Saturnin News - Somet ...

Main

Main/News Page
Dreamcast Guides/FaQs/Tutorials
NEO Myth MD 3in1 flash cart + 512M (Genesis/32X/Master System Flash Cart) Review
History of Sega Saturn

Sega Dreamcast
Emulators For Dreamcast
Dreamcast Emulators
Dreamcast Interpreters
Dreamcast Homebrew
Needed Tools for Dreamcast

Sega Saturn

Emulators for Sega Saturn
Sega Saturn Emulation
Sega Saturn Homebrew
Free Sega Saturn Games

Sega 32x

Emulators for Sega 32x
Sega 32x Homebrew Games

Vintage Sega

Vintage Sega Homebrew
Vintage Sega Emulators

Social Media

Facebook

DCEmu Theme Park News
Wraggys Beers Wines and Spirits

Youtube

Wraggys Beers Wines and Spirits
DCEmu Theme Park News Videos
Gamer Wraggy 210

Twitter

Wraggys Twitter

Buy Sega

Dreamcast

Sega Saturn

Sega 32x

buy sega 32x

Sega Megadrive

Sega Master System

Sega Game Gear

Sega Everdrive Flashcart

buy sega everdrive flashcart

The DCEmu Homebrew & Gaming Network

DCEmu Portal
DCEmu Current Affairs
DCEmu Forums

DCEmu Console Sites

Apple & Android News
Sega News
Nintendo News
Open Source Handhelds
PC Gaming
Sony Console News
Xbox News

DCEmu Misc Sites

Retro Homebrew & Console News
DCEmu Reviews
Wraggys Beers Wines & Spirits Reviews
DCEmu Theme Park News
Gamer Wraggy 210

DCEmu Homebrew Coder Sites

Chui Dreamcast Developer

News Archive

2024

December
November
October
September
August
July
June
May
April
March
February
January

2023

December
November
October
September
August
July
June
May
April
March
February
January

2022

December
November
October
September
August
July
June
May
April
March
February
January

2021

December
November
October
September
August
July
June
May
April
March
February
January

2020

December
November
October
September
August
July
June
May
April
March
February
January

2019

December
November
October
September
August
July
June
May
April
March
February
January

2018

December
November
October
September
August
July
June
May
April
March
February
January

2017

December
November
October
September
August
July
June
May
April
March
February
January

2016

December
November
October
September
August
July
June
May
April
March
February
January

2015

December
November
October
September
August
July
June
May
April
March
February
January

2014

December
November
October
September
August
July
June
May
April
March
February
January

2013

December
November
October
September
August
July
June
May
April
March
February
January

2012

December
November
October
September
August
July
June
May
April
March
February
January

2011

December
November
October
September
August
July
June
May
April
March
February
January

2010

December
November
October
September
August
July
June
May
April
March
February
January

2009

December
November
October
September
August
July
June
May
April
March
February
January

2008

December
November
October
September
August
July
June
May
April
March
February
January

2007

December
November
October
September
August
July
June
May
April
March
February
January

2006

December
November
October
September
August
July
June
May
April
March
February
January

2005

December
November
October
September
August
July
June
May
April
March
February
January

2004

December
November
October
September
August
July
June
May
April
March
February
January

2003

December
November
October
September
August
July
June
May
April
March
February
January

2002

December
November
October
September
August
July
June
May
April
March
February

DCEmu Newcomers

Username: HanoraSakura99

Posts: 0

Username: ConnorMould

Posts: 0

Username: Nuchita99

Posts: 2

Username: bahman00

Posts: 0

Username: adilsardar

Posts: 0

Saturnin News - Something fishy with onchip memory

July 1st, 2009, 22:19 Posted By: wraggster

Runik has posted news concerning his Sega Saturn Emulator for Windows:

As I was converting different VDP2 modes to the new cache, I came across testing the game 3 Dirty Dwarves. This game got a strange problem since version 0.32, as main player characters weren't being diplayed on screen : you could move around, see bullets fired, or punch the villains, but that was it. You could only guess your position by the scrolling moves.

At first I thought it was related to the DSP, as some games use it to do some sprite calculations, but after a quick check that wasn't the case.

Some more tracing lead me to some unmapped memory access (which wasn't logged for some reason), and reading through the SH2 hardware manual gave me the aswers I was looking for : the SH2 has an internal cache (4KB of data, and 1KB of addresses), which can be configured to be used as a 4 ways cache (all the data cache is used as instructions / data cache), a 2 ways cache (the first half is used as a high speed RAM, and the other one as regular cache), or completely disabled (4KB used as high speed RAM).

After adding this 4KB area to the memory map of the emulator, bingo ! The sprites are displayed

For more information and downloads, click here!

There are 0 comments - Join In and Discuss Here

300x250uk

Forum Info

Users online:

Guests online: 8239. Total online: 8239.

You have to register or login before you can post on our forums or use our advanced features.

Total threads: 207,581
Total posts: 751,389

Go to the forum

Advert

Sega News

Sega Sammy splits video games and pachinko machines into separate companies
Toshihiro Nagoshi to step down from Sega board of directors
Sega Sammy reports sharp income decline despite soaring game sales
Sega Sammy reports sharp income decline despite soaring game sales
BattleTech - Operation REVIVAL Update
Supermodel SVN r845 - Sega Model 3 arcade emulator for Windows
Retro is Always in When You’ve Got Pac-Man Fever!
Kronos v2.1.5
Sega Model 3 UI (2020/12/23)
GearSystem v3.2.0
Sonic the Hedgehog (1991) prototype discovered
MegaXmas'89 - Sega Genesis/Megadrive
Lunar: Eternal Blue Unworked 2.0 released
Tapework Disco Puzzle (Kickstarter) (NES & Dreamcast Game)
How To Quickly Generate C Prototype Functions In VSCode (Genesis Misc)
Phantom Gear (WIP) (Commercial) (Genesis Game)
MegaXmas’89 (Genesis Game)
Demons Of Asteborg (Update December 2020) (WIP) (Genesis Game)
SSF PreviewVer R18(V8)
Netflix announces new Sonic animated series
Sonic The Hedgehog 2 movie expected to start production in March
Sega Megadrive 112 in 1 16 Bit Game Cartridge For Megadrive Multi Cart Retro
Flycast Git (2020/11/26)
How 'buoyant' Sega Europe is helping Sega Sammy stay afloat
The Sega Saturn Port of Vandal Hearts Translated Into English
Kigen v1.37
Lord Monarch [MD] English translation released!
Kigen v1.31b
SSF PreviewVer R18(V7)
New Phantasy Star IV story revelations incorporated into PSGen4 Retranslation Patch
Sega Saturn SRPG Vahollian Translated into English!
MasterGear v4.7 for Windows
Reicast Git (2020/10/19)
Supermodel SVN r832
SSF PreviewVer R18(V6)
Flycast Git (2020/11/11)
SEGA, again, reiterates that it wants to release more ports of Atlus titles
Sega Sammy sells arcade business Sega Entertainment to Genda Inc
Sega Sammy raises forecasts, despite losses driven by COVID-19
Journey to Oblivion v0.2.1 (WIP) (Genesis Game)
Arapuca (Commercial) (Genesis Game)
Sega will "aggressively" focus on PC ports after Steam strength during lockdown
Sega president Kenji Matsubara resigns
Sega's strong Q1 games performance erased by impact of COVID-19
Sega announces Astro City Mini arcade cabinet
Sonic Dash has made $10 million in six years
Yaba Sanshiro v3.3.1
Alex Kidd in Miracle World DX - Alex Kidd in Miracle World remake is coming Q1 2021!
MEGA 8 - May 1993 (UK)
Sonic 3D in 2D - A new PC fangame that re-imagines Sonic3D in 2D
Phantasy Star Generation 4: A Relocalization - Final(ish) Patch Released w/ Script Op
Half-game, half-manual: Mega Drive strategy game Bahamut Senki translated
Sega reveals Game Gear Micro
Sonic the Hedgehog movie getting a sequel
GLUF - RetroSouls releases a fabulous Sega Mega Drive/Genesis game
SEGA will be giving Sonic games longer development to result in better games
The Definitive Streets of Rage 2 TMNT Mod is Here!
gearsystem v3.1.0 released!
Game Gear's first ‹RPG›, Eternal Legend, ‹translated›
Surge in packaged games drive Sega's full-year sales to $3.4bn
Reicast Git (2020/05/11)
Flycast Git (2020/05/12)
Xump 2 (Commercial Game) (Genesis Game)
MEGA 7 - April 1993 (UK)
Flycast Git (2020/04/29)
Sega launches new Sega Music brand
Yaba Sanshiro v3.1
Sega Arcade Pop Up Book Inbound
Supermodel v0.3a WIP r791
GearSystem v3.0.3 released!
Kronos v2.1.1
BlastEm v0.6.3 pre (2020/04/18)
gearsystem v3.0.2 released!
Retro-Bit shows off its "improved" take on a Dreamcast controller, set for release th
GearSystem v3.0.1 released!
Tonight, the Shredder WILL Dine on Turtle Soup!
BlastEm v0.6.3 pre (2020/04/04)
Yaba Sanshiro v3.0
SSF PreviewVer R16
Flycast Git (2020/04/01)
Project Lunar v1.0.5 NOW AVAILABLE!
Reicast Git (2020/03/28)
BlastEm v0.6.3 pre (2020/03/29)
Redream Git (2020/03/29)
SEGA 60th anniversary webpage now live, introduces Sega Shiro character
Arkagis Revolution (Commercial) (Genesis Game)
Bio Evil (WIP) (Genesis Game)
DC-UK 18 - january 2001 (UK)
BlastEm v0.6.3 pre (2020/02/26)
Sonic grosses $210 million worldwide in ten days
Redream v1.5.0
DC-UK 19 - february 2001 (UK)
And 1 for Arle: Madou Monogatari I for Sega Mega Drive/Genesis translated
Sonic the Hedgehog beats Detective Pikachu in US opening weekend
SSF PreviewVer R15
A major update of KiddEd was released
BlastEm v0.6.3 pre (2020/02/03)
Redream Git (2020/02/08)
Reicast Git (2020/02/09)
Kronos v2.0.2
Sega lowers full-year forecast on soft Q3 packaged sales
Emulicious (2020/02/02)
Madou Monogatari A translation released
Reicast Git (2020/01/30)
Sega Europe announces fully recyclable packaging for all PC titles
Redream Git (2020/01/29)
SSF PreviewVer R14
Lethal Wedding (Commercial) (Genesis Game)
Official Sega Magazine 4 - april 1994 (UK)
Sega’s new “SONIC2020 Project”
Rock n' Roll Racing Hack - version 16
Redream Git (2020/01/14)
Irena Genesis Metal Fury (2020-01-06) (WIP) (Genesis Game)
Voyage - A Sorceress' Vacation AKiMW total conversion released for Sega Master System
SSF PreviewVer R13
Kronos v2.0.1
Redream Git (2020/01/01)
Reicast Git (2020/01/01)
Goof Troop (WIP 12/2019) (Genesis Game)
8bitworkshop v3.5.0
Intrepid Izzy v2019.12 (Commerical) (WIP) (Kickstarter) (Dreamcast Game)
Super Nutmeg (WIP) v2019.12.31 (Dreamcast Game)
Di-di-diacute, my darling: Madou Monogatari III translation released
People of the Year 2019: Yu Suzuki
Shenmue III comes up short in the Japanese chart
Shenmue III: Critical Consensus
Nova v0.6.0
SSF PreviewVer R10
Supermodel SVN r782
Shenmue III launch trailer teases the long-awaited sequel to the Dreamcast cult class
Early Sonic 3 prototype found, features major differences to the final game
DC-UK 20 - march 2001 (UK)
BlastEm v0.6.3 pre (2019/10/10)
"Napple Tale: Arsia in Daydream" English translation released
SSF PreviewVer R9
SSF PreviewVer R8
Flycast emulator gets its Windows CE branch integrated into the main core
Yaba Sanshiro v2.7.5
SSF PreviewVer R7
Retail Clerk ’89 (August 2019) (Genesis Game)
The Sega Dreamcast turns 20 years old in the west
Celebrate 35 Years of Ninja Turtles… with Rage!!!
Yaba Sanshiro v2.7.1
Yaba Sanshiro v2.6.8
SSF AndroidVer (2019/08/16)
SSF PreviewVer (2019/08/18)
Shadowrun 2058
Sega remixes their "Genesis Does" commercial for the 30th anniversary of the system
Sega letting movie makers make the movie
SSF PreviewVer R6 released!
Sega, TinyBuild and Daedalic join GamesIndustry.biz Investment Summit at PAX
Redream v1.4.0
Reicast r19.07.4 released!
The Sega Mega Drive Mini has been delayed slightly for Europe
Sega Sammy operating income up 246.6% this quarter
Phantom Gear (Genesis Game) (Kickstarter)
SSF PreviewVer R4
GearSystem v2.6.0
Shenmue III backers have to purchase season pass, deluxe edition separately
Shenmue 3 PC backers will get refunds over Epic exclusivity
Sega sees streaming's potential to reach new audiences
Sega's rights as publisher of Alpha Protocol have expired
SSF PreviewVer R2- Windows and Android
Kronos v1.7.0
Crypt of Dracula v2019.06.01 (WIP) (Genesis Game)
Deflektor v1.0 (Genesis Game)
FX Unit Yuki – The Henshin Engine (Commercial) (Dreamcast Game)
Z-Treme Engine FPS Demo v2019.06.06 (WIP) (Saturn misc)
Switchblade (Kickstarter) (Sega Genesis)
Arcade Racing Legend (WIP) (Commercial) (Dreamcast Game)
Misplaced v2019.05.25 (Genesis Game)
Shenmue III is an Epic Games store exclusive on PC
Comix Zone - Calcium Kid edition
Yaba Sanshiro v2.5 Beta 2
Fullscreen NICCC 2000 (Genesis Demo)
Finding Teddy (Commercial) (Dreamcast Game)
Intrepid Izzy v2019.05 (Commerical) (WIP) (Kickstarter) (Dreamcast Game)
The Curse of Illmoore Bay v2019.06.01 (WIP) (Genesis Game)
MegaXor v0.2 (Genesis Game)
Mega Wing v2019.06.02 (WIP) (Genesis Game)
'Shenmue III' gets delayed again
Sonic the Hedgehog film delayed
Fullscreen NICCC 2000 (Genesis Demo)
Sega's Judgement will be available in Japan again in July
Robo-Ninja Climb v2019.05.10 (Dreamcast Game)
Old Towers v1.2 (Genesis Game)
The Curse of Illmoore Bay (Kickstarter) (Genesis Game)
Madou Monogatari II translation released
Sega acquires Two Point Studios
New Streets of Rage 2 Hack- Sonia The Hedgehog
Sonic The Hedgehog film character design will change, says director
ODCM 0 - october 1999 (UK)
ODCM 0 mini - september 1999 (UK)
Sega to reduce digital development after rocky performance last year
Sega Hardlight integrated into publisher's European pillar structure
Sega Model 2 UI released!
Sega Model 3 UI release!
Sega Mega Drive Mini will launch September 19
GearSystem v2.5.1
BlastEm v0.6.2

The DCEmu Homebrew and Gaming Network

Welcome to the DCEmu Homebrew and Gaming Network. This Network of sites is owned and ran by fans of all games consoles, we post news on all the consoles we cover about hardware aspects, gaming and Homebrew. Homebrew and Emulation are software thats made using free and legal tools to play on games consoles. This Network is the only worldwide network of sites where coders can upload and post comments they deserve for all their hardwork. We have a Network that currently supports PSVita, WiiU, Nintendo Wii, Xbox360, PS3, PS2,PS1, Snes, N64, Gameboy, Nes, Xbox, Gamecube, Nintendo DS, PSP, GBA, Dreamcast, Sega Saturn,3DS, DSi, Switch, PS4, Pandora, xboxone, GP2X, iPhone, Windows Phone, iPad, Android and also Mobile Phone Emulation. When new consoles appear we will expand to cover those consoles. We also cover Theme Park News and news and reviews of Beer, cider, lager, wines and spirits. news of their own releases and get the credit and Please help DCEmu become stronger by posting on the forums every day and make our community larger.