WHERE OLD COMPUTERS ARE WELCOME
| Name | 2200 Type 2 |
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| Manufacturer | Datapoint Corp. (Computer Terminal Corporation) (USA) | Type | |
| Production start (mm-yyyy) | 1974 | Production end (mm-yyyy) | - |
| RAM | 4K-8K-12K-16K RAM (1-4 memory boards, 4K each). | ROM | |
| CPU | Custom Chip - 1.2 Mhz | ||
| Operating System | Datapoint CTOS (Cassette Tape Operating System), Datapoint DOS 1.0-1.2, and later ran DOS.A, DOS.B, and/or DOS.C | ||
| Text (Cols x Rows) | 80 x 12 | ||
| Graphics | None | ||
| Sound | Beeper | ||
| Storage memory | Tape 150Kb per side, 350 cps x 2 | ||
| Serial port | RS-232 | Parallel port | |
| Others port | 50-pin I/O bus | ||
| Original price | Currency original price | ||
| Units sold | |||
| Note | The Version 2 2200 used the 74181 ALU (but only partially), did not implement all the features as there was no room left on the board. It ran at 2MHz. The Intel 8008 was originally developed by Intel as a custom chip for Datapoint (Intel didn't believe there really was a significant market for a general-purpose microcomputer-on-a-chip! ... they wanted Datapoint's memory business!), and implements (almost) exactly the Datapoint 2200 instruction set. The reason Intel to this day uses LSB/MSB byte order is because the Type 1 2200 used a serial shift register memory, and that allowed propagating carries from LSB to MSB without requiring the memory recirculate around to the previous byte. It's also notable that the 2200 (and 5500 and 6600) did not use a raster scan CRT display, but instead Datapoint's patented "diddle scan" technique which permitted (in the earlier machines) using a serial shift register memory for the CRT refresh memory. |
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| Configurations | A 16K Type 2 2200 processor in 1972-1973 sold for a little over $14,000. | ||
| User | webmaster | ||
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