MSX Floppy Disk Controller

A floppy disk controller cartridge for MSX systems, designed for reliable disk access and straightforward integration.

Features

• WD37C65 floppy disk controller
• Integrated BIOS stored on W27C512 EEPROM
• Address decoding via 74LS138
• Signal conditioning using 74LS04
• 16MHz oscillator for stable timing
• Compatible with standard MSX cartridge slots

Use Cases

• Connecting and using floppy disk drives
• Running disk-based MSX software
• Expanding storage options for MSX systems

Specifications

• Controller: WD37C65
• ROM: W27C512 (BIOS)
• Logic: 74LS138, 74LS04
• Clock: 16MHz oscillator
• Interface: MSX cartridge slot

A practical solution for adding floppy disk support to MSX systems.

O4MEGA - 4MB RAM Expansion for OMEGA MSX

The O4MEGA is a high-quality memory expansion board specifically designed for the OMEGA MSX computer. This expansion allows you to upgrade the native 512KB RAM to a full 4096KB (4MB) of RAM—the maximum capacity supported by the MSX mapper architecture.

Key Features:

• Massive Capacity: Increases total system memory to 4096KB RAM.
• Seamless Integration: Plugs directly into the dedicated J12 header on the OMEGA motherboard.
• Simple Assembly: Designed with a "Through-Hole" philosophy for easy DIY soldering (no SMD components or specialized programming required).
• Flexible Configuration: Can be populated with fewer SRAM chips (e.g., AS6C4008) to achieve 2048KB if a full 4MB is not required.
• Compatibility: Specifically engineered for the OMEGA MSX system, utilizing its integrated mapper circuitry.

Technical Specifications:

• Memory Type: Utilizes low-power AS6C4008 CMOS SRAM.
• Installation: Direct connection via J1 connector to the OMEGA's J12 port.
• System Support: Fully recognized by MSX2+ BIOS; functional in MSX2 environments (though boot-up counts may vary by BIOS version).

Note: This is an essential upgrade for OMEGA owners looking to run memory-intensive software, RAM disks, or advanced MSX applications.

This product is the keyboard PCB for the Omega Home Computer / MSX2-compatible Omega system. It is intended for builders who want to assemble the keyboard themselves and complete their own Omega MSX setup.

The PCB is supplied as a bare board only. All switches, keycaps, connectors, and electronic components must be sourced and assembled separately. The layout follows the original Omega Keyboard design and is suited for hobbyists and hardware builders working with classic MSX-style hardware.

Features

• Based on the open-source Omega Keyboard design
• PCB only, no components included
• Designed for Cherry MX-style switches
• Intended for use with the Omega MSX system
• Suitable for self-build projects and custom assembly

MSX Unimapper by RBSC

Unleash the full potential of your MSX system with the Unimapper cartridge.

• Universal Compatibility: Works with Konami 4, Konami SCC, ASCII8, and ASCII16 mappers.
• High Capacity: Supports ROM files up to 512KB.
• Reliable Design: Based on the robust open-source architecture by the Russian Bear Service Crew (RBSC).
• Plug & Play: Ideally suited for running various software and games on compatible MSX hardware.

The MSX Spider Flash Cart is a simple and effective solution for MSX enthusiasts looking to create their own custom ROM cartridges. This high-quality PCB allows you to flash and run ROM files directly on your MSX hardware without the need for traditional EPROMs.

Key Features:

Broad Compatibility: Supports 8kB, 16kB, 32kB, and 48kB ROM files.

Easy to Program: Uses the SST39SF040 flash chip, which can be programmed directly on your MSX using the WRTSST.COM utility.

Flexible Setup: Features jumpers to easily select the desired memory bank and configuration (CS1, CS2, or CS12).

DIY Friendly: A straightforward build for hobbyists—just solder the components and you're ready to go.

Compact Design: Fits into standard MSX cartridge cases.

What’s included:

1x MSX Spider Flash Cart PCB (High-quality finish)

Note: Components (Flash chip, capacitor, etc.) are not included unless specified.

MSX RAM & Serial PCB (DIY Edition)

This is the bare PCB for the b3rendsh RAM-Serial project. This versatile board can be configured as a memory mapper, a dual serial interface, or both, depending on the components you choose to install.

Product Features:

• High-Quality PCB: Durable finish with clear silkscreen labeling for easy component placement.
• Configurable Layout: Supports a 512KB Gouget-style memory mapper and dual 16550 UART serial ports.
• Documentation: Built following the open-source designs available on GitHub.

Available Add-ons:

You can customize your order by selecting the following options to add to your cart:

• 512KB RAM Component Kit: Includes all necessary electronic components (RAM chip, logic ICs, capacitors, and resistors) to build the PCB as a RAM-only module.
• 3D-Printed Cartridge Case: A dedicated MSX-HWS enclosure designed specifically for this PCB. This case is the closed version, optimized for the RAM-only configuration.

Please Note:

• The base price is for the bare PCB only.
• To receive the parts or the enclosure, please select them from the options menu before adding the item to your cart.
• Assembly (soldering) is required.

A reliable foundation for building your own custom MSX memory expansion.

Bare PCB for Omega MSX system builds

This product provides the mainboard PCB for the Omega MSX, an open hardware MSX2-compatible computer design by Sergey Kiselev.

The PCB is intended for users who want to assemble their own Omega MSX system. It includes the full mainboard layout with support for standard MSX components such as CPU, VDP, memory, and expansion interfaces. All components must be sourced and assembled separately.

The design follows the original Omega specification and is suitable for hobbyists, developers, and hardware builders familiar with MSX architecture and through-hole assembly.

This offering is for the PCB only. No components, connectors, or pre-assembled parts are included.

Notes

• Based on the open-source Omega MSX design
• Requires full component population and assembly
• Suitable for experienced builders
• Compatible with standard MSX2 component configurations