26 Jan
2005
26 Jan
'05
12:54 p.m.
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(a)classiccmp.org>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk(a)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