21 Aug
1998
21 Aug
'98
2:36 p.m.
On Fri, 21 Aug 1998, Doug Spence wrote:
On Sun, 16 Aug 1998, Tony Duell wrote:
:-). The right tool is better though.
Yes, but I don't feel like hunting down (and paying for) a tool that's
really only good for this one job. I've only got the one Mac, and I don't
plan on opening it too frequently.
That is really not quite true, as it is the most commonly used size in
computers. Simply longer than you need for other applications. Think of
it as a Torx driver for those that don't want to get too close to their
work 8->
- don
It's not that hard to open up a Mac, given that
extra-long Torx driver.
I've got a straight-blade screwdriver that fits. Now, if I got a whole truck-load of old Macs and was
threatened with death
if I didn't open them all up, I'd certainly want the proper tool. :)
[re: logic probes]
donm(a)cts.com
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
Don Maslin - Keeper of the Dina-SIG CP/M System Disk Archives
Chairman, Dina-SIG of the San Diego Computer Society
Clinging tenaciously to the trailing edge of technology.
Sysop - Elephant's Graveyard (CP/M) Z-Node 9 - 619-454-8412
*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*
see old system support at http://www.psyber.com/~tcj
visit the "Unofficial" CP/M Web site at http://cdl.uta.edu/cpm
with Mirror at http://www.mathcs.emory.edu/~cfs/cpm
A cheap one is easily good enough for most
classics. I used to use a
cheap Tandy/Radio Shack one a lot - although it was only a 10MHz unit, it
was enough for just about every computer I repaired. I've since bought an
HP one, but that's because I also do _design_, not because I need it for
classic computer work.
I just bought a 'cheap' Radio Shack logic probe today, also 10MHz.
Unfortunately, tonight I was powering it with a cheap Radio Shack power
adapter, and it was screetching and had the PULSE light on no matter where
I made contact. So probably I need a power supply with better filtering.
I know that when I used to use this very same power supply with my
Walkman, there was a very audible (and annoying) hum.
Anyway, I don't know what the heck I'm doing with this thing yet. But
I've only used it for a few minutes. I didn't find the problem with the
Mac, but that'll come in time.
I also did a very dumb thing today in that I bought the wrong connectors
for the Mac->Amiga mouse cable I wanted to build. I bought one of each
sex, which any lame-brained dimwit would recognize as wrong as the two
machines in question use ports of the opposite sex.
If I had accidentally bought two female plugs, at least I could've tested
the Mac mouse on the Amiga.
My excuse is that I haven't managed to get more than 4 hours sleep on any
night so far this week. :)
At least I'll be building up a 'spare parts bin' like the rest of you. :)
<lots of good advice about scopes snipped>
Thanks for the advice and info, Tony!
-tony
Doug Spence
ds_spenc(a)alcor.concordia.ca
http://alcor.concordia.ca/~ds_spenc/