HP loader rom chips

From: Bob Shannon <bshannon_at_tiac.net>
Date: Wed Jan 26 20:54:27 2005

Seems like a reasonable price. These parts have not been made
in a long time.

I really should get a few blanks, I need to burn a boot rom for
my IDE disk, and a few spare paper tape reader rom's would be
nice to have too.

I was able to burn Signetics 82S129's using a Xeltex programmer
but I'm not sure which 'compatible' rom number I selected to get
good parts.

Also keep in mind that you probably will get some failures during
programming, a 100% yield is a bit unrealistic.

----- Original Message -----
From: "Jay West" <jwest_at_classiccmp.org>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk_at_classiccmp.org>
Sent: Wednesday, January 26, 2005 1:36 PM
Subject: HP loader rom chips


> Jameco claims to have real Signetics 82S129's in (not substituted parts).
> These are for the HP 21MX loader roms.
>
> They are quoting me $9.95 each for qty 1-10.
>
> Anyone know of a better source, or want to go in with me on this? I will
> probably get about 10.
>
> Equivalent parts (that my 29B can program):
> Monolithic Memories 6301
> Harris 7611
> Texas Instruments 24S10
> Applied Micro Devices 27S21
>
> So maybe someone knows of a source for the above parts that is cheaper.
>
> Jay
>
>
>
Received on Wed Jan 26 2005 - 20:54:27 GMT