Devin Acker devinacker

devinacker / ctk551.txt

Last active August 26, 2021 16:54

	CTK-551 ROM dump (little endian):
	https://revenant1.net/ctk551.bin

	CTK-541 service manual (identical PCBs to CTK-551):
	https://www.synthxl.com/wp-content/uploads/2020/04/Casio-CTK-541-Service-Manual.pdf

	CPU: "Casio GT913F", 20-bit address bus, 16-bit data bus
	Similar CTK models feature a uPD913 or uPD914, i.e. the GT913F is apparently a rebranded NEC chip.
	Instruction set seems to be based on Hitachi H8/300, but with opcodes 5xxx-7xxx rearranged.

devinacker / omgpolar.py

Created May 27, 2020 16:16

	#!/usr/bin/env python3

	"""
	Doom map rect-to-polar "circularizer" - by Revenant

	Inspired by a blog post by Ribbiks:
	https://rbkz.blogspot.com/2020/05/circularizer-lua.html
	"""

	from sys import argv

devinacker / mastothing.user.js

Last active November 10, 2018 02:56

	// ==UserScript==
	// @name Mastodon timeline thing
	// @description keep timeline from automatically scrolling under mouse cursor
	// @author @[email protected]
	// @version 0.1
	// @include https://mastodon.social/*
	// @run-at document-idle
	// @namespace revenant.mastodon
	// ==/UserScript==

devinacker / regpoke.s

Created August 11, 2018 23:57

	.p816
	.code

	main:
	sei
	stz $4207 ; IRQ at H=0
	stz $4208 ; (leave IRQ disable flag set so it only resumes after WAI)
	lda #%00010000
	sta $4200
	wai

devinacker / exomizer-816.asm

Created July 10, 2018 01:13

WIP (sorta) Exomizer decruncher for SNES / 65c816 (with ca65)

	.include "libSFX.i"
	.feature force_range

	.export Decrunch

	/*
	Exomizer (raw mode) decruncher for 65c816 / ca65.
	by Devin Acker (Revenant/RSE), 2018

	For use on SNES, and theoretically other 65c816-based platforms.

devinacker / SDL_upng.c

Last active June 18, 2018 13:01

devinacker / gist:7a038ceba2d5652b8b7816107f579c7f

Last active September 17, 2018 16:43

Ad blocker filters for keeping some of Twitter's obtrusive garbage off of your timeline

	twitter.com##.moments
	twitter.com##div[data-card2-type^="promo"]
	twitter.com##div[data-component-context^="suggest_activity_tweet"]
	twitter.com##div[data-component-context^="suggest_recycled_tweet_inline"]

devinacker / binstruct.py

Last active March 7, 2021 23:52

	from __future__ import print_function
	import struct
	from omg.util import *

	class StructMeta(type):

	@staticmethod
	def _get(f):
	# Get struct field or default value
	def fn(self):

devinacker / keftendo.asm

Last active June 3, 2022 03:46

	//; "Super Keftendo" 256-byte SNES intro source code
	//; by Revenant

	//; http://www.pouet.net/prod.php?which=70163

	//; This is an attempt at implementing the "Kefrens bars" effect on the SNES, using less than
	//; 256 bytes of ROM. The technique used here is to set up a 256-color line buffer using
	//; Mode 7, then rendering a few pixels directly to CGRAM every scanline and resetting the
	//; Y-scroll position to display the same buffer on every visible scanline as it is repeatedly
	//; rendered to. Some more information about specific size optimizations are detailed later.

devinacker / formmake.c

Created January 4, 2017 20:29