MSX++ quick reference

Introduction

So, I bought an SX1-mini+. (I later found out it's revision 6.5 (Feb-2022) with KdL firmware v3.9.) It's a great little MSX2+-like device. Plug in a μUSB adapter, PS/2 keyboard, VGA cable, a FAT16-formatted μSD card with some apps -- and you're on your way.

With the device, I received a Google Drive link with manuals. The manuals helped me on my way initially, but I was struggling to find out how to use all this nifty device's extra features: SMART commands, Wi-Fi, tape/cassette, MIDI out, Nextor DOS via SD-BIOS - and more!

The result of my searches is documented here; I hope it is useful for others. I've tried describing it for all OCM-PLD/MSX++ devices. Since Autumn 2023 I also own an SX2 with firmware 3.9.1. For the others I had to go by documentation. Corrections/PRs are welcome!

Contents

• Q&A
• Howtos
• tools
• MegaSD vs. Nextor
• CPU Speeds
• dipswitches
• keymapping and key combos
• keyboards vs. charsets
• Developing & tool usage
• open questions
• wishes
• limitations:
  • not-emulated features
  • comparison to openMSX Boosted_MSX2+
• slot layout