Repro Cromemco joysticks...
wh.sudbrink at verizon.net
Tue Sep 18 18:29:18 CDT 2007
I want to build a couple of reproduction (work alike) Cromemco
joystick consoles for two reasons:
1) I don't have any real ones.
2) I'll be able to let the "unwashed masses" (my children
included) play various games with worrying about them
To this end, I've looked at the pdf of the manual and (to my
delight) discovered that I have all of the required parts.
Well, almost. Two things:
1) The manual calls for a 45 Ohm QUAM speaker. All I have
are plain old run-of-the-mill 8 Ohm internal PC speakers.
My ignorance of basic electronics shines through...
30 minutes of googling and I'm not sure what QUAM means.
Anyway, can I substitute the speaker? With some modification
to the schematic?
2) The manual does not specify the pot values on the joystick.
The joysticks I have have 100K Ohm pots (thanks Tim Shoppa!).
Is that value correct? Is the value important? Can I adjust
for it on the D+7A or in the circuit on the joystick side?
Also, an esthetic question: are the joysticks on the original
Thanks for any help!
BTW: Both manuals (joystick console and D+7A card) are in
the Harte repository.
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