California 90077          (213) 470-0428
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