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8-Bit-Force

374 orders since Aug 21, 2019

24 Reviews

Sunnyvale, CA, United States of America

Ships from United States of America.

RetroShield 6502 for Arduino Mega

RetroShield 6502 for Arduino Mega

8-Bit-Force

$18.00

RetroShield Z80 for Arduino Mega

RetroShield Z80 for Arduino Mega

8-Bit-Force

$18.00

Teensy Adapter for RetroShield

Teensy Adapter for RetroShield

8-Bit-Force

$18.00

RetroShield 6809 for Arduino Mega

RetroShield 6809 for Arduino Mega

8-Bit-Force

$18.00

RetroShield 1802 for Arduino Mega

RetroShield 1802 for Arduino Mega

8-Bit-Force

$18.02

RetroShield 8085 for Arduino Mega

RetroShield 8085 for Arduino Mega

8-Bit-Force

$18.00

RetroShield 2650 for Arduino Mega

RetroShield 2650 for Arduino Mega

8-Bit-Force

$28.00

RetroShield 8031 for Arduino Mega

RetroShield 8031 for Arduino Mega

8-Bit-Force

$18.00

RetroShield 6803 for Arduino Mega

RetroShield 6803 for Arduino Mega

8-Bit-Force

$18.00

RetroShield 4004 for Arduino Mega

RetroShield 4004 for Arduino Mega

8-Bit-Force

$40.04

About

An electrical engineer who grew up during 1980's and spent much of his childhood hacking commodore computers. Now building 8-bit microprocessor projects and helping people learn microprocessors & assembly programming.

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Reviews

Review Breakdown

5
16 4
6 3
2 2
0 1
0

Average Ratings

Product: (4.96)

Documentation: (4.46)

Shipping: (4.79)

Communication: (4.75)

Davi | March 21, 2023

Very Happy with the Purchase

For RetroShield 6502 for Arduino Mega

Simple and good kit to get started with 6502. Assembled the kit and tried k65c02_apple1.ino, things didn't worked. Didn't got the prompt (\) and no response to serial input. With some debugging and adding 5 microseconds delay after clock high and another 5 microseconds delay after clock low, things got working. Hooked up digital analyzer to understand the timing to figure out the difference. Overall good experience (debugging was the fun part).

Jay | May 14, 2021

Another fun kit

For RetroShield 6502 for Arduino Mega

This kit was very quick and easy to build. It's been fun to run the 6502 from my Teensy. It's very quick to load new 6502 firmware into the teensy instead of pulling out an EPROM, burning it and replacing it as I've done many times in the past. Thanks!

Tim | May 11, 2021

Great fun and useful for reliving my Z80 days.

For Teensy Adapter for RetroShield

I've been a software engineer for over 30 years but stll hark back to my Z80 days in the early eighties. This works really well and doubles up as a Z80 chip checker for me. I would recommend this to anyone with a taste for retro-computing. I've ony used it with the Z80 RetroShield so far although I have the 6502, the 6803, 1802 and the 6809 boards also. Most of these are unfamiliar to me and I look forward to doing a bit of retro-exploration. Easy enough to use but not recommended for absolute beginners (need to be familiar with Arduino, handy with soldering and have some knowledge of 8-bit micros to get the best out of the kits.). Also handy as an interface board for the teensy as it gives you a bunch of 5V I/O pins which can be used for other purposes besides RetroSheild use.

Malcolm | May 11, 2021

Z80 and MBasic on an Arduino Mega!

For RetroShield Z80 for Arduino Mega

Very high quality kit that worked immediately and allowed me to rediscover Microsoft Basic. Thoroughly recommend for anyone who has Z80 in their history!

Pierre | March 3, 2021

Full speed RetroShields

For Teensy Adapter for RetroShield

This board allows the old processors, 6809 for instance, to run a bit above 1MHz with a Teensy 3.6 where the Arduino Mega is ten times slower.

This speed allowed me to add many devices, emulated by the software, like a 7 segments display and a keyboard, and also an interface to the SD Card. They are seen as memory addresses by the RetroShield processor. The power of the Teensy 3.6 allows to stay above 1MHz most of the time.

I tried to adapt the software to the new Teensy 4.1, but its I/O registers are a bit different and force some modifications in the software. I must add that the software version for the Arduino Mega cannot run on the Teensy. You will have to take the right version, on https://gitlab.com/8bitforce/retroshield-teensy

The Teensy Adapter board is very easy to build. The PCB and components are of the best quality. All the documentation is perfect, and the schematics are not ugly at all, despite what the designer, Erturk Kocalar wrote :-)

I uploaded a small video on YouTube to demonstrate the Adapter and 6809 RetroShield : https://www.youtube.com/watch?v=1ehCcJTsoew

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