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M1BYT > TECH 05.08.04 20:02l 32 Lines 1353 Bytes #999 (0) @ WW
BID : B32767M1BYT
Read: GUEST OE7FMI
Subj: Re: Prom info required
Path: DB0FHN<DB0MRW<DB0WUE<DK0WUE<GB7FCR
Sent: 040805/1800Z @:GB7FCR.#16.GBR.EU #:4827 [Blackpool] FBB-7.03a $:B32767M1B
From: M1BYT@GB7FCR.#16.GBR.EU
To : TECH@WW
ZS1AYJ Opined with considerable skill:-
> I am trying to find any information regarding the programming procedure
> for the old 74S287 / 82S129 fusable proms. I need to know the programming
> sequence / timing / voltage & current limit etc in enough detail to enable
> me to build a hardware programmer.
I seem to remember it was just a matter of setting up the address then
applying enough voltage to blow the 'fuses'. It was rather slow, but you could
do it with a series of switches for setting the address, then another set of
switches for the data.
ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ»
º 73 from Harry, M1BYT @ GB7FCR.#16.GBR.EU º
ÌÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͹
º International Museums Weekend 19th+20th June 2004 º
º www.ukradioamateur.org/imw/index.html º
ÌÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͹
º The ARC's FL/RAE courses + Newcomers Introduction º
º to amateur radio:- http://www.ukradioamateur.org/ º
ÌÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍËÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͹
º QTH: Garforth, W. Yorks.. º Timed 16:21 º
º harry.m1byt@tiscali.co.uk º 05 Aug 2004 º
ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÊÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ
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