Er...
>I apologize on the last post, it said that information was originally
>posted by David Shadoff. It actually was not (that was a part of another
>post that I did not include in my email). The mod-switch was done by
>Karl Stenerud and modified by Earnest Rymer.
ACTUALLY.......
If you must know, the original posting about the pin sequence WAS made by
me, circa 1991-92.
At that time, I had already been installing switches in TurboGrafx for
about a year.
My switched Turbo's weren't based on the clunky 8PDT switches that are
generally referred to though; they were small circuits hand-built onto
perfboard, containing 3 chips (all of them triple analog switches). This
achieved the effect of having an 8-ganged switch by applying a digital
signal via a common (and stylish) SPDT switch.
That became too tedious, and I was able to partner with somebody to make
the Kisado's... and the rest is history.
All of the subsequenet posts on the subject of adapters or cartridge
pinouts are based on my early work, and in some cases they were mere
re-posts of earlier posts (at some point, errors crept into the postings).
I don't mean to say that Karl Steneraud and Earnest Rymer didn't do any
work, or that they don't deserve credit for posting information on the
turbo-list in the mid-90's.
There were some other people who did some specialty work, like Joe LoCciero
who discovered the Japanese "lockout pin" (for inhibiting US games), Jerry
DaSilva who mapped out the remaining pins on the cartridge port, Keith Lee
who posted information about modifying PCE GT's, and Lawrence Wright who
posted detailed pictures about several of these mod's.
I just got the sense from this post that my efforts were about to be swept
into the dustbin of history.
Just wanted to set the record straight.
- Dave