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CRISS CP/M computer v.4.59 beta

05.10.2021 Обновлена микропрограмма МК ВГА / New firmware for the VGA MCU with video sleep mode!


CRISS CP/M - Modern DIY CP/M Computer!


Meet the CRISS CP/M: the modern single-board 8-bit full-featured personal computer! Amazing functionality for the DIY device: it is not a toy, it is REAL Computer, the best DIY computer you can imagine, the SAFEST computer in the world and the sophisticated control platform for your projects!

Basic characteristics:

  • CP/M operating system: many programming languages, games, text editors, spreadsheets, databases;
  • Instruction system: Z80 (Zilog) in emulation mode, register-register command execution speed 1 μs;
  • RAM: SRAM 64Kb;
  • Video adapter: VGA, monochrome, alphanumeric up to 25x80 characters, switchable character tables, graphic 160x96 pixels;
  • Storage: SD-card, support for 819 KB floppy images, etc .;
  • Keyboard: standard PS/2 keyboard}, local and LAT layouts;
  • Printer: standard with serial interface;
  • Communication interfaces: RS-232, system UART;

Really cool? But it is not the end of the list, there are also available:

  • Real time clock with the backup battery;
  • Ethernet controller;
  • Single-tone music generator with built-in amplifier and speaker;
  • GPIO support - up to 128 digital I / O lines (as external I2C block);
  • LPT-port support.

CRISS CP/M has its own settings, but it can emulate other hardware platforms and terminals emulation, for now it supports Robotron 1715 (RU and EU versions), Kaypro II/ADM and TRS-80!

Open architecture and several "User exits" give the unlimited development opportunities!

Power supply: AC 120-230 V 50-60 Hz. SIngle box 140x110x35 mm size, PCB size 100x130 mm.

And what absolutely unbelievable: only DIP components! Anyone can solder it, detailed video how to do it available!

CRISS CP/M - modern DIY(!!!) computer for entertainment and more! Don't forget to visit and like the project page at HACKDAY.IO!

Do NOT doubt! Order your DIY kit right now!

3 Workplace

2 CRISS CP/M Computer

3 CRISS Board


Detailed description of the computer is published in Russian "Radio" Magazine, No. 1-6, 2021. It is 100% open hardware project!

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For the subscription issues, please contact the Publishing House, the website of the magazine is

If you need any additional info in English, please emai requesrl to, subject CRISS.


On any questions, orders, comments, requests, please email us, subject CRISS.

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