I kept running into an issue of coming up with ideas that required the use of a second user port on Commodore machines.
Turns out that someone makes an expander to that end. Right on.

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I kept running into an issue of coming up with ideas that required the use of a second user port on Commodore machines.
Turns out that someone makes an expander to that end. Right on.

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Commodore VIC-20 pulse dialer demonstration.
From the Commodore Modem 300 (Model 1660) User Manual
Just in case any of you were wondering, the code snippet for going on-hook on a VIC-20 is incorrect. It should read: poke oh,(peek(oh) or hi), just like the C64/C128 section. This typo has fucked me over for almost a decade, and it was printed 31 years ago.
Now that I’ve found and corrected the mistake in my code, my VIC-20 auto pulse dialer works now, just like the C64 version.
After a few hours of trial and error, plus some tests with modified code for a C64, my phone dialer program works. It isn’t polished yet, but it is coming along nicely. I’ve performed a few test calls, and it pulse dials out correctly for 10 digit numbers. The test call here includes a call progress display to aid in debugging -- each circle indicates an outgoing pulse. I’ve programmed the entire thing on my C128D for the sake of programming ease that comes from 80 columns.

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altruistech replied to your post:altruistech replied to your photo:Jackpot:...
So if not to be coupled with a modem, why would they make or brand a phone? I need to know more about this now! :)
It’s definitely a Northern Telecom phone branded with Commodore. While they made may things over the decades, Commodore never made phones... that I’m aware of.
My guess is it’s to plug into the port marked “phone” on a Modem 300
Because it would look damned good.
Commodore Modem 300