HP loader rom chips

[Jay West]

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 at gmail.com>
To: "General Discussion: On-Topic and Off-Topic Posts" 
<cctalk at 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 at 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.
>
>