code · Getting Started
10PRINT and 100 Doors on the PicoCalc from Clockwork Pi
Running 10PRINT and 100 Doors on the Clockwork Pi PicoCalc, a retro-inspired Raspberry Pi Pico handheld running PicoMite BASIC.
code · Getting Started
PICO-8 100 Doors Problem
A visual exploration of the classic 100 Doors programming problem implemented in PICO-8, featuring animated circles that show the door-toggling …
code · Getting Started
10 Print on PICO-8
Continuing the exploration of 10PRINT, we look at how to implement the 10 Print algorithm on the Pico-8 platform.
code · Getting Started
Dragon Curves
We draw some dragon curves with Logo on the Commodore 64 inspired by Jurassic Park
code · Getting Started
10 PRINT in Rust vs C
A head-to-head performance comparison of the classic 10PRINT maze algorithm implemented in Rust and C, with benchmarks measuring millions of …
code · Getting Started
wAx the VIC-20
Exploring wAx, a native assembler for the VIC-20 that integrates with BASIC. Includes examples implementing 10PRINT and Fibonacci in assembly directly …
code · Getting Started
10 PRINT on the HP-42s
Implementing the classic 10PRINT maze algorithm on the HP-42s calculator using RPN programming. Works on SwissMicros DM42 and Free42 emulators too.
code · Commodore
The McNuggets Problem
Solving the classic McNuggets Problem in Commodore BASIC: what’s the largest number of nuggets you can’t buy with 6, 9, and 20 packs?
C64 · code
Back to the basics with BASIC (and Python): Binary Search
Why your algorithm choice matters: comparing linear search O(n) vs binary search O(log n) with implementations in Commodore BASIC and Python.
C64 · code
Machine Language: Count Faster on 6502
Optimizing a simple counting loop on the 6502, progressing from slow BASIC to increasingly faster assembly implementations. A practical guide to 6502 …
C64 · code
Visualize and verify the reverse engineered Commodore 64 SID LFSR
Building and verifying the Commodore 64 SID chip’s 23-bit LFSR in hardware on a breadboard and comparing the output against the actual SID chip.
C64 · code
A Gentle Introduction to LFSRs
An introduction to Linear Feedback Shift Registers: how they work, building one on a breadboard with shift registers and XOR gates, and implementing …
C64 · code
Quick Post: Printing binary numbers in Commodore BASIC 2.0
Commodore BASIC 2.0 A lot of fun with binary numbers can be had by printing them to the screen. This is a quick post to show how to do that with …
PET · code
10 Print on the TI-92
Implementing 10PRINT on the TI-92 calculator using TI-BASIC. Also covers Python versions on the Numworks and TI-nspire calculators.
C64 · code
A gentle introduction to two's complement
Understanding two’s complement: how computers represent negative numbers, why it simplifies hardware design, and how to work with signed …
C64 · code
N-Queens problem
Solving the classic N-Queens puzzle using backtracking. Covers both iterative and recursive approaches with implementations on the Commodore 64.
C64 · code
Rail Fence Cipher on Commoodore 64 and TI 99/4A
Implementing the Rail Fence Cipher on the Commodore 64 and TI 99/4A. A fun transposition cipher for secret messages with kids.
C64
A grid drawing rabbit hole
Drawing grids for screen layout planning on the Commodore 64 and VIC-20. Comparing BASIC, Simon’s BASIC, and Super Expander approaches.
AIM-65 · code
10 PRINT on the Rockwell AIM 65
Rockwell International was a powerhouse of the 1970s and 80s.
The Rockwell AIM 65 computer, also known as the Advanced Interactive Microcomputer 65, …
C64 · code
Building a software serial bridge
Modern and retro mix One of my favorite peices of retro clone hardware is Bob Corsham’s KIM-1 Clone. I’ve featured it many places like the …