[sdiy] 45 vs. 90 degree pcb traces

[Phillip Harbison]

Here's an example of routing a bus with 4 signals. It gets much
worse with larger buses. If you're trying to weave a 16-bit bus
between the pads for RAM chips, the extra space for 90° angles
is almost prohibitive.

Regarding red/blue, I've only watched one layout guy at work.
He did red/blue with colored pencils on ordinary graph paper.
This was to plan the layout. Afterwords he created the layout
on semi-transparent (cloudy) mylar using black tape. He had a
variety of tape in various widths. This was early in my career
(maybe 1980-1983). ECAD was already taking over by 1983.

-- 
Phil Harbison
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Routing.jpg
Type: image/jpeg
Size: 6712 bytes
Desc: not available
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20200214/97b69958/attachment.jpg>