19 Jan
2003
19 Jan
'03
4:32 a.m.
On Sun, 19 Jan 2003, J.C.Wren wrote:
Peter Wallace
Mesa Electronics
You think? I've not held an Apple I board in my
hands, but looking at the
routing, I don't see any of the characteristics marks of a hand layout. The
tracks are too even, and way they're run horizontally is a hallmark of early
routing assistance algorithms.
--John
I have held one in my hands (when they were selling kits at the entance to the
Homebrew computer club - thats been a while)
The time frame alone pretty much suggests a hand layout... I would have
guessed that Wozniac taped it up himself.
Also hand layouts can be very even because they were typically reduced 2X or
even 4X and were layed out on a light table over an alignment grid.
-----Original Message-----
From: cctalk-admin(a)classiccmp.org
[mailto:cctalk-admin@classiccmp.org]On
Behalf Of Peter C. Wallace
Sent: Sunday, January 19, 2003 11:13
To: cctalk(a)classiccmp.org
Subject: RE: Apple 1 schematics
On Sun, 19 Jan 2003, J.C.Wren wrote:
No, I meant that the board only has components
on one
side, unlike a few
custom through-hole boards I've seen, and
more and more
surface mount type
boards.
I wonder what CAD system they used to lay it out with.
--John
CAD system? Most likely hand taped at that time...
Ah yes, Bishop Graphics decals and puppets, black .032" tape,
Exacto knives,
Mylar overlays... Brings back memories (and nightmares)
PCW