drhelius

MBC3 RTC save format

the RTC data is appended after the sav file, 44 or 48 bytes. you can detect its presence by the save data being 44 or 48 bytes bigger than the cart's ram size, or 44 or 48 bytes bigger than a multiple of 8192.

old VBA (from 2005) saves the 44 bytes version, and can load both the 44 and 48 bytes version.

VBA-M saves the 48 bytes version, and can *only* load the 48 bytes version.

one should load both types, and always save the 48 bytes version.

JagCesar

language: objective-c
before_script:
  - chmod +x scripts/travis/add-key.sh
  - chmod +x scripts/travis/remove-key.sh
  - chmod +x scripts/travis/testflight.sh
  - ./scripts/travis/add-key.sh
script: xctool -workspace [Workspace name].xcworkspace -scheme '[Scheme to use]' -configuration [Build configuration name] -sdk iphoneos7.1 CONFIGURATION_BUILD_DIR='~/build/' build
after_success:
  - ./scripts/travis/testflight.sh
after_script:

drhelius

Memory Bank Controller (MBC) 3 for GameBoy Information



            by bRILLO hEAD, 1-Jan-98



 The MBC3 is a memory controller for some GameBoy carts

drhelius

Nitty Gritty Gameboy Cycle Timing
                  ---------------------------------
                  
                  
A document about the down and dirty timing of the Gameboy's video hardware.

Written by:  Kevin Horton
Version: 0.01 (preliminary)

My findings here are based on the original DMG, Super Gameboy, and GB

drhelius

GameBoy Color DMA-Transfers v0.0.1                           13.04.2000/GPZ-HIT
-------------------------------------------------------------------------------

"old" DMA Transfer (aka 'OAM-DMA')
----------------------------------

source:      - anywhere from $0000 to $dfff
             - must be page-aligned
destination: - always OAM-Ram at $fe00 - $fe8f
length:      - always 4*40 (=160 / $a0) bytes

jdennes

# pre-commit.py:
#
# Performs the following:
#  - Makes sure the author has entered a log message.
#  - Makes sure the author is only creating a tag, or if deleting a tag, author is a specific user
#  - Makes sure the author is not committing to a particular set of paths in the repository
#
# Script based on http://svn.collab.net/repos/svn/trunk/tools/hook-scripts/log-police.py
#
# usage: pre-commit.py -t TXN_NAME REPOS

drhelius

1.01 - Added some new licensees, fixed some
        descriptions.
v1.00 - Initial release.
_______________

This information was taken and compiled from Martin Korth's
NO$GMB emulator. Best viewed in DOS EDIT.

Every Gameboy ROM header starts off at the HEX offset 0134.

drhelius

Game Boy Sound Operation
------------------------
Shay Green (blargg)
gblargg@gmail.com
http://www.slack.net/~ant/

** This is an incomplete draft

This documents the behavior of Game Boy sound; details which aren't
relevant to the observable behavior have been omitted unless they

drhelius

	LD SP,$fffe		; $0000  Setup Stack

	XOR A			; $0003  Zero the memory from $8000-$9FFF (VRAM)
	LD HL,$9fff		; $0004
Addr_0007:
	LD (HL-),A		; $0007
	BIT 7,H		; $0008
	JR NZ, Addr_0007	; $000a

	LD HL,$ff26		; $000c  Setup Audio

jacobsebek

#include <SDL.h> // The SDL library
#include <math.h> // sin, fmod

#include <stdio.h> // printf

#define BUFFER_DURATION 1 // Length of the buffer in seconds
#define FREQUENCY 48000 // Samples per second
#define BUFFER_LEN (BUFFER_DURATION*FREQUENCY) // Samples in the buffer

void play_buffer(void*, unsigned char*, int);