We built a trainer which dave designed around the rca cosmac cdp1802 microprocessor. Although the 1802 is now more than 30 years old, it continues to prove itself in many industrial and commercial applications. Overview the cdp1802 test board is intended to test the working condition of rca cdp1802 cosmac and compatible cpus. That certainly had information critical to making the plm compiler work. Rca also released the cdp1861 video display controller, which integrated with the 1802 to. Implementing forth on the rca 1802 a 40yearold resourcestarved processor architecture harold rabbie november 2014. Rca cdp180x cdp1802 cpu test board users manual 2015sep11 ver. Manual, the user should refer to the following publications. Cdp1802a, cdp1802ac, cdp1802bc rca cdp1802 computing.
I checked back on occasion but no progress seems to have been made. Rca 1802 cdp1802 is an 8bit microprocessor, and it was one of the first, if not the first, cmos processors. Files are available under licenses specified on their description page. The 1802 is interesting for a number of reasons, not the least of which is the fact that it uses static cmos circuitry, meaning it has no minimum clock frequency. The card contains a cdp1802 cpu, a crystalcootrolled clock, readwrite memory, parallel 110 ports, a serial communications interface, poweron reset, and expansion interface. The 1802 had low power consumption, wide range of operating voltages and military operating temperature range. It looks the same as the vp3301 terminal in the rca development system. Cdp18s601 rca cosmac microboard computer the rca cosmac microboard computer cdp18s601 is a versatile computer system on a single 4. The cdp1802 family of cmos microprocessors are 8bit register oriented central processing units cpus designed for use as general purpose computing or control elements in a wide range of stored program systems or products. Evaluation kit manual for the rca cdp1802 cosmac microprocessor. The rca cdp1802 cosmac microprocessor is a onechip cmos 8bit registeroriented central processing unit introduced in 1976. The processor was developed in new jersey, but the kit itself came out of the rca palm beach division. User manual for the cdp1802 cosmac microprocessor bitsavers.
Please support the author and do not share your copy of this book online. The rca cdpi802 microprocessor is a powerful and efficient single chip 8 bit. It has flexible programmed io and programinterrupt modes. Rca studio ii and studio iii home tv programmer emulator ajavamindrcastudio2. Another early 8bit microprocessor was the signetics 2650, which enjoyed a brief surge of interest due to its innovative and powerful instruction set architecture. The rca cdp1802 aka rca cosmac is an 8bit low power microprocessor introduced by rca around mid 1970s. The cdp1802 types include all of the circuits required for fetching, interpreting, and executing instructions which have. Rca cosmac 1802 and 180x test boards for sale the cpu. The cdp1802 cosmac microprocessor, was introduced and popularized by rca in the 1970s and 1908s.
Another excellent book is the programmers guide to the 1802 by tom swan, which may be purchased in pdf form directly from the author. Rca studio ii and studio iii home tv programmer emulator ajavamind rca studio2. Hardware description languages like vhdl and verilog can describe functionality for hardware for. Mpm202 timesharing manual for the rca cdp1802 cosmac microprocessor mpm203 evaluation kit manual for the rca cdp1802 cosmac microprocessor mpm206 subroutine library for rca cosmac microprocessors mpm208 operator. Highreliability cmos 8bit microprocessor datasheet the cdp1802a3 highreliability lsi cmos 8bit register oriented centralprocessing unit cpu is designed for use as a general purpose computing or control element in a wide range of storedprogram systems or products. Rca cosmac was the first to implement cmos technology. The rca vp3301 terminal keyboard unit is itself an rca 1802 product, probably with rca s cdp1869 and cdp1870 video chip set. Microprocessor products cdp1802 cdp1802c types features.
This is the first commercial microcomputer from rca to contain the twochip cosmac microprocessor tc 1084 tc 1085 version. From the collection, a scannedin computerrelated document. But how would a time warp of 37 years from 1976 to 20 affect performance. Rca 1802 microcontroller first manufactured in 1976 static cmos technology new at the time very low power 10 mw at 3. A seminal microprocessor in the world of spaceflight was rcas rca 1802 aka cdp1802, rca cosmac introduced in 1976, which was used on board the galileo probe to jupiter launched 1989, arrived 1995. Microprocessor products cdp1802 cdp1802c types cosmac elf.
The 1802 represented the majority of cosmac production, and today the entire line is known simply as the rca 1802. Probably the first 8bit cmos processor, introduced about 1976. All structured data from the file and property namespaces is available under the creative commons cc0 license. The cdp1802 family of cmos microprocessors are 8bit register oriented. Build the cosmac elf a lowcost experimenters microcomputer. In 1976 a team of rca engineers led by jerry herzog released their second microprocessor the cdp1802.
The cosmac is an 8bit microprocessor family introduced by rca. The cdp1802a3 includes all of the circuits required for. It was one of the first cmos designs, and continues to be made to this day by intersil. A while back i noticed a photomicrograph of a cdp1802 chip and it appeared that the goal was to produce a simulation like they had done for the 6502. Rca cdp1802 microprocessor, running at a scorching 1. Hardware description languages like vhdl and verilog can describe functionality for hardware for implementation into fpga and asic. Coupled with 2k rom, 512 bytes ram, and a 64 x 32 pixel monochrome graphics chip, the studio ii was underwhelming even back in 1977. The cdp1802 test board is intended to test the working condition of rca cdp1802 cosmac and compatible cpus. Trademarks registereda marcas registradas foreword the rca cdp1802 cosmac microprocessor is a, following publications. The above routine presumes that the cdp1802 microprocessor is in an initial reset. In april 2017, i acquired my own rca vp3303 terminal. Nehl solidstate division microprocessor products cdp1802 cdp1802c types features. The first production model was the twochip cdp1801r and cdp1801u, which were later combined into the singlechip cdp1802.
It is historically notable as the first cmos microprocessor. The heart of the elf microcomputer is the new rca cdp1802. Cmos microprocessor architecture cdp1802a cmos microboard computer module cdp18s601 cmos microboard memory and tape io module cdp18s652 rombased basic 3 interpreter with full floatingpoint. The cdp1802 microprocessor is very interesting cpu. Rca s microdos for the cdp1802 when someone at the cosmac elf list noticed a diskette for the plm compiler for the 1802 on ebay, i was surprised that no one mentioned anything about the diskette and manual. The rca cdp1802 cosmac microprocessor is a onechip cmos. Rca cdp1802 microprocessor 91 instructions 2048byte ram builtin hex keyboard modern reliable touchpad type graphic video display interface standard video output 100bytepersecond au dio cassette interface regulated power supply wallpack type crystal clock sound circuits for signal tones and games 512byte rom operating. Mar 02, 2018 the computer instruction set is a subset of what would become the rca cdp1801 and cdp1802 microprocessor instruction set. Rca cosmac microboard computer development systems mcds rcas lowcost microboard computer development system mcds cdp18s693 combines. He often told us there was a version that was radiation hardened and it was being used in satellites and minuteman guided missiles icbms. It is compatible with the cdp1802 microprocessor and will interface directly with the cdp1802 as shown in the system diagram fig. Cosmac complementary symmetry monolithic array computer 40lsi 8 cmos. Apr 03, 2018 rca 1802 cdp1802 is an 8bit microprocessor, and it was one of the first, if not the first, cmos processors. The cdp1802 was the first microprocessor with a register bank.
When someone at the cosmac elf list noticed a diskette for the plm compiler for the 1802 on ebay, i was surprised that no one mentioned anything about the diskette and manual. It used rcas cmos process called cosmos complementary siliconmedialoxide semiconductor. So since i once had some courses on vlsi design and. The cpu used for this project is the rca 1802, best known for being the smarts in the cosmac elf, a very early microprocessor training computer, but still capable of teaching the basics of. This collection contains extensive documentation of rcas consumer and industrial products, such as radios, televisions, microscopes, record and video players, test equipment, and phonograph records. The computer instruction set is a subset of what would become the rca cdp1801 and cdp1802 microprocessor instruction set. The cdp1802 test board is designed to function test the 1802 as well as its enhanced versions. To put things into perspective, the ti83 calculator introduced in 1996 operates at 6 mhz and has 32 kb of ram. The system was sold as a singleboard personal computer, with two hexadecimal led displays, 8 toggle switches, and 256 bytes of ram. The chip can use any combination of standard ram and rom devices and can address up to 65,536 65 k bytes of memory. The home tv programmer was designed by the rca distributor and special products division and is being manu factured at the rca plant in swanna. Rca cosmac 1802 and 180x test boards for sale the cpu shack.
Jan 23, 2020 the cdp1802 was the first microprocessor with a register bank. Back in 1985 i attended a night school class taught by the late dave lang at the community college in wanganui, new zealand. Cosmac video interface processor cdp18s711 is a complete computer on a single on the display screen and move them around. Mar 06, 2012 the rca cdp1802 cosmac microprocessor is a onechip cmos 8bit registeroriented central processing unit introduced in 1976. The board consists of the base components of rca cdp1802 test system. So most of the time are spent on monitor program coding. It has a serial connection to the development system. User manual for the cdp1802 cosmac microprocessor cosmac microboard computer systems appears to be a flyer of some sort microprocessormemory applications briefs a compendium of the most useful cdp1800 series microprocessormemory application hints that have appeared in recent issues of the rca solid state newsletter. It employs an rca cdp1802 cosmac microprocessor and other solid state devices which are produced by the rca solid state division. The cpd1802 was the single chip successor to the earlier two chip 1801 design. System 00 used an oscilloscope for a video display and supported a resolution of 32 x 32 pixels display memory is 128 bytes. Very interesting design that let you choose any register pair. The 1802 actually, a specialized version of the architecture was the first cpu vs processors made from discrete components to enter space if its a space probe from the 80s, it probably had an 1802 onboard. A seminal microprocessor in the world of spaceflight was rca s rca 1802 aka cdp1802, rca cosmac introduced in 1976, which was used on board the galileo probe to jupiter launched 1989, arrived 1995.
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