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P > PROLOGICA > CP-200   


The CP-200 and CP-200S computers were Brazilian clones of the Sinclair ZX81.

However, to compete with the original model and local ZX81 clones, CP-200 models featured several enhancements.

The larger case housed the power supply unit and a slightly better rubber keyboard. Basic versions had 16 KB of RAM as well as a joystick interface cabled in parallel with some keyboard keys. The BASIC interpreter also had some improvements and additional commands.

The CP-200 also had one very unique characteristic being that the video display was inverted (white on black instead of black on white for the ZX-81). Any key pressed on the keyboard generated a "beep" sound coming from the buzzer (his only function).

The bus connector wasn't strictly Sinclair compatible (pinout was different), but an adaptor card (?) allowed all Sinclair and third companies peripherals to be used with both CP-200 models.

The CP-200s was the same computer but with a redesigned motherboard in a new smaller (hence the "s"?) plastic case. The goal was maybe to reduce the production costs.


Contributed to this article : Paolo F. Pugno, Oscar Arthur Koepke

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I worked in the laboratory of Nova Eletrônica magazine and later in the engineering of the Pological. The CP200 project was a lonely and discredited initiative, in an attempt to slow down on the NE-Z8000. Since the Nez-8000 software was identical to the ZX81, it was just to reproduce the logic of the ZX81 that the slow would work. The problem was that the ZX81 had a dedicated chip hardware, which made work difficult. I worked for several weeks, in a parallel work, with many tips of tests of a logic analyzer HP plugged into a ZX81 and numerous matrix print leaves with the "Disassembler" of the original ROM code. In the end the circuit came out. It was not the identical logic and totally compatible with that of ZX81, but it worked. In the newer versions of CP200 this logic was revised, which made it more compatible with the original. I even implemented the logic in several NE-Z8000, but the marketing decision was to launch a new computer, the CP200. This was my last project still in the magazine Nova Eletrônica. After completing the CP200, I was invited to work at Itautec, which was about to launch the i7000. A few years later I was invited again to return to the group of companies to which the magazine belonged, only this time in Prologic. In my blog I tell these and other stories of my work period in the new electronics and prological.

Friday 10th February 2023
Everaldo R. Lima (Brazil)

I learned some BASIC on one of these. I was about 10 years old, and lost interest mainly because one had to load programs through a cassette tape. I would spend 20 min or more hoping the tape wasn''t damaged and the cassette player had a clean head. If everything went fine I would be able to run a program. If not, it would fail silently. Another option was of course writing programs from scratch before using, but... that was painful.

Monday 16th April 2018
Daniel Vianna (Australia)

I had one and experimented a lot with it. Its side connector does not follow the Sinclair pinout, so you cannot plug standard Sinclair peripherals to it. I had to build a re-layout board just to attach a ZX Printer to it, and it workerd flawlessly. I don't know if the CP-200S also has this characteristic...

Tuesday 21st November 2006
Paolo F. Pugno (Brazil)


NAME  CP-200
TYPE  Home Computer
ORIGIN  Brazil
YEAR  1982
KEYBOARD  43-key rubber keyboard
SPEED  3.25 MHz
RAM  16 KB
VRAM  Unknown
TEXT MODES  32 chars x 24 lines
GRAPHIC MODES  64 x 44 (big) dots
COLORS  Monochrome
SOUND  No sound
SIZE / WEIGHT  approx. 18 (W) x 10 (D) x 3 (H) in / 2 lbs
I/O PORTS  RF TV video output (channel 3 VHF), tape recorder In/Out, Bus connector, joystick
POWER SUPPLY  Built-in power supply unit
PERIPHERALS  All Sinclair extensions and peripherals
PRICE  Unknown

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