26 Jan
2005
26 Jan
'05
4:36 a.m.
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
26 Jan
26 Jan
4:46 a.m.
Jay West wrote:
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.
sounds pretty steep :(
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
You're probably thinking of ADVANCED Micro Devices ;-)
8:03 a.m.
Would a 74S287 (256x4 tri-state output) also work? Unicorn
Electronics lists those at $7.49 each.
The Nat Semi DM74S287 is on the supported device list of my BP Micro
programmer, no idea if it is supported by the 29B.
On Wed, 26 Jan 2005 12:36:29 -0600, Jay West <jwest(a)classiccmp.org> wrote:
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.
8:25 a.m.
the 74S287 can't be programmed on the 29B/Unipak, however, I just bought a
unipak2B which does program the 74S287, which is definitely cheaper than the
82S129. Cool!
Jay
----- Original Message -----
From: "Glen Slick" <glen.slick(a)gmail.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk(a)classiccmp.org>
Sent: Wednesday, January 26, 2005 4:03 PM
Subject: Re: HP loader rom chips
Would a 74S287 (256x4 tri-state output) also work?
Unicorn
Electronics lists those at $7.49 each.
The Nat Semi DM74S287 is on the supported device list of my BP Micro
programmer, no idea if it is supported by the 29B.
On Wed, 26 Jan 2005 12:36:29 -0600, Jay West <jwest(a)classiccmp.org> wrote:
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.
12:57 p.m.
Yes!
Where is Unicorn Electronics??
----- Original Message -----
From: "Glen Slick" <glen.slick(a)gmail.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk(a)classiccmp.org>
Sent: Wednesday, January 26, 2005 5:03 PM
Subject: Re: HP loader rom chips
Would a 74S287 (256x4 tri-state output) also work?
Unicorn
Electronics lists those at $7.49 each.
The Nat Semi DM74S287 is on the supported device list of my BP Micro
programmer, no idea if it is supported by the 29B.
On Wed, 26 Jan 2005 12:36:29 -0600, Jay West <jwest(a)classiccmp.org> wrote:
> 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.
2:08 p.m.
Bob Shannon wrote:
Yes!
Where is Unicorn Electronics??
sort of like here -->
The web site says and knows all ...
27 Jan
27 Jan
12:55 p.m.
Thanks to a fellow listmember, I found some fuji 7502's which my programmer
will program, and are identical to the signetics 82S129, $5 bucks each.
I also found some signetics 82S181's, which are the 8Kb proms for HP
microcode boards for $6 each. No luck finding 82S141's though.
I'm happy now :) Thanks to all who replied!
Jay
PS - I also found a stock of 2114 rams :)
26 Jan
26 Jan
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
7220
days inactive
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days old
7 comments
5 participants
participants (5)
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bfranchuk＠jetnet.ab.ca -
bshannon＠tiac.net -
emu＠ecubics.com -
glen.slick＠gmail.com -
jwest＠classiccmp.org