Subject: Re: Info needed on two cards
Message-ID: <39DAE411.AE53B67F@swbell.net>
From: Rubywand <rubywand@swbell.net>
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Date: Wed, 04 Oct 2000 03:02:25 -0500
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Ernest writes ...
> 
> I finally picked up a ROM 03 IIgs system today, and it came with a couple of
> cards that I'm curious about.
> 
> One is a sound card of some kind (I think) but I'm not sure. It has a
> rainbow cable that plugs into J25, by the speaker connector, and stretches
> across the board to a small, single chip card that has what looks like a
> sound output plug that connects to the back of the computer. The card has
> Roger Wagner Publishing (1988) on it. Can anyone tell me anything about this
> card?
> 

     Yes. The card is a sound input digitizer (AD converter) which was included
in HyperStudio packages. You can plug in a microphone or other sound source and
record to memory using various sound input utilities. There is a socket to pass
through the J25 signals to a Stereo Card and a power cable which goes to the
12VDC pins located at the back of the motherboard.


> The other is a memory card but I'm not sure how much memory it has. It's an
> Apple IIgs Memory Expansion card, and it's fully populated. It has "670-0025
> A" (1986) marked on it. Can anyone tell me how much memory this thing has?
> The chips are 256-15's by various companies.

     The standard Apple IIgs Memory Expansion Card holds up to 1MB. There is
some info about various other configurations at
http://home.swbell.net/rubywand/Csa2HDWHACK.html#013 .


> 
> Also, I should have picked this up by now but what are the benefits to
> having a ROM 03 board, compared to a ROM 00 or 01? It looks like my ROM 03
> board has 1 meg of Fast memory but other than more memory than the older
> models, what is different or better about it?
> 
 ....

     There are discussions comparing the ROM-01 and ROM 3 at
http://home.swbell.net/rubywand/A2FAQs5MAINHALL.html#013  and 
http://home.swbell.net/rubywand/Csa2HDWHACK.html#020 .

*** Need to correct this. The card's function is to supply a sound input socket
plus some amplification and shaping for the signal which goes to IIgs circuitry
which takes care of A/D conversion.


Rubywand