Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!wuarchive!uunet!meaddata!johnt
From: johnt@meaddata.com (John Townsend)
Newsgroups: comp.sys.apple2
Subject: I Need a PAL
Message-ID: <4227@meaddata.meaddata.com>
Date: 7 May 91 13:58:14 GMT
Sender: usenet@meaddata.com
Organization: Mead Data Central, Dayton OH
Lines: 22

I have a Street Electronics "Alphabits II" serial card which up to now I have
been using as a modem interface.  Now I want to use it as an interface to an
Imagewriter II, and would like very much to add the 64K "BufferKit" option to
the Alphabits card.  I called Street and found out that they don't make the
Alphabits card anymore, let alone the BufferKit, and so I am on my own to get
one.

The BufferKit consists of three chips, which plug into the sockets labeled
U1 BUFFER (40-pin), U2 RAM1, and U3 RAM2 (both 16-pin).  I figure that U2 and
U3 are each 256K x 1-bit DRAMS (for a 64K byte buffer) and that U1 is some kind
of PAL or PLA used as an address controller for the RAM (since other size
buffers were also available).  Obviously, the DRAMs will be easy to find, but I
need some help with the PAL (I assume).  If you have access to an Alphabits II
card with the 64K BufferKit option, can you tell me exactly what chips are
installed in U1, U2, and U3, and (please, please, please!) send me a copy of
the program/mask in U1?  Thanks!

--
     John Townsend                 Internet:   johnt@meaddata.com
 c/o Mead Data Central             UUCP:       ...!uunet!meaddata!skibum!johnt
     P.O. Box 933                  Telephone:  (513) 865-7250 
  Dayton, Ohio, 45401