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Sega SG-1000

Overview

The Sega SG-1000 application is an emulator for the Sega SG-1000 game console.

Cheril Perils Classic by Mojon Twins

Controls

The emulator supports up to two controllers. The keyboard and gamepad mappings are listed in the tables below.

Keyboard

Keyboard support is only available for controller one.

Name
Keys
 Comments
Move
1/Start
2
Pause
Show Pause Screen

Gamepad

Gamepad support is available for both controllers.

Name
Gamepad
 Comments
Move  or 
1/Start
2
Pause Not available for Xbox and not recommended for iOS (see alternate)

Press the Menu (Start) Button.
Pause
(Alternate)		  and  Hold down the Right Trigger and click (press down) on the Right Thumbstick.
Show Pause Screen  and  Not available for Xbox and not recommended for iOS (see alternate 3 or 4)

Hold down the Left Trigger and press the Menu (Start) Button.
Show Pause Screen
(Alternate)		  and  Not available for Xbox and not recommended for iOS (see alternate 3 or 4)

Hold down the Left Trigger and press the View (Back) Button.
Show Pause Screen
(Alternate 2)		  and  Not available for Xbox and not recommended for iOS (see alternate 3 or 4)

Hold down the X Button and press the View (Back) Button.
Show Pause Screen
(Alternate 3)		  and  Hold down the Left Trigger and click (press down) on the Left Thumbstick.
Show Pause Screen
(Alternate 4)		  and  Hold down the Left Trigger and click (press down) on the Right Thumbstick.

Feed

This section details how SG-1000 application instances can be added to feeds.

Types

Two Sega SG-1000 application types are available, each offering different trade-offs in compatibility, features, and system resource requirements. Libretro Genesis Plus GX is the default (⭐) and is mapped to the sg1000 alias. The default can be overridden globally in Settings > Applications, or on a per-item basis in the Feed Editor.

Name Type Filters Cheats Low CPU
Libretro Genesis Plus GX ⭐ retro-genplusgx-sg ✅ ✅
Genesis Plus GX genplusgx-sg ✅

Properties

The table below contains the properties that are specific to the SG-1000 application. These properties are specified in the props object of a feed item.

Property Type Required Details
cheat URL No URL to a cheat file for the current ROM. See the Cheats Tab in the Item Editor for details on assigning cheat files.

(Libretro Genesis Plus GX only)
pal Boolean No Whether to force PAL video mode for the specified ROM.
rom URL Yes URL to a SG-1000 ROM file or a zip file containing a ROM file.
zoomLevel Numeric No A numeric value indicating how much the display image should be zoomed in (0-40).

This property is typically used to hide the black borders that are present on some games.

Example

The following is an example of a complete feed that consists of a single SG-1000 application instance (type value of sg1000). The rom property value is a URL that points to a Dropbox location that contains the excellent homebrew game Cheril Perils Classic by Mojon Twins.

{
  "title": "SG-1000 Feed",
  "longTitle": "Sega SG-1000 Example Feed",
  "categories": [
    {
      "title": "SG-1000 Games",
      "longTitle": "Sega SG-1000 Games",
      "items": [
        {
          "title": "Cheril Perils",
          "longTitle": "Cheril Perils Classic",
          "type": "sg1000",
          "props": {
            "rom": "https://dl.dropboxusercontent.com/s/53dldjpzutby596/cheril_perils_ntsc.sg"
          }
        }
      ]
    }
  ]
}

This example can be tested by adding a feed with the following URL within the webЯcade player:

https://tinyurl.com/sample-sg1000-feed

References

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