Adafruit is open and shipping! Let's build back better, together!
0

Reverse engineering a Shop Bot ROM #BASIC #ReverseEngineering @abzman2000

Evan’s Techie-Blog continues exploration of a Shop Bot. Having dumped the ROM on the control board, what did they find? The answers are unexpected:

After dumping the ROM from the shop bot we were intrigued by what we found.  Some of the strings in the ROM indicated that there was a BASIC interpreter on there, and there was even plaintext BASIC.  After some digging this is what we found.

Blue Earth Research was a company that made microprocessor development boards, presumably for industrial use.  They packaged (in our case) an 80c32 processor, a ROM chip, and I/O expander, and made it all as compact as possible.  They also did work with the 8052 and other processors in that line.  Among the series of boards they offered was the Xplor 32d, the ‘d’ standing for digital as there were boards with on board analog to digital converters.  They provided the BASIC interpreter’s hex file, the assembly source for a program that could load that hex file onto the microprocessor, and the source for libraries for use with peripherals such as a keypad, an HD44780 LCD screen, and X-10 automation hardware.

See the entire post as they dig into the code the ROM contains, both assembly and BASIC.

setup

 


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 25,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — To make it through a tough business cycle, layoffs should be a last resort

Wearables — Pipe cleaner purposes

Electronics — Diode Test Current

Python for Microcontrollers — Python on Microcontrollers Newsletter: CircuitPython 6 released and projects galore! #Python #Adafruit #CircuitPython @micropython @ThePSF

Adafruit IoT Monthly — CO2 Cuckoo Clock, Wippersnapper, and more!

Microsoft MakeCode — Making a Smart LEGO Ferris Wheel!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — New Products 11/25/2020 Featuring #Adafruit #SGP40 #AirQuality Sensor Breakout – VOC – STEMMA QT @adafruit #newproducts

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.