Re: Four-Bit (ALU) Slice (was: Quad-Bit Slicers)

Um, the 2901 is a *4 bit* ALU; not really the same as a quad 1 bit ALU.
A 1 bit ALU isn't really that useful, but I digress.

The math box cascades four, 4 bit ALUs to produce a *16 bit* ALU.

There is no off the shelf single chip replacement. You could put all four in a single fpga
if you were really board.

-Mark

----- Original Message -----
From: Curtis H. Wilbar Jr. <vector@hawkmountain.net>
To: <vectorlist@synthcom.com>
Sent: Wednesday, February 12, 2003 10:59 AM
Subject: Re: VECTOR: Quad-Bit Slicers

>
> If I am correct in what I've been reading, I think the quad
> bitslice atari chips are 4 AM2901s in one package. So, if
> that is the case, then an AM2901 is a direct replacement for
> the single bit slice chips like in BZ, Tempest, etc.
>
> -- Curt
>
> >From: MKDUD@aol.com
> >Date: Wed, 12 Feb 2003 10:36:49 EST
> >Subject: Re: VECTOR: Quad-Bit Slicers
> >To: vectorlist@synthcom.com
> >MIME-Version: 1.0
> >
> >In a message dated 2/11/2003 9:01:38 PM Eastern Standard Time,
> >tony@tonyjones.com writes:
> >
> >
> >> > you can even put one into a battlezone/tempest instead of the 4 original
> >> chip
> >> > s.
> >>
> >> Sorry to be the bearer of bad news but AM2901s (the 40pin branded variant
> >> of these bit slice chips) are $1.50 each from B&G Micro. They've had them
> >> at this price for longer than I can remember.
> >>
> >>
> >
> > Can one of these go in ANY socket on the BZ/Tempest/RB aux board, and
> >eliminate all 4 of the 137004's?
> >
> >Thank You,
> >MK
>

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Received on Wed Feb 12 11:28:46 2003