Subject to status and availability in your area, Terms and Conditions apply. The RCA CDP1802 COSMAC microprocessor is a one-chip CMOS 8-binary option london register-oriented central processing unit introduced in 1976.
Although the 1802 is now more than 30 years old, it continues to prove itself in many industrial and commercial applications. RCA produced a number of documents related to the COSMAC series of processors. I’ve scanned several articles from 1970’s-era issues of RCA Engineer magazine. You can see the scans here. The following are news releases regarding software and development capabilities related to the 1802. The program, GRUTIL, will provide 1802 users with the capability to load a program from an external source such as a Teletype keyboard, paper tape or a timesharing system.
Telford Road, Bicester, Oxon, OX6 0UL, UK. Both systems, the RAL-II Level-II assembly language and the C-MAC macroassembler, are designed to cut development time. The RAL-II assembler, provided with the RCA’s floppy-disk system, allows the assembly of COSMAC Level-II assembly language. Solid State Europe, Sunbury-on-Thames, Middlesex, Englanhd.
Solid State Europe, Sunbury-on-Thames, Middlesex, England. RCA Solid State Europe, Sunbury-on-Thames, Middlesex, TW16 7HW, UK. The Microtutor, introduced in 1976, came in a custom box and was made up of the main circuit board, two plug-in boards, an AC power adapter and two manuals. The manuals in this particular box are actually the same core text, just different covers and title pages.
The output is a pair of hexadecimal LED displays. The plug-in COSMAC CPU card contains the two integrated circuits that make up the 1801 processor, introduced in 1975. Click here for an in-depth magazine article on the Microtutor from 1976. 1977, is similar to the more common COSMAC Elf. Programs are entered via toggle switches and a two-digit LED display serves as the output device. Eight switches along the bottom allow direct entry of a hexadecimal value.
A pushbutton switch IN enters the value. The CDP1802CD microprocessor with what looks like a date code from 1977. 1024 bytes of RAM, a hex keypad, a cassette interface for storing and retrieving programs, and a video interface. You can see more photos by clicking here.
The Microterminal is a low-power, low-cost, small-size, non-hard-copy alternative to conventional teletypewriter or similar terminals. Click here for a PDF of the RCA COSMAC Microterminal. Netronics in Connecticut also offered a COSMAC system. This advertisement is from the May-June 1978 issue of Creative Computing magazine.