From: Raymond C. Bryan (raycomp_at_visi.com)
Date: 2002-06-03 06:38:55
>In addition to the model number, the 1660 and 1670 modems have a part
>number on the bottom right of the label on the back. In addition the 1660
>modems have a name on the circuit board.
>The 1600 modem (VicModem) appears to be a 600 baud modem, but mine
>isn't working, so
>I can't verify that.
The 1600 was only 300 baud so far as I ever saw; the 1650 was 300
baud and had many clones including the Total Telecom Modem and the
Hesmodem.
>
>The later modems use 2 80C49 microprocessors and what looks like a ROM.
>Since these are custom parts, I have listed all the markings on the chips.
>It looks like these were made by US Robotics. (A 80C49 is a 8 bit
>microprocessor with 128 bytes of RAM, 2K ROM, and 24 quasi bidirectional
>I/O lines).
>
>I don't have any information on the 1650 modem. There may also be
>310476-03 and 310476-05 versions which I do not have.
--Ray
--
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|Raymond C. Bryan 651-642-9890 vox | The battle is sometimes |
|Raymond Computer 651-642-9891 fax | to the small for
|
|795 Raymond Ave -email: raycomp | the bigger they are |
|St Paul MN 55114 @visi.com | the harder they fall. |
|USA Amiga - Commodore | -- James Thurber -- |
http://www.raymondcomputer.com
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