[sebhc] H89 roms

[Joe Smith]

Finally got into the upload page, the file with 444-142 is called 
mtrs,.zip,whenever it gets posted
At 05:39 PM 12/15/2005 +0000, you wrote:
>That's great news about the MTR ROMs, Lee. I'm waiting anxiously for a copy
>of the 444-142, but there's no pressure...   ;-)
>
>BTW, does anyone already have binaries or logic diagrams for the PALs used
>as memory and I/O map decoders (U516 / U517 / U550)? If not, perhaps we
>should look at 'probing' these?
>
>I would guess that it should be a relatively easy task to run through the
>input addresses and monitor the output select lines to work out the logic
>function. Then, if a PAL fails, it should be possible to replace it with a
>programmed EPROM or use a newer PAL / CPLD (e.g. on a daughterboard if the
>pinout is different).
>
>----- Original Message -----
>From: "Jack Rubin" <jack.rubin at ameritech.net>
>To: <sebhc at sebhc.org>
>Sent: Thursday, December 15, 2005 1:39 PM
>Subject: RE: [sebhc] H89 roms
>
>
> > Lee,
> >
> > Please send me copies or upload them to the SEBHC ftp site and I'll put
>them
> > in the archive.
> > Thanks.
> >
> > Jack.
> >
> > > -----Original Message-----
> > > From: sebhc-bounces at sebhc.org
> > > [mailto:sebhc-bounces at sebhc.org] On Behalf Of Lee Hart
> > > Sent: Wednesday, December 14, 2005 12:39 PM
> > > To: sebhc at sebhc.org
> > > Subject: Re: [sebhc] H89 roms
> > >
> > >
> > > Mark Garlanger wrote:
> > > > If someone on the list has a way of reading the chip, but
> > > doesn't want
> > > > to take it out of their system, I have a loose 444-142
> > > which I could
> > > > let them borrow.
> > >
> > > I have all of the H19 and H89 ROMs on disk already as .HEX
> > > files. But it's an
> > > H17 disk :-)  Give me a couple days to get a modem cable
> > > between my H89 and
> > > PC and I can send them to anyone who needs them.
> > >
> > > For that matter, I have an EPROM programmer and plenty of
> > > blank EPROMs for
> > > these old chips. It's a Valley Data Sciences EPROM
> > > programmer, which runs on
> > > the H89.
> > > --
> > > Lee A. Hart    814 8th Ave N    Sartell MN 56377
> > > leeahart at earthlink.net
> > > --
> > > Delivered by the SEBHC Mailing List
> > >
> >
> >
> > --
> > Delivered by the SEBHC Mailing List
>
>--
>Delivered by the SEBHC Mailing List

Joe Smith
joebandit
jtsdadinaz
Conbuilder debugger /Programmer

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