[Coco] Wanted: Hi Res Joystick Adapter
Mark D. Overholser
marko555.os2 at gmail.com
Thu May 23 00:41:18 EDT 2019
On 5/22/19 4:58 PM, Mark wrote:
> Thanks Mark O for the hi res joystick schematic,
> I can follow most of it and think I can eventually replicate it, but I
> cannot follow what is being shown on the bottom part of the schematic,
> in particular:
> A) what are the 9 Dots at the bottom of the schematic for? Is that
> supposed to be representing a switch? Why is it even there, Really
> stumping me...
Looks like a Switch to me.... I'm sure Robert Gault can "shed some
light" on it...
> B) Also what are the Blue "#1" and Blue "#2", off the Lm3900m supposed
> to be connected too? The cassette or joystick port or nothing or both?
> I still learning schematics, i get capacitors, resistors, etc, but the
> above two things don't make sense to me.
The DataSheet for the LM3900N show the 1 & 2 are connected to the Output
for Channels 3 & 4 ( Determining Pin Out by locating the Gnd and Vcc )
Which are probably connected to the Cassette Port, but I haven't
> Thanks in advance
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