{"id":16606,"date":"2024-03-06T21:12:24","date_gmt":"2024-03-06T20:12:24","guid":{"rendered":"http:\/\/www.intexsound.de\/Commodore-Museum-Mannheim\/?p=16606"},"modified":"2024-03-28T13:04:25","modified_gmt":"2024-03-28T12:04:25","slug":"modem-1200-model-1670","status":"publish","type":"post","link":"https:\/\/www.intexsound.de\/Commodore-Museum-Mannheim\/2024\/03\/06\/modem-1200-model-1670\/","title":{"rendered":"Modem 1200 [Model 1670]"},"content":{"rendered":"

Modem 1200 [Model 1670]<\/strong><\/p>\n

The Commodore 1670, also known as the \u201cModem\/1200\u201d, is Commodore\u2019s first Hayes-compatible modem: It connects directly to the phone line and supports pulse and tone dialing for 1200 and 300 baud duplex connections. There were two revisions, the original 1670 and the \u201cnew\u201d 1670, a.k.a. CR-1670. (The unit in this article is the later revision.)<\/p>\n

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Historical Context:
\n<\/strong><\/p>\n\n\n\n\n\n\n\n\n
Year<\/th>\nName<\/th>\nModel<\/th>\nDescription<\/th>\n<\/tr>\n<\/thead>\n
1982<\/td>\nVICMODEM<\/a><\/td>\n1600<\/td>\nconnected to phone\u2019s handset connector; manual dialing through phone; Motorola MC14412<\/td>\n<\/tr>\n
1982<\/td>\nAUTOMODEM<\/a><\/td>\n1650<\/td>\nconnected to phone line, pulse dialing in software; Motorola MC14412<\/td>\n<\/tr>\n
1985<\/td>\nMODEM\/300<\/a><\/td>\n1660<\/td>\nadded tone dialing support by feeding SID output into modem; Texas Instruments TMS99532A<\/td>\n<\/tr>\n
1987<\/td>\nMODEM\/1200<\/a><\/td>\n1670<\/td>\nHayes command set; pulse and tone dialing in hardware; 300\/1200 baud support; U.S. Robotics chipset<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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On the back, there are:<\/p>\n