Re: N3101 RAM for Missile Command

If the pictures of the 3101 are correct, then it
cannot be equivalent to the 2101. The 2101/5101 come
in a much larger package with 22 pins, this is a
standard 16 pin DIP package. Besides, the standard
Missile Command does not use 2101's, it uses 4116's
for the main RAM and a 74x89 (as was mentioned in
another email) for the color ram in. This has got to
be a 7489/74ls289/etc cross, depending on specs.

Thanks,
-Chris

--- MyPearl <mypearl@dds.nl> wrote:
> It seems Tom McClintock is right, it is equivalent
> to a 2101, which is
> equivalent to the 5101 and the AMD 9101. These are
> much easier to source.
> Now i'll try to find one and test. I'll check out
> the pinout of these to see
> if it matches the schematics of Missile Command.
>
> Thanks,
>
> Mendel
>
> ----- Original Message -----
> From: "Marc Alexander" <marcwolf123@yahoo.com>
> To: <rasterlist@vectorlist.org>
> Sent: Thursday, January 29, 2004 10:21 PM
> Subject: Re: RASTER: N3101 RAM for Missile Command
>
>
> >
> > Hi Mendel,
> >
> > Here's something that might help, I've gotta run
> now, but
> > send me a msg later and I'll see if I have pinouts
> > or even some old ones around...
> >
> > http://www.cpu-zone.com/3101.htm
> > http://www.cpu-zone.com/Intel%20ram.htm
> >
> > (btw I got this from www.google.com typing in
> "3101 ram" ,
> > google is great! :) )
> >
> > Best regards,
> >
> > Marc
> >
> > ----- Original Message -----
> > From: "MyPearl" <mypearl@dds.nl>
> > To: <rasterlist@vectorlist.org>
> > Sent: Thursday, January 29, 2004 6:36 PM
> > Subject: Re: RASTER: N3101 RAM for Missile Command
> >
> >
> > > It could be, the only clue to what type it is
> comes from the printing on
> the
> > > chip, and that is N3101. The manual does not
> specify what type it is at
> all.
> > > N3101 didn't sound too familiar at all to me...
> > >
> > > Well, I'll look up the pinout for the 2101 and
> compare the shematics
> later
> > > this day.
> > >
> > > Thank you both for the tip!
> > >
> > > Mendel
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: "Tom McClintock" <tomm@mgcap.com>
> > > To: <rasterlist@vectorlist.org>
> > > Sent: Wednesday, January 28, 2004 9:41 PM
> > > Subject: Re: RASTER: N3101 RAM for Missile
> Command
> > >
> > >
> > > > You sure that it isn't a 2101 or 5101 RAM?
> Both are equivalent.
> > > >
> > > > tm
> > > >
> > > > MyPearl wrote:
> > > > >
> > > > > Hello group,
> > > > >
> > > > > I found that the COLOR RAM (at L7) of my
> missile command has
> litterary
> > > > > cracked open. Weird thing is it, still
> works, but becomes unstable
> now
> > > and
> > > > > then and triggers the Watchdog.
> > > > >
> > > > > The partnumber on the chip is 'N3101'
> > > > >
> > > > > I cannot find a datasheet for this part, nor
> a source, or a cross to
> a
> > > > > replacement on the web...
> > > > >
> > > > > Does anyone know where I could get this RAM,
> or equivalent?
> > > > >
> > > > > Hope someone knows...
> > > > >
> > > > > Thanks
> > > > >
> > > > > Mendel Pearl
> > > >
> > >
> >
>
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> > > chris@westnet.com
> > > >
> > >
> >
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> > >
> >
> >
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Received on Fri Jan 30 07:53:23 2004