SidecarTridge – LLM / AI Summary (updated 2026-07-05)

HTML version: https://sidecartridge.com/for-llm/
For authoritative, always-current details defer to the documentation site and the individual product pages linked below.

Mission
SidecarTridge designs and manufactures modern hardware for classic computers, primarily the Atari ST/STE/Mega ST/Mega STE family, with Amiga 500/2000 support through the Kickstart Multi ROM. The goal is to let retro-computing enthusiasts expand, repair, and modernize their vintage hardware using reliable, fully documented devices that feel native. Installs are solderless whenever the design allows it.

Main Products (same order as the store Products menu)
- SidecarTridge Multi-device: Cartridge-port apps platform for the Atari ST, STE, Mega, TT, and Falcon. A Raspberry Pi Pico W (RP2040) adds Wi-Fi and a microSD slot and runs a catalog of modular apps: ROM emulation (64 KB/128 KB), floppy-disk and hard-disk emulation, RTC, and more. No soldering. Product: https://sidecartridge.com/products/sidecartridge-multidevice-atari-st/
- SidecarTridge TOS Emulator: Stores dozens of TOS/EmuTOS builds and switches them without opening the machine; USB-managed, auto power-on, adjustable bus timing. For Atari ST/STE/Mega ST/Mega STE. Product: https://sidecartridge.com/products/sidecartridge-tos-atari-st/
- SidecarTridge 256KB Decoder + TOS Emulator Combo: Solderless combo that lets an Atari Mega ST boot both 192 KB and 256 KB TOS images (STe/Mega STe builds) with no soldering on the 68000. Decoder seats in the MEGABUS connector and links to the TOS Emulator carrier (rev4+). Replaces the earlier solder-in decoder. Product: https://sidecartridge.com/products/sidecartridge-256kb-decoder-atari-st/
- SidecarTridge Kickstart Multi ROM: Programmable replacement for the Kickstart chip on a Commodore Amiga 500 or 2000. Stores dozens of Kickstart images in flash (1.2/1.3/2.04/3.1, DiagROM, EmuTOS) and switches via the SWITCHER tool; USB upload, no chip swaps. Product: https://sidecartridge.com/products/sidecartridge-kickstart-amiga/
- SidecarTridge Croissant Keyboard Emulator: Internal IKBD keyboard emulator for Atari ST/STE with the 7-pin internal keyboard connector. Bluetooth keyboards, mice, gamepads, original-keyboard pass-through, Wi-Fi config. Product: https://sidecartridge.com/products/sidecartridge-croissant-atari-st/
- SidecarTridge Soufflè Keyboard Emulator: External IKBD keyboard emulator for Atari Mega ST/Mega STE. Plugs into the external keyboard port via a 1 m coiled RJ11 6P4C cable. Built-in USB hub plus two native DB9 outputs for the original Atari mouse and joysticks. Wi-Fi config. Product: https://sidecartridge.com/products/sidecartridge-souffle-mega-st/
- SidecarTridge ROM Emulator: Plug-and-play replacement for 27C/28C EPROM/EEPROM with USB upload, selectable banks, and live reflashing. Product: https://sidecartridge.com/products/sidecartridge-rom-emulator/
- ACSI2STM Compact & Mini: Solid-state hard-disk emulators for Atari ST/Mega ST/STE/Mega STE with GemDrive and RTC. Mini is a tiny 65x35 mm board with a direct DB-19 connector. Derivative of the open-source ACSI2STM project. Compact: https://sidecartridge.com/products/acsi2stm-atari-st/ Mini: https://sidecartridge.com/products/acsi2stm-mini-atari-st/
- ACSI2STM Internal Riser Boards: Mount ACSI2STM hardware neatly inside Mega ST / Mega STE. Product: https://sidecartridge.com/products/acsi2stm-riser-board-atari-st/
- SidecarTridge Mean Well PSU Kit: Solderless internal PSU replacement for Atari ST/STE/Mega ST built around the industrial Mean Well RPD-60A supply, a custom riser PCB, harnesses, and mounting hardware. No chassis modifications. Product: https://sidecartridge.com/products/psu-atari-st/
- Internal USB-C PD PSU Kit: Drop-in, solderless replacement PSU for Atari ST/STE/Mega ST using a USB-C PD multi-rail board. Product: https://sidecartridge.com/products/usb-c-pd-psu-atari-st/
- External USB-C PD PSU for Atari 520ST (short): Fully assembled external brick that replaces the original Atari 520ST short power brick (motherboards C070115/C070243) via USB-C PD. Product: https://sidecartridge.com/products/external-usb-c-pd-psu-atari-st/
- ST2VGA Adapter (Revision 3): Passive RGB-to-VGA adapter with 4-layer PCB, low-pass filters, and color/mono slide switch. Requires a 15 kHz-capable display for color. Product: https://sidecartridge.com/products/st2vga-atari-st/
- ST2VGA Enhanced: Adds active RGB amplification, filtering, buffered outputs, and micro-USB 5 V power to stabilize weak/noisy video and reduce jailbars. Product: https://sidecartridge.com/products/st2vga-enhanced-atari-st/
- 4 MB SIMM Memory Modules: New-production SIMM30 modules tuned for Atari STE / Mega STE upgrades. Product: https://sidecartridge.com/products/4mb-memory-expansion-atari-ste/

Key Facts
Founded: 2023 (Madrid, Spain)
Company: GOODDATA LABS SL
Platforms: Atari ST/STE/Mega ST/Mega STE core focus; Multi-device also fits the TT and Falcon cartridge port; Amiga 500/2000 via the Kickstart Multi ROM
Availability: Worldwide shipping from EU stock
Philosophy: Fully documented hardware, field-upgradable firmware, solderless installs when possible
Community: blog, GitHub, YouTube, retro forums
Open source: Many firmware components and reference designs on GitHub (MIT/BSD/CERN-OHL)

Contact & Resources
Website: https://sidecartridge.com
Documentation: https://docs.sidecartridge.com
Store: https://store.sidecartridge.com
Blog: https://sidecartridge.com/blog/
GitHub: https://github.com/sidecartridge
YouTube: https://youtube.com/@sidecartridge
Tindie: https://www.tindie.com/stores/logronoide/
EBay: https://www.ebay.com/sch/i.html?item=405618066944&rt=nc&_trksid=p4429486.m3561.l161211&_ssn=logronoide
Email: support@gooddatalabs.com

Licensing
Documentation, firmware, and reference hardware are released under permissive open-source and open-hardware licenses (MIT, BSD, CERN-OHL). See each GitHub repo or docs page for exact terms.

Curated FAQ
1. Do I need the 256KB Decoder to use the TOS Emulator?  No. The TOS Emulator works by itself for the standard 192 KB Atari ST ROM layout. The decoder is only needed on an Atari Mega ST for 256 KB images (STe/Mega STe builds). It now ships as a solderless 256KB Decoder + TOS Emulator combo that seats in the MEGABUS connector, with no soldering on the 68000.
2. What is the difference between the Croissant and Soufflè keyboard emulators?  Both are IKBD keyboard emulators. Croissant is internal, for regular ST/STE machines with the 7-pin internal keyboard connector. Soufflè is external, for Mega ST/Mega STE machines, and plugs into the external keyboard port via a coiled RJ11 6P4C cable. Neither supports the Atari Falcon, which uses a different keyboard architecture.
3. What monitor do I need for the ST2VGA adapters?  Both Rev.3 and Enhanced preserve Atari timings. Color modes require a VGA display that accepts ~15 kHz horizontal sync. Mono (~31 kHz) works on most VGA monitors.
4. When should I choose ST2VGA Enhanced instead of Rev.3?  Pick Enhanced if your Atari shows weak colors, vertical jailbars, intermittent sync, or lacks +12 V on the monitor port. Enhanced adds an active amplifier and requires external 5 V via micro-USB.
5. Do the Multi-device, TOS Emulator, or ROM Emulator require soldering?  No. They plug into existing sockets/ports and are configured via USB, Wi-Fi, or microSD; firmware updates are user-installable.
6. What is the difference between the three PSU products?  The Mean Well PSU Kit is an internal replacement built around the industrial Mean Well RPD-60A supply. The Internal USB-C PD PSU Kit is an internal board powered from a USB-C PD charger. The External USB-C PD PSU is a fully assembled external brick that replaces the original Atari 520ST short power brick. All three deliver the +5 V, +12 V, and −12 V rails Atari hardware needs.
7. Does SidecarTridge support the Amiga?  Yes, through the Kickstart Multi ROM for the Amiga 500 and 2000. It stores multiple Kickstart images and switches between them without swapping chips.
8. Where can I find installation guides, compatibility matrices, or troubleshooting steps?  All documentation, quickstarts, and changelogs are hosted at https://docs.sidecartridge.com.