Source library

Milestones — 2026-04-25

docs/ps1/milestones-2026-04-25.md

This is the website shelf page for docs/ps1/milestones-2026-04-25.md. It exists because the project has hundreds of Markdown files and the website should not pretend the interesting work only happened in the polished essays.

Why this file matters

Active PS1 reference. This is active engineering documentation for the PS1 port. It is close enough to the code that stale claims here become real bugs.

A single-day batch that pushed the PS1 port across several long-standing unknowns: working TTY, an instrumentable perf module wired into a Docker regtest harness, a real on-PS1 pause menu, a holiday-coverage design expansion from 4 to 35, a hand-rolled SPI controller driver replacing the broken BIOS pad path, and the start of memory-card-backed user settings. What follows is the day’s archeology in bullets, with links to the locked-in design docs.

File facts

Field Value
Source path docs/ps1/milestones-2026-04-25.md
Lines 139
Approx. words 998
Code fences 0

Outline

  • Milestones — 2026-04-25
    1. Working PS1 printf() to TTY
    1. Performance baseline + Docker regtest pipeline
    1. Pause menu — first real user-facing UI (SHIPPED)
    1. Holiday expansion — 4 → 35 design
    1. SPI direct controller polling
    1. Memcard support (SHIPPED)
    1. TTY log prefixes
  • Pointers

Read it in context