Subject: MSX2 Compatible Computer Project Posted by Sergey on Tue
Subject: MSX2 Compatible Computer Project Posted by Sergey on Tue, 23 Jan 2018 21:12:41 GMT View Forum Message <> Reply to Message Hi, I'd like to build an MSX2 compatible computer. I'd like to share some of my ideas, and to get opinion of the forum members. My goals/wishes for this project: Follow MSX/MSX2 standards as close as possible 128 KiB (or more) RAM Yamaha V9938 VDP, 128 KiB Video RAM, composite and component outputs, with optional RGB output (header) The main purpose would be running MSX/MSX2 games. With CP/M, FUZIX, possibly MSX-DOS support being the secondary goal Two cartridge slots for game cartridges and hardware add-ons (e.g. MSX music, disk controller) Use CBIOS Implement a real keyboard. Likely using Cherry MX keys, and standard keycaps (a microcontroller based PS/2 adapter would be a backup option) Design modularity and form factor options (which one would you prefer?): A single board with the entire computer implemented on it. Should be about 200 mm x 160 mm in size. Pros: most compact way, Cons: no modularity at all ECB based system. We already have an MSX (not MSX2) video board, that might somewhat help with developing this project, although a new V9938 based board would have to be implemented. Pros: individual boards can be used for other (non MSX) ECB systems. Cons: more expensive: DIN 41612 connectors, additional bus buffers, etc. Also not as compact Non-ECB backplane based system. Potentially built using 100 mm x 100 mm boards. Pros: cheaper than ECB, no need to adhere to ECB standard, can use some pins for MSX-specific signals (slot select, chip selects).
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