1 May
2012
1 May
'12
1:38 p.m.
----- Original Message:
Date: Mon, 30 Apr 2012 12:46:30 -0400
From: Keith Monahan <keithvz at verizon.net>
To: cctalk at classiccmp.org
Subject: Re: EPROM and EEPROM Programmers
I want something that connects to my computer like all
my other devices.
Something that does not require anything special.
A USB eeprom burner that I can use on any of my current desktop/laptop
computers is what I want.
----
Well, by golly, then that's what you should get; lots of them out there!
I generally find that when I have a round hole it's easier to find a round
peg instead of complaining about the corners on the square ones ;-)
I actually find an RS-232 serial interface the most flexible in terms of
machines I can connect it to, including through a USB <> serial adapter if
necessary.
I take it that "*all* your other devices" must be less than 15 years old
then, so what brings you to the Classic Computer List?
;-)
Ironic that folks on the "Classic" computer list don't even have a machine
with a serial or parallel port; I built programmers for both my PET and my
AIM65, not much more than a connector and a socket since like many classics
there were lots of available I/O pins, but from this discussion about
programmers it seems that actually _using_ a classic computer for something
useful isn't very common...
m
2 May
2 May
11:42 a.m.
I actually find an RS-232 serial interface the most
flexible in terms of
machines I can connect it to, including through a USB <> serial adapter if
necessary.
So do I. Of my 200-or-so computers, well over half have RS232 interfaces,
and many of the rest can have them added. Those machines range from
things that will fit in my pocket to things that live in 6' racks.
Vonversely not one of my machines has a USB port. I don't think any of
themn can.
I take it that "*all* your other devices"
must be less than 15 years old
then, so what brings you to the Classic Computer List?
;-)
Ironic that folks on the "Classic" computer list don't even have a machine
with a serial or parallel port; I built programmers for both my PET and my
AIM65, not much more than a connector and a socket since like many classics
there were lots of available I/O pins, but from this discussion about
programmers it seems that actually _using_ a classic computer for something
useful isn't very common...
I only have classic computers. Well. I only have machines that are well
over 10 years old, I am not sure that all of them should be called
'classic'. So I do use them for 'useful things', including progamming
EPROMs.
My first EPROM programmer was home-made. It linked to a home-made serial
port on my CoCo (running OS-9 of course!). Said programmer could program
and emulate 2716s, 2732s, 2754s and 27128s. The reason fo the emulation
was that I decided I wanted a wuicker way to debug my firmware than
erasing and burning an EPROM for every fix. So I put 16K of RAM in it (a
couple of 6264s) and the associated logic.
Of course, since I didn't have a progammer when I built that, I couldn't
use a microprocessor or microcontroller in it. It's 3 boards of TTL, a
dumb UART, RAM, etc. All hand-wired. And yes, it still works.
-tony
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