Spacewar! (was Re: Laser display...)

From: Eric Smith <>
Date: Sun Feb 20 19:04:26 2005

>> I disagree. It'd definitely partly digital.
> Okay, in what way(s)?

The signals that are used for the paddles are the AND of two
digital signals that have pulses for the X and Y position of
the paddle. Those are digital signals (though generated by
one-shots), and the AND gate that combines them is also clearly

And aren't the horizontal and vertical timings generated by
digital counters from a main oscillator? It's been so long since
I've seen the schematic of an Odyssey that I don't recall, but
I can't see how they could generate acceptably stable video
with only inexpensive analog timing elements.

Received on Sun Feb 20 2005 - 19:04:26 GMT

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