CRISS CP/M 8-bit Homebrew DIY Computer (AVR based)

The project is growing, more and more computers are appeared in the world! For you new logic game: MEMO! You have to find and open double cards. This version has 3 levels and some amazing features like flying cards!

A perfect example how the pseudo-graphic symbols may be used! Pascal source codes are included.

Video with the game is coming.  

Starting from the CPU uC firmware 4.64 custom OS images may be used and one was built from the original sources of the CP/M 2.2 from Digital Research Corp. Because CRISS has in-built BIOS support the new release provides 55 Kb TPA memory! All sources for the OS boot image are available, please download upgrades from www.criss.fun  website! Don't forget to upgrade CPU uC to version 4.64. OS starts now from the address DF00h! 4 virtual 720 Kb floppy drives (A-D) are supported. Hitech C and Janus ADA are now compiling fine without the leak of the RAM problem! New videos with ADA testing for the Youtube channel are preparing and will be available soon.

Fantastic, really? Coming very soon: next step memory optimized CPM 2.2 and CPM 3.0 support! Please follow!

That's really cool: internal settings allow to monitor and control what is happening with your CRISS computer over the LAN! For example you'll see what your kid is doing and will be able to help him remotely! You can monitor not only from the Windows computer but also from the another CRISS CP/M computer!

New set of firmware files are available at the project support web site. Version 4.62 MCPU, 1.22 for the Peripheral controller, 0.21 for the VGA controller. Main improvements are:

• mouse support is fully incorporated in the "programmers" and "auto" mode (when mouse movements and clicks are converted to key pressing that allows to use mouse in old programs)
• "mixed" video mode when each line is based on a separate symbol set is added
• VGA sleep mode is implemented
• GPIO stability was slightly improved
• some new IOBYTE settings were implemented

Next generation will come with improved LAN support and more attractive features! Coming soon!  Didn't order you Christmas gift yet? Why? Do it now!!! If there is no in the stock just write me an email! 

Final release of CRISS CP/M LPT adapter is ready and is testing now.  Hope that it is pre-alpha release. Next firmware will come with the LPT support! Alternatively the adapter can be used as 24-lines GPIO.

LPT-port support becames standard option: adapter is mounted inside the DB25 socket. Now the full version of the CRISS MPS adapter looks like one on the picture (pre-release version): MPS socket combines keyboard, RS-232 and LPT. After finishing testing PCB and schematic will be published here. Now versions of the firmware will come with LPT support. LPT also can be used as standard 24-port GPIO.

CRISS CP/M support site www.criss.fun news: User's guide is coming!

Technical and programmer's reference is preparing, coming soon! Don't hesitate to contact me if you need DIY kit!

In order to support DIYers on the support website www.criss.fun special sections FAQ and How to are added. Please send info requests and questions by email!