31 May
2001
31 May
'01
4:07 a.m.
I'm looking for help making a 256*8 Tri-state PROM for the CPU card of a
Lisa.
Its a MMI 6409-1N part. I don't have a data sheet and I don't have the means
to burn one.
If I supply the part and the data, can anyone here burn a few of them for
me?
Alleged parts equivilent to the MMI 6409-1N are:
Signetics 82S135
National 74S471
TI 28L22
Reply to me off list via jlewczyk(a)speakeasy.net if you'd prefer.
Thanks
John
----------------------------
classiccmp digest subscriber
31 May
31 May
5:26 a.m.
I have a very old Data I/O 29B here with a UniPak 2B. The cheat sheet says I
can burn a TI 29L22, a NAT 74LS471, and a PHL 82S135. It might be worth a
try if nothing better turns up.
There are companies that will do this for $$$.
--
Jonathan Engdahl Rockwell Automation
Principal Research Engineer 24800 Tungsten Road
Advanced Technology Euclid, OH 44117 USA
Euclid Labs http://users.safeaccess.com/engdahl
----- Original Message -----
From: "John Lewczyk" <jlewczyk(a)speakeasy.net>
To: <classiccmp>
Sent: Thursday, May 31, 2001 12:07 PM
Subject: Can anyone here burn a MMI6309 PROM for a Lisa?
I'm looking for help making a 256*8 Tri-state PROM
for the CPU card of a
Lisa.
Its a MMI 6409-1N part. I don't have a data sheet and I don't have the
means
to burn one.
If I supply the part and the data, can anyone here burn a few of them for
me?
Alleged parts equivilent to the MMI 6409-1N are:
Signetics 82S135
National 74S471
TI 28L22
Reply to me off list via jlewczyk(a)speakeasy.net if you'd prefer.
Thanks
John
----------------------------
classiccmp digest subscriber
9:07 a.m.
On Thu, 31 May 2001 12:07:38 -0400, John Lewczyk wrote:
#I'm looking for help making a 256*8 Tri-state PROM for the CPU card of
a
#Lisa.
#Its a MMI 6409-1N part. I don't have a data sheet and I don't have the
means
#to burn one.
#
#If I supply the part and the data, can anyone here burn a few of them
for
#me?
#
#Alleged parts equivilent to the MMI 6409-1N are:
#Signetics 82S135
#National 74S471
#TI 28L22
#
I also have a Data I/O 29B with Unipak 2A. I used it just last week to
burn a 3-rail 2708 and a couple of 2716s.
I had it read the MMI 6309 from my Lisa (using the Signetics part
number). It showed 16 lines of code, the rest blank.
If this is what you think one should look like, then I can probably
program it. This chip, btw came from the cpu board of my Lisa 2/5.
Louis
8923
days inactive
8923
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2 comments
3 participants
participants (3)
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engdahl＠cle.ab.com -
jlewczyk＠speakeasy.net -
louiss＠gate.net