home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.apple2
- Path: sparky!uunet!munnari.oz.au!comp.vuw.ac.nz!actrix!David.Empson
- From: David.Empson@bbs.actrix.gen.nz
- Subject: Re: A question or two
- Organization: Actrix Information Exchange
- Date: Thu, 10 Sep 1992 13:20:11 GMT
- Message-ID: <1992Sep10.132011.28006@actrix.gen.nz>
- References: <1992Sep09.174634.18343@edsi.plexus.COM>
- Sender: David.Empson@actrix.gen.nz (David Empson)
- Lines: 43
-
- In article <1992Sep09.174634.18343@edsi.plexus.COM> cranem@edsi.plexus.COM (Mike Crane) writes:
- > I have had a Transwarp GS and a PC Transporter installed in my machine
- > (ROM 01 GS) for 3-4 years now, and there is a "feature" on each one that
- > I would like to know the purpose of. Each one has an unused row of
- > pins that look like a ribbon cable connector of some sort could be
- > attached to, but the manuals don't make any metion of what they are
- > meant to be used for. Do they have any *real* use, or were they just put
- > there for "future expansion" posibilities?
-
- This is true for the TransWarp. In theory, a new device could be made
- that plugs into this port and is able to be accessed by the processor
- at maximum speed (7 MHz or whatever). The ZIP GS has a similar but
- incompatible port. In practise, I don't think we're likely to see any
- devices made to connect to these ports - there is a small enough user
- base for IIgs's already, and a device made specifically for a IIgs
- with a TransWarp would not sell enough to be profitable.
-
- There aren't any "unused" connectors on the PC Transporter. It has
- several ports used to connect to various parts of the computer, which
- may not be used on your particular system (most of them are used on a
- IIe or II+ only).
-
- The pair of two-pin jumpers at the front of the card are used to
- intercept the speaker in a II+ or IIe. This isn't needed on the GS.
-
- At the back, there is a five-pin connector which accepts a standard
- IBM PC compatible keyboard (via an adaptor cable). Another two-pin
- jumper is used for composite video on a II+ or IIe. Next to this is a
- 10-pin connector used to intercept the keyboard on a II+ or IIe (via
- another adaptor - needed to detect the Shift keys, etc.)
-
- Another 10-pin connector goes to the "ColorSwitch" RGB adaptor card in
- a IIgs, and below that is the disk drive connector (20 pins).
-
- You may have an empty 40-pin socket at the front of the card: you can
- put an 8087 maths coprocessor in there.
-
- I can't see any other connectors.
- --
- David Empson
-
- Internet: David.Empson@bbs.actrix.gen.nz EMPSON_D@kosmos.wcc.govt.nz
- Snail mail: P.O. Box 27-103, Wellington, New Zealand
-