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Circle M Systems

133 orders since Aug 03, 2021

Calgary, AB, Canada

Custom Work Available

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Overall Rating:

Review Breakdown

5
8 4
1 3
0 2
0 1
0

Average Ratings

Product: (5.00)

Documentation: (4.89)

Shipping: (5.00)

Communication: (5.00)

All Reviews

John | Aug. 2, 2024

Exceptionally cool and well-constructed little CP/M computer

For MinZ-C : Small Cased 33 or 36 MHz Z180 with CP/M

EXACTLY as described, exactly as I had hoped it would be. One thing that would make this even more valuable for an inexperienced CP/M user like myself would be instructions on how to upgrade the OS to CP/M 3. Other than that, pretty much perfect. I've already had hours of enjoyment with it, and I'm just getting started.

Thank you very much Circle M Systems!
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Response from Circle M Systems | Aug. 2, 2024
Great to hear that you're enjoying your system.

As a clarification: Although a bootable CP/M-3 system is not included, the CP/M-2 BIOS source and all of the Digital Research manuals for CP/M-3 are included as are various implementations of CP/M-3 on other systems.

Steve | May 18, 2024

Brilliant way to experience 70s technology

For MinZ-C : Small Cased 33 or 36 MHz Z180 with CP/M

What a great way to rekindle the enjoyment of 70s/80s technology, back when when we had to want to use a computer to have them and they were not all consuming part of our lives.

It works as described, simple to set up, comes with what you need, easy to use if you are willing to learn the vagaries of CP/M (this is a positive comment by the way).

Runs the critical applications that I have downloaded and thrown at it: (ZORK, WordStar, etc)

I never had a CP/M or z80 system growing up and wanted to experience that technology. I have yet to motivate myself to load and run retro tech emulators on my PC or Raspberry Pi's so took the plunge to get this turnkey system based on the z80 family (Z180 chip). I have been teaching myself z80 based assembly, and re-acquainting myself with the joys(?) of 80's era BASIC programming.

I have been in IT for very close to 40 years, and it long ago became purely business and work. This device and working with IC's and old OS's again is my way of reclaiming the feeling of why i caught the computer bug in the late 70's.

To the developer, my thanks.

James | Feb. 27, 2024

Awesome little system

For eZ-Tiny: A Very Small Cased eZ80 System at 18 MHz

This is an excellent little system, and far more capable than it has a right to be.
The documentation data included with the sdcard is also amazingly complete.

Evgeny | June 27, 2023

Super happy to get this kit

For MinZ - Z180 System with 512 KB at 33/36 MHz

Received the kit along with all the necessary electronics and documentation in no time. Super nice customer service. Wealth of information on the kit, its electronics, CP/M and much more. High quality. Very happy with what I got for the money. Much recommended.

With all the wealth of extra information like BYTE journals and whatnot, I'm really looking forward to a lot of fun playing with it.

Terry | May 10, 2022

Great value and quality

For MinZ - Z180 System with 512 KB at 33/36 MHz

Wonderful device. I'm back in the 70/80's now writing programs and using CP/M :)

So much software is still freely available for this. Well worth the money
Excellent quality and arrived here in no time

Great product and service.

Terry | May 10, 2022

Bloody marvelous and great fun!

For MinZ-C : Small Cased 33 or 36 MHz Z180 with CP/M

Wonderful product. Fired up right away after I installed the AC0/AC1 drivers on my Windows 11 Machine

A great trip down memory lane. Well built and supported. Programs and source code included.

Too much fun! :)

Joey | April 23, 2022

AWSOME and INNOVATIVE PRODUCTS!

For eZ-Tiny: A Very Small Cased eZ80 System at 18 MHz

Awesome products!
These Circle M products (eZ-Tiny and minZ-C) are excellent products and have exceeded my expectations in all regards. They are such a small footprint (approximately 2x2 inch precision and high-quality, good-looking case) yet are so powerful, and effective CP/M 2.2 based computers (not kits) using Zilog ICs. Each booted right up after configuring my terminal emulation settings on Windows 11 OS ( I tested and used Putty and HyperTerminal software on Win 11 which were effective for my purposes). Very easy to use , full featured, including outstanding , clearly stated documentation on included SD card (and (README.txt) that has awesome amount of CP/M files and resources!. File transfer from Windows 11 to CP/M 2.2 worked as documented and was effective and easily accomplished via HyperTerminal product. I am still exploring and enjoying all these products have to offer. I am very happy with my purchases from Circle M, a responsible and attentive designer, producer and seller on tindie. I have found this seller to be honest, considerate and helpful throughout the complete transaction even afterwards!. Could not be happier with my purchases with them! Kudos to Circle M and congratulations on your high quality standards and effective products for the retro hobbyists.

Joey | April 23, 2022

Awesome products!

For MinZ-C : Small Cased 33 or 36 MHz Z180 with CP/M

These Circle M products (eZ-Tiny and minZ-C) are excellent products and have exceeded my expectations in all regards. They are such a small footprint (approximately 2x2 inch precision and high-quality, good-looking case) yet are so powerful, and effective CP/M 2.2 based computers (not kits) using Zilog ICs. Each booted right up after configuring the terminal emulation settings(I tested and used Putty and HyperTerminal software which were effective for my purposes). Very easy to use , full featured, including outstanding , clearly stated documentation on included SD card that has awesome amount of CP/M files and resources!. File transfer from Windows 11 to CP/M 2.2 worked as documented and was effective and easily accomplished via HyperTerminal product. I am still exploring and enjoying all these products have to offer. I am very happy with my purchases from Circle M, a responsible and attentive designer, producer and seller on tindie. I have found this seller to be honest, considerate and helpful throughout the complete transaction even afterwards!. Could not be happier with my purchases with them! Kudos to Circle M and congratulations on your high quality standards and effective products for the retro hobbyists.

Dale | Aug. 9, 2021

So Sweet - I Love it!

For MinZ-C : Small Cased 33 or 36 MHz Z180 with CP/M

I had this booted up and was writing my first MBASIC program in about 60 seconds.
I begged my Dad to buy me the original Altair kit as a high school student -- no luck.
Now at last I have a 8080/Z80 CP/M system to play with (and it takes practically NO space on my crowded desktop).

Thanks for your efforts! A job extremely well done. Good luck with it.
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