[sebhc] Re: Cassette software tapes for H-8

[Barry Watzman]

6044 is probably a military version of the [TMS]4044.


-----Original Message-----
From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of
dwight elvey
Sent: Tuesday, August 01, 2006 2:19 AM
To: sebhc at sebhc.org
Subject: RE: [sebhc] Re: Cassette software tapes for H-8

Hi
My boards used 4kx1 chips. I located some with the part number
6044 at Anchor Electronics here in Santa Clara, Ca. They were not
cheap as I recall.
Dwight



>From: "Barry Watzman" <Watzman at neo.rr.com>
>Reply-To: sebhc at sebhc.org
>To: <sebhc at sebhc.org>
>Subject: RE: [sebhc] Re: Cassette software tapes for H-8
>Date: Mon, 31 Jul 2006 22:01:39 -0400
>
>Last sentence should read "but I think that the Heath boards used the 4Kx1
>chips"
>
>[I think that the H19 TLB used the 1Kx4 parts]
>
>
>-----Original Message-----
>From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of
>Barry Watzman
>Sent: Monday, July 31, 2006 9:53 PM
>To: sebhc at sebhc.org
>Subject: RE: [sebhc] Re: Cassette software tapes for H-8
>
>The memory chips are either 1K x 4 or 4K x 1, I think that the Heath boards
>used 1Kx4 and these are Texas Instruments TMS4044's.  There are a number of
>substitutes for these (2147 mainframe static memory cache chips are the 
>best
>substitute, but are expensive; the MM5257 is another substitute.)  The 1Kx4
>chips were TMS4045's, and were also more commonly sold as 2114's (their
>Intel part number), but I think that the Heath boards used the 1Kx4 chips.
>
>
>
>-----Original Message-----
>From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of
>jmacgraith at cox.net
>Sent: Monday, July 31, 2006 8:35 PM
>To: sebhc at sebhc.org
>Cc: WVerish at aol.com
>Subject: Re: [sebhc] Re: Cassette software tapes for H-8
>
>Wayne,
>Memory chips are available from resellers. My son got me 32K for my h8 a
>couple of years ago. I didn't ask him what he paid, but all he needed was
>the p/n of the chip and he had no problem procuring them.
>Jack
>---- WVerish at aol.com wrote:
> > Does anyone know where I might get any of the tapes that were included
>with
> > the H-8 computer? Also I am looking for memory chips (or a source) so I
>can
> > populate my 16K memory board for the H-8.
> >
> >
> > Thanks much,
> >
> > Wayne Verish
>
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