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A full MSX Memory System. 512K of ROM boot code and support software and up to 1MB of paged RAM. With these modules, you can boot into vario
Retrocomputing

Stegosaur MSX ROM & RAM Modules

Sold by Dino Boards

$48.50

$53.35 with tax in United States [change]
Number of RAM Chips (512K or 1024K of Memory)
Stock available: 1
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This product was designed by Dino Boards. By buying this product you support original hardware creators.
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This store ships orders in less than 48 hours, in more than 80% of cases (excluding weekends).

The two modules work together to map in a 512K rom image for booting, and page in the RAM using specific MSX memory mapping techniques.

The 512K ROM image is mapped across a number opf MSX “slots” and “sub-slots” - enabling the storage of BIOS, Operating System and various applications and drivers.

The 2x512K RAM is mapped, using MSX’s memory page mapping, enabling compatible systems and applications the full use of the available RAM.

This module is designed for operation in conjunction with other MSX modules (CPU, GAME, RGB VIDEO, PPI & Keyboard).

Key features

  • 512K ROM Image divided up to support various sub-systems
  • up to 1MB of MSX paged banked memory
  • MSX memory system compatibility

What’s included?

The full kits includes everything you need (2 PCB, capacitors, IC sockets, connectors, and the ICs).

The supplied ROM image will be flash with your choice of 50Hz or 60Hz CBIOS/MSX-DOS image. Additional ROM images are available for download that include MSX-BIOS and MSX-BASIC and configured for different regions.

What else do I need? This module is the core of a MSX configured build. It will only enable a bootable system if you have the required additional MSX modules:

  • Z80 Turbo CPU (or stock RC2014/RCBus Z80 CPU).
  • V99x8 RGB Video Module.
  • YM2149 GAME.
  • PPI & Keyboard.
  • 80-Way lane compatible backplane (eg: Yellow 12+1 backplane, or the Green Stegosaur 10+Slot backplane).
  • Both the ROM and RAM modules must be installed together - they can not operate on their own and must have their 3 pin headers connected.

Key difference with Yellow MSX Memory

Description Yellow MSX Version Green Stegosaur Version
Physical Layout Single PCB for both ROM and RAM Two separate PCBs for ROM and RAM
RAM Included 2x512K (1MB) 512K with optional extra 512K
Backplane Requirement 80 Way RCBus or RC2014 via external Jumpers Wired permanently to 80 Way RCBus 'User' lanes (37-40, 77-80)
PCB Height 8.0 cm 5.5 cm
Colour Yellow Green

Links to code and documentation

Documentation (dinoboards.com.au)

Shipping policy

Normally shipped next working day, however during busy periods this may extend slightly.

It is your responsibility to pay any import duty or other taxes where appropriate, unless specified below:

For EU locations:

* Please see Lectronz's Terms and Condititions (https://lectronz.com/pages/terms_and_conditions)

* For order 150 EUR or over, it will be your responsibility to pay any import duty or other taxes where appropriate.

For USA:

A 10% Tariff tax is applied at checkout.

Tariffs are prepaid by me prior to shipping. You will not incur any additional tariff charges, upon receipt of your package.

For Australia:

Registered for GST. Prices are listed exclusive of GST. GST of 10% is applied at checkout.

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The seller

Dino Boards

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Melbourne, Victoria, Australia
13 orders since Sep 13, 2024
Reliving the 80s thru retro computing