Sega - MS/GG (SMS Plus GX)¶

Background¶

SMS Plus is an open-source Sega Master System and Game Gear emulator written by Charles MacDonald.
SMS Plus GX is an enhanced version which includes improved accuracy, bug fixes with most games and others.

Added support for coleco system (experimental).¶

Author/License¶

The SMS Plus GX core has been authored by

Charles Mcdonald
Eke-Eke (GX)

The SMS Plus GX core is licensed under

GPLv2

A summary of the licenses behind RetroArch and its cores can be found here.

Extensions¶

Content that can be loaded by the SMS Plus GX core have the following file extensions:

.sms
.bin
.rom
.gg
.col

Databases¶

RetroArch database(s) that are associated with the SMS Plus GX core:

BIOS¶

Required or optional firmware files go in the frontend's system directory.

Filename	Description	md5sum
bios.sms	Master System BIOS - Optional	840481177270d5642a14ca71ee72844c
BIOS.col	Coleco BIOS - Required	2c66f5911e5b42b8ebe113403548eee7

Features¶

Frontend-level settings or features that the SMS Plus GX core respects.

Feature	Supported
Restart	✔
Screenshots	✔
Saves	✔
States	✔
Rewind	✔
Netplay	✕
Core Options	✔
RetroAchievements	✔
RetroArch Cheats	✔
Native Cheats	✕
Controls	✔
Remapping	✔
Multi-Mouse	✕
Rumble	✕
Sensors	✕
Camera	✕
Location	✕
Subsystem	✕
Softpatching	✔
Disk Control	✕
Username	✕
Language	✕
Crop Overscan	✕
LEDs	✕

Directories¶

The SMS Plus GX core's internal core name is 'SMS Plus GX'

Frontend's Save directory

File	Description
*.srm	Cartridge battery save

Frontend's State directory

File	Description
*.state#	State

Geometry and timing¶

The SMS Plus GX core's core provided FPS is 60 for NTSC games and 50 for PAL games
The SMS Plus GX core's core provided sample rate is 44100 Hz
The SMS Plus GX core's base width is dependent on loaded content and when using ntsc filter
The SMS Plus GX core's base height can be 192/224/240 for Master System/Coleco and 144 for Game Gear games
The SMS Plus GX core's max width is 602
The SMS Plus GX core's max height is 240
The SMS Plus GX core's core provided aspect ratio is 4:3

Core options¶

The SMS Plus GX core has the following option(s) that can be tweaked from the core options menu. The default setting is bolded.

Settings with (Restart) means that core has to be closed for the new setting to be applied on next launch.

Hardware (Restart) [smsplus_hardware] (auto/master system/master system II/game gear/game gear (sms compatibility)/coleco)

Emulates which system hardware to use.
Region (Restart) [smsplus_region] (auto/ntsc-u/pal/ntsc-j)

Runs console at a specific video timing based on region
Remove Border [smsplus_remove_left_border] (disabled/enabled)

Removes the black border on the left of some games. (SMS Only)
Blargg NTSC Filter [smsplus_ntsc_filter] (disabled/monochrome/composite/svideo/rgb)

Replicates the analog signal effects such as color bleeding and pixel artifacts to match the images a TV would show.