Retro-computing

A collection of 6 posts

Lofi Calculator AR

Off-screen there is an Arduino Nano plugged into the communication port of the TI-83 which is converting a stream of video data (96x64 monochrome frames) into the TI port protocol. An assembly program on the calculator very rapidly transfers the video data to screen memory. A 3D scan of me

Remote Controlling a TI-84+ from a PC

There is a remote control protocol baked into TI 84+ graphing calculators so that it is possible for Texas Instruments to make products that take control of calculators in the classroom via their link ports. I implemented the protocol on an Arduino and made a control program in Ruby to

Demomite

A game in 2KB of code, 128 bytes of RAM, 8 million instructions per second, and 2 days

Greyport

A high school project that was meant to be a pocketable universal hacking tool. It was called Barnacle before it was called GreyportCodehttps://github.com/jmptable/greyport

A Tiny Helicopter Game

https://github.com/jmptable/tiny-asm-copter This is a helicopter game written in AVR assembly for an ATTiny13A connected to a Nokia 3310 LCD and 1 button. Made for the fun of the challenge to fit a graphical game into 1 KB code space and 64 bytes of RAM while running

PropComp

Lightly edited copy of the original blog post from when I was in high school: This is the PropComp in all its current glory. Future versions will have all this contained in a case under the keyboard, kind of like the Commodore 64, except this will include the screen. The
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