On Sat, Jan 26, 2019 at 4:59 AM Warner Losh via
cctalk
<cctalk at classiccmp.org> wrote:
In Japanese, but interesting.
http://www.geocities.jp/kugimoto0715/index.html
Talks about interfacing old school high current 5V interfaces like FDD
or
SASI/SCSI into into lower voltage lower current RPI pins.
Warner