Check the listing for details. Gigatron TTL Computer Pre-programmed ROM v5a. Listed at 19.00 USD. Gigatron Pre-programmed ROMVersion 5a - Latest This is the latest released Gigatron ROM version needed to build your own Gigatron TTL Computer!The Gigatron Software ROM is loaded onto a 27C1024 EPROM that can be erased and reprogrammed if a new version is released. The Gigatron computer is constructed completely with TTL Logic - no microprocessor chip! Although there is no discrete CPU chip, the TTL logic forms a powerful 8 bit computer The Gigatron website (gigatron.io) hosts fantastic step by step assembly instructions, assembly videos and a complete Bill of Materials. See my other auctions or the Legacy Pixels website for other great Gigatron items, including complete kits, pre-programmed ROMs and fully assembled Gigatron Computers! What's Included in this auction: - 27C1024 EPROM Loaded with Gigatron V5a Software Legacy Pixels boards are professionally built and tested in the great state of Ohio, USA Your purchase will be carefully packed in bubble wrap and mailed in a sturdy box to ensure safe arrival (no "bubble-opes”!) Shop with confidence from highly rated, long term US based seller.Please contact me if you have additional questions. US Shipping:USPS Ground Advantage: $5USPS Priority: $10 International Shipping:Varies via Ebay Global Shipping Program _gsrx_vers_1436 (GS 9.0.5 (1436))