tobiasvl

# Copied from https://github.com/aseprite/aseprite/blob/master/INSTALL.md#skia-on-linux

sudo yum install -y gcc-c++ cmake ninja-build libX11-devel libXcursor-devel mesa-libGL-devel fontconfig-devel

mkdir $HOME/deps
cd $HOME/deps
git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
git clone -b aseprite-m71 https://github.com/aseprite/skia.git
export PATH="${PWD}/depot_tools:${PATH}"
cd skia

tobiasvl

CHIP-8 extensions and compatibility

This document is intended as a well-sourced and exhaustive documentation of all extensions to CHIP-8. They all use the standard CHIP-8 interpreter as a base, mentioning what additions and changes they make to that common base.

This list is mostly for historical purposes; few of the extensions listed here had a considerable number of programs written for them. It could serve as a reference for CHIP-8 emulator/interpreter developers who want to support the various incompatible instructions and behaviors that have cropped up in different interpreters over the decades. Perhaps the instructions listed here can also inspire someone to make their own modern CHIP-8 extension (of which there have been a couple, see the bottom of the list).

A note on modern implementations

The only CHIP-8 extensions in active use today (beyond basic CHIP-8) are Super-CHIP 1.1 and the relative newcomer XO-CHIP.

tobiasvl

In the past few years, it seems that, as retro gaming has grown in popularity, programming for older platforms has also gained traction. A popular platform is the Game Boy, both for its nostalgia and (relative) ease to program for.

When someone wants to make their own game, one of the first problems they will encounter is picking the tools they will use. There are two main options: either use GBDK (Game Boy Development Kit) and the language C, or RGBDS (Rednex Game Boy Development System) and the Game Boy's assembly language.

The purpose of this document is to provide my insights and experience, and help you make the better choice if you're starting a new project. I will also provide some "good practice" tips, both for C and ASM, if you have already made up your mind or are already using one of these.

Overview

tobiasvl

; Based on nitro2k01's code from https://forums.nesdev.org/viewtopic.php?t=14631
; Changes:
; - Retains all registers, so a call to this routine can be added anywhere
; - Instead of saving all WRAM, just save a set number of bytes (c)
; Usage:
; - On boot, call LoadSRAM (will init and zero SRAM if needed, then load from SRAM)
; - When saving, call SaveSRAM (and then potentially LoadSRAM.sramOK)

LoadSRAM:
  call EnableSram

tobiasvl

This guide has moved

The CHIP-8 emulator guide has now been finalized and published on my blog.

Please go here to read it: https://tobiasvl.github.io/blog/write-a-chip-8-emulator/

The Markdown source is located here: https://github.com/tobiasvl/tobiasvl.github.io/blob/master/_posts/2020-07-20-write-a-chip-8-emulator.md

If you have this link I'll assume I should thank you for your valuable input while I was writing it. Feel free to continue making suggestions/pull requests over at GitHub!

tobiasvl

; *******************************************************************
; ***                                                             ***
; ***                 VIP2K Chip 8 interpreter                    ***
; ***                                                             ***
; *** This software is copyright 2008 by Marcel van Tongeren      ***
; *** You have permission to use, modify, copy, and distribute    ***
; *** this software so long as this copyright notice is retained. ***
; *** This software may not be used in commercial applications    ***
; *** without express written permission from the author.         ***
; *******************************************************************

tobiasvl

-rw-r--r--. 1 tvl tvl  5246976 Sep 19  2005 Assorted/01. Anberlin - Ready Fuels.mp3
-rw-r--r--. 1 tvl tvl  6584320 Jan 28  2006 Assorted/01 Boulevard of Broken Songs (Green Day vs. Oasis vs. Travis vs. Eminem).mp3
-rw-r--r--. 1 tvl tvl  5504546 Sep  8  2005 Assorted/01. Era - Ameno (Remix).mp3
-rw-r--r--. 1 tvl tvl  4996345 Apr 12  2007 Assorted/01 I've got the power.mp3
-rw-r--r--. 1 tvl tvl  5320502 Sep  8  2005 Assorted/03. Era - The Mass.mp3
-rwxr-xr-x. 1 tvl tvl  7959453 Jul 29  2007 Assorted/03 Oriental Dark Flight.mp3
-rw-r--r--. 1 tvl tvl  6235670 Sep 19  2005 Assorted/04. Damien Rice - Cannonball.mp3
-rw-r--r--. 1 tvl tvl  6750336 Sep  8  2005 Assorted/04. Disturbed - Down With the Sickness.mp3
-rw-r--r--. 1 tvl tvl  2884438 May  4  2007 Assorted/04 - time is on my side.mp3
-rw-r--r--. 1 tvl tvl  5060608 Sep 19  2005 Assorted/05. Anberlin - Glass To The Arson.mp3

tobiasvl

drwxr-xr-x.  5 tvl tvl      4096 Feb  9  2008 !!!
drwx------.  2 tvl tvl      4096 Feb 24  2007 120 Days
drwxr-xr-x.  2 tvl tvl     12288 Jul  8  2008 (1997-02-10) “FINAL FANTASY Ⅶ” Original Sound Track (SSCX-10004) [Ogg Vorbis]
-rwxr-xr-x.  1 tvl tvl   3686400 Jul 28  2007 27 Wily Stage.mp3
drwxr-xr-x.  2 tvl tvl      4096 Jan 24  2007 50 Hertz
drwxr-xr-x.  3 tvl tvl      4096 Aug 27  2007 8bit betty
drwx------.  2 tvl tvl      4096 Mar  5  2008 8bitmayhem
drwxr-xr-x.  4 tvl tvl      4096 Mar 18  2008 Air
drwxr-xr-x.  3 tvl tvl      4096 Aug 31  2006 All-Time Quarterback
drwxr-xr-x.  3 tvl tvl      4096 Jan 10  2006 Ambo

tobiasvl

[
  {
    "backcolor": "#C2C3C7",
    "name": "PICO-8 devkit keyboard",
    "author": "tobiasvl",
    "switchMount": "cherry",
    "switchBrand": "cherry",
    "switchType": "MX1A-G1xx"
  },
  [

tobiasvl

This guide has moved

The CHIP-8 emulator guide has now been finalized and published on my blog.

Please go here to read it: https://tobiasvl.github.io/blog/write-a-chip-8-emulator/

The Markdown source is located here: https://github.com/tobiasvl/tobiasvl.github.io/blob/master/_posts/2020-07-20-write-a-chip-8-emulator.md

If you have this link I'll assume I should thank you for your valuable input while I was writing it. Feel free to continue making suggestions/pull requests over at GitHub!