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Amstrad GX4000

The Amstrad GX4000 is a third-generation videogame console developed by Amstrad. It was released in 1990, retailing for £99.99 (around $240 USD adjusted for inflation by 2022). Its hardware was based on the then-popular Amstrad CPC Plus computer, and so was compatible with many of its titles. It did not have a keyboard, so any keyboard-based titles were lacking controls (but the original computer had a joystick controller which many games used).

Despite initially earning favorable reviews, it was Amstrad's first and last attempt at entering the console market.

This system scrapes metadata for the “gx4000” group(s) and loads the gx4000 set from the currently selected theme, if available.

The GX4000 itself. We're gonna burn some rubber tonight.

  • Emulator: RetroArch
  • Folder: /userdata/roms/gx4000
  • Accepted ROM formats: .dsk, .m3u, .cpr, .zip, .7z

No Amstrad GX4000 emulator in Batocera needs a BIOS file to run.

Place your Amstrad GX4000 ROMs in /userdata/roms/gx4000.

RetroArch (formerly SSNES), is a ubiquitous frontend that can run multiple “cores”, which are essentially the emulators themselves. The most common cores use the libretro API, so that's why cores run in RetroArch in Batocera are referred to as “libretro: (core name)”. RetroArch aims to unify the feature set of all libretro cores and offer a universal, familiar interface independent of platform.

RetroArch configuration

RetroArch offers a Quick Menu accessed by pressing [HOTKEY] + South button (B SNES) which can be used to alter various things like RetroArch and core options, and controller mapping. Most RetroArch related settings can be altered from Batocera's EmulationStation.

Standardized features available to all libretro cores: gx4000.videomode, gx4000.ratio, gx4000.smooth, gx4000.shaders, gx4000.pixel_perfect, gx4000.decoration, gx4000.game_translation

ES setting name batocera.conf_key Description ⇒ ES option key_value
Settings that apply to all cores of this emulator
GRAPHICS API gx4000.gfxbackend Choose which graphics API library to use. Vulkan is better, when supported.
⇒ OpenGL opengl, Vulkan vulkan.
AUDIO LATENCY gx4000.audio_latency In milliseconds. Can reduce crackling/cutting out.
⇒ 256 256, 192 192, 128 128, 64 64, 32 32, 16 16, 8 8.
THREADED VIDEO gx4000.video_threaded Improves performance at the cost of latency and more video stuttering.
⇒ On true, Off false.

libretro: cap32

Caprice32 is a software emulator of the Amstrad CPC 8bit home computer series running on Linux and Windows. The emulator faithfully imitates the CPC464, CPC664, CPC6128, CPC6128+ and GX4000 models. This is the libretro port of it.

libretro: cap32 configuration
ES setting name batocera.conf_key Description ⇒ ES option key_value
Settings that apply to all systems this core supports
CPC MODEL global.cap32_model
⇒ 464 464, 6128 6128, 6128+ 6128+.
EMULATED RAM SIZE global.cap32_ram
⇒ 64KB 64, 128KB 128, 192+KB 192, 512KB 512, 576+KB 576.

Here are the default Amstrad GX4000's controls shown on a Batocera RetroPad:

RetroPad Amstrad Joystick
South button (B SNES) FIRE1
East button (A SNES) FIRE2
West button (Y SNES) SPACE
North button (X SNES) S
[START] J (to select Joy in games)
Up JOY UP
Down JOY DOWN
Left JOY LEFT
Right JOY RIGHT
L1 INTRO
R1 SHIFT
L2 CTRL
R2 COPY

For further troubleshooting, refer to the generic support pages.

  • systems/gx4000.txt
  • Last modified: 17 months ago
  • by atari