An idea for hexadecimal time

• basic unit of time is the second
• epoch is the unix epoch
• this makes it compatible with unix time up to second level precision
• the equivalent of a millisecond would be a mibisecond (1/1024 sec)
• UTC time of writing: 687F 5394
• YYMW DHmm
• hex minute: 0x100 seconds or 4.267 minutes
• hex hour: 0x10 minutes or 1.1378 hours
• hex day: 0x10 hex hours or 0.758 days
• hex week: 0x10 hex days
• hex month: 0x10 hex weeks
• hex year: 0x10 hex months
• hex century 0x100 hex years

Yet Unnamed Revolution Investigation

DOL

• More compatible with Nintendo tooling
• I assume it has something to do withu

ELF

• more flexible than DOL
• can be converted to/from DOL

KalistiOS

• seems to be an SDK for Dreamcast
• supported PS2 and GBA at one point but those are unmaintained
• supported x86 at one point but wasn’t made public?
• looks like yu-rvl is gonna be doing stuff with that

libOGC

• bad
• seems like it’s used by most/all existing Wii homebrew

NAND Channel

• Forwarders?

BlocksDS

• seems to be an NDS SDK we’re shipping alongside other Yu utils?

Hardware

• 128x128 Screen
• 2 Controllers
  • Dpad + Circle + X
• 16 official colors + 16 unofficial colors
• 256 8x8 sprites
• 32kb cart size
• 64kb RAM
• 4 channel audio
• uses p8scii
  • != ascii
• runs at 30fps or 60fps

P8PNG Format

Current Setup

Auxin (HTPC):

• OS: NixOS
• Service Runtume:Docker Compose
• Services:
  • Syncthing
  • Jellyfin
  • Caddy (as reverse proxy only)
  • Kodi
• Service Storage:
  • Bind Mounts to NFS on NAS Lipotropin (NAS):
• OS: Proxmox
• Services Runtime: K3S
• Services:
  • adminer
  • caddy
  • copyparty
  • forgejo
  • jackett
  • mariadb
  • ntfy
  • paperless+gotenberg+tika
  • qbittorrent+gluetun
  • radarr
  • redis
  • slskd
• Service Storage:
  • NFS to spinning rust on same system
• Baremetal storage:
  • 6 HDDs in BTRFS5 (50TB raw, 38TB usable) Motilin (working hostname, Unused)

Other Client Devices:

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  board: Array,
  currentPlayer: 'white' | 'black',
  moveHistory: Array,
  enPassantTarget: {x, y} | null,  // Updates each turn
  halfMoveClock: number,  // For 50-move rule
  capturedPieces: Array
}

3. Move Validation System

Separate move generation into layers:

Layer 1: Basic Move Patterns

getPseudoLegalMoves(piece, position)
  - Returns all squares the piece could move to
  - Ignores check/pin considerations
  - Each piece type has its own logic

Layer 2: Board-Aware Filtering

getLegalMoves(piece, position, gameState)
  - Filters pseudoLegal moves
  - Checks if king would be in check after move
  - Handles special moves (castling, en passant)

Handling Special Cases

En Passant

https://file-extensions.com/docs/pkpasss https://developer.apple.com/documentation/walletpasses

D091 41 3A7 416A

Ports over to DTMF as well

Hardware

• Display Resolution: 192x160

  • potentially just upscaled from 96x80
  • at 3x scaling that’s 576x480, 32px pillarboxes if 640x480
  • 384x320

• how small can the screen physically be?

  • android guidelines say 48dp @ 160dpi or 0.3"
    • android guidelines also say 48dp is about 9mm so who the fuck knows anymore
  • apple says 44pt or 44/72" or 0.61"
    • 44pt is 44px, 88px, 132px depending on device
    • 132px on iPhone X @ 448(?)dpi so ~ 0.294"
  • 192x160 is 1.2"x1"
  • 640x480 is 4"x5" for a 6.4" diagonal
  • 28.8" x 24" needed to meet android accessibility guidelines jfc
  • tl;dr: Apple and Google seem to want about 0.3"per target
  • NDS screen size is 106.666 dpi
    • poketch would be 1.8x1.5"
    • 640x480 would be 2x1.5" or 2.5" diagonal
  • https://www.adafruit.com/product/2478 should do the trick
    • 320x240 2.4"
    • we use 288x240 (1.5x)

• 2 Bit grayscale

Digested from:

• https://www.usenix.org/legacy/events/usenix05/tech/freenix/full_papers/hensbergen/hensbergen.pdf
• https://www.kernel.org/doc/Documentation/filesystems/9p.txt
• http://ericvh.github.io/9p-rfc/rfc9p2000.html
• http://ericvh.github.io/9p-rfc/rfc9p2000.u.html
• https://9fans.github.io/plan9port/man/man4/9pfuse.html
• https://github.com/pfpacket/rust-9p/tree/master/example/unpfs

9p2000 Opcodes

All messages take a tag parameter used to multiplex connections

Session

• version
  • parameter negotiations
• auth
  • T
    • afid: auth handle??
    • uname
      • username
    • aname: mount name (root if blank)
• attach
  • establish connection to server
  • T
    • fid is file handle, chosen by client?
    • afid is an ‘auth handle’
      • -1 for no auth
    • uname
    • aname
  • R:
• flush
  • abort request
• error

File

• walk
  • lookup pathname
• open
• create
• read
• write
• clunk
  • release a file?

Metadata

• stat
  • read metadata attrs
• wstat
  • write metadata attrs
• Requests are T-messages
• responses are R-messages

• Sort selected lines: :sort
• Open man page: :man [command] or \K
• Open URL: gx
• Move between splits: ctrl+w [direction]
• vim-commentary: gc [motion] to comment out
• Case switching:
  • gU to uppercase
  • gu to lowercase -g~ to toggle
• Substitute:
  • /g global - sub all in line
  • :%s/ - substitute in all lines
  • :5,12s/ substitute from lines 5 to 12
  • :.,+2s/ substitute this line (.) and the next 2
  • :g/^foo/s/bar/baz/g substitute all instances of bar with baz on lines beginning with foo
  • /c - ask for confirmation
• Windows
  • :sp [filename] horizontal split, optionally open file
  • vsp vertical split
  • ctrl+w w move between windows
  • ctrl+w = resize windows to be equal
  • ctrl+w q close window
  • ctrl+w <direction> move window

NixOS/Nix

• Show channels: sudo nix-channel --list
• add unstable channel: sudo nix-channel --add https://nixos.org/channels/nixpkgs-unstable unstable
• update repos: sudo nix-channel --update; sudo nix search -u

SSH

• Set up port forwarding in existing connection:

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$ ~C
ssh> -D [port number]
[Enter]
[Enter]
$

Shell

• !!:s/foo/bar/, replace first instance of foo with bar in the previous command
• ^foo^bar same thing but shorter and less flexible
• !foo rerun last command containing foo

Keepalived

• don’t ever use use_vmac, it’s fucky

Toki Pona Prop 65 Warning

• ⚠️ toki pi (ike ken)! ni li ken pana e ijo Esutolosen tawa sina. ma Kaliponja li sona e ni: ijo Esutolosen li ken pakala e jan. o sona mute: http://www.P65Warnings.ca.gov.
• ⚠️"O’ L n K! \|/ > K “n’» O Esutolosen A_b. (+) Kaliponja > “[]’ > \|/: O Esutolosen > K \[Z\]» ,O,. `o “[]’ |||: http://www.P65Warnings.ca.gov.
• ⚠️󱥬󱥍󱦗󱤍󱤘󱦘! 󱥁󱤧󱥌󱤉󱤌󱦐󱤉󱥦󱥬󱤫󱥚󱦆󱦑󱥩󱦗󱥞󱦘. 󱤰󱦐󱤗󱤪󱥔󱦆󱤑󱦑󱤧󱥡󱤉󿬂: 󱤌󱦐󱤉󱥦󱥬󱤫󱥚󱦆󱦑󱤧󱤘󱥈󱤉󱤑.󱥄󱥡󱤼: http://www.P65Warnings.ca.gov.
• ⚠️ tk P iG g! N l g bn e iJ ezt~[ Tw sn. M Kl=Y l Sn e N: iJ ezt~[ l g bKL e j. o Sn uE: http://www.P65Warnings.ca.gov.

• DFS / BFS

  • BFS better for shortest path and level-order traversals
    • What the FUCK is a level-order
      • left to right, top to bottom

• k Smallest/largest use a heap/sorting?

• Can brute force of params are super small otherwise use DP

• if linked list or if multiple sequences, use two pointers

• if it’s a DAG, use a toposort

  • how to implement toposort

• if it involves summing a subset, prefix sum (constant time)

communication between a client and meshtastic device over serial

• need to adapt from: https://github.com/meshtastic/Meshtastic-arduino
• https://store.rokland.com/products/rak-raspberry-pi-rp2040-core-module-for-lorawan-with-lora-sx1262-us915-mhz-rak11310-pid-116003 seems like a minimal device that would work well for this

Next Step: figure out how tf to get serial I/O on interesting devices

• TI-84: seems to not be viable? MirageOS has functions for using the TI protocol to send bytes but we’d need an intermediary to turn that into the meshtastic serial protocol

• bat
  • tail -f | bat --paging=never -l log
• gdu
• neovim
• fd
• lazygit
• lsd
• nix
  • okay I’m sure people are gonna roast me for this one but, as someone who uses Alma 8 and Ubuntu LTS at work, so using nix-env as a package manager is a lifesaver
• zoxide
• yazi
• xonsh / nushell
• viddy
• uv
• thefuck
• zellij
• ouch
• sheldon
• ruff
• ripgrep
• ugrep
• meld
• uutils hashing
• uutils cp/mv
• difft
• just
• jj
• mirafetch hyfetch
• hyperfine
• gum
• fzf
• age
• tokei
• glow
• duf
• nala
• cliphist
• chezmoi
• btdu

Existing Work:

https://github.com/SoMainline/linux-apple-resources/blob/master/HOWTO.md PongoOS:Seems to be a minimal boot environment for checkra1n boards https://github.com/konradybcio/linux-apple: Kernel fork for iOS devices?

PongoOS build errors

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src/kernel/mm.c:378:14: error: variable 'vm_index_start' set but not used [-Werror,-Wunused-but-set-variable]
  378 |     uint32_t vm_index_start = 0;
      |              ^
src/kernel/mm.c:938:10: error: variable 'is_tt1' set but not used [-Werror,-Wunused-but-set-variable]
  938 |     bool is_tt1 = false;
      |          ^
2 errors generated.
src/kernel/task.c:294:5: error: call to undeclared function 'va_start'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  294 |     va_start(va, reason);
      |     ^
src/kernel/task.c:296:5: error: call to undeclared function 'va_end'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  296 |     va_end(va);
      |     ^
src/kernel/task.c:300:5: error: call to undeclared function 'va_start'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  300 |     va_start(va, reason);
      |     ^
src/kernel/task.c:302:5: error: call to undeclared function 'va_end'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  302 |     va_end(va);
      |     ^
4 errors generated.
src/drivers/sep/sep.c:913:6: error: a function declaration without a prototype is deprecated in all versions of C and is treated as a zero-parameter prototype in C23, conflicting with a subsequent definition [-Werror,-Wdeprecated-non-prototype]
  913 | void sep_help();
      |      ^
src/drivers/sep/sep.c:1145:6: note: conflicting prototype is here
 1145 | void sep_help(const char* cmd, char* args) {
      |      ^
1 error generated.
make: *** [Makefile:99: build/Pongo] Error 1

Code fixes: