Apple ][ stuff

From: R. Stricklin <red_at_bears.org>
Date: Fri May 22 22:05:53 1998

Hi.

I found the following Apple ][ bits today and being the Apple neophyte
that I am, I could use some information on them.

Orange Micro Grappler +. How is this better than the Orange Micro Printer
Interface that I got with my ][plus? I assume the quad DIP switch at the
back end is to set communications parameters. Looking at the traces I'm
guessing it's a serial interface.

Mega-Bit RAM card. Looks pretty boring actually, but I don't see any
obvious way to cable it to the motherboard RAM in the standard fashion. 16
chips, labelled 'C1516', 'C1515', or 'C1517'. No other markings on the
chips. I suppose it's just standard 16k RAMs?

The most interesting: a "Mockingboard Sound/Speech 1'. Looks remarkably
like a DAC/speech synth. I'm guessing even stereo? It's got two DACs and a
pair of LM386 chips. It's got three potentiometers across the top and a 4
pin BERG header which I'm thinking is the output stage. I want to play
with this. How?

Last but not least is the Apple ][ motherboard. I'm wondering which ][ it
came from. I compared it to my ][plus and it looks remarkably similar with
the following differences:

Mystery board: Has 'APPLE II MAIN LOGIC BD RFI' silkscreened underneath
the copyright and part number (820-0044-D), one bank of 300 ns Apple
branded 4116 RAMs, and Apple/Microsoft ROMs. At the back of the board
by the mounting holes it is marked '606-X548'.

Apple ][plus: Has nothing silkscreened beneath the copyright and part
number (820-0044-01 or -0I), three banks of 200 ns Apple badged 416C RAMs,
and fairly generic looking ROMs that have only Apple copyrights on them.

What are the differences between the Apple ][, ][plus, and //e?

What I'd really like is to start a good long discussion on Apple use and
lore. If somebody has the patience to start this with me, I'd appreciate
it. I've got other stuff I want to know about but this'll do for now. (:

Thanks.

ok
r.
Received on Fri May 22 1998 - 22:05:53 BST

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