Use emulators. Much easier and fun because you don' have to deal with real hardware
(Get and MSX 2+ or a TurboR (16-bit) - as an emulator - btw)
(Get and MSX 2+ or a TurboR (16-bit) - as an emulator - btw)
At least get a driver emulator hw that reads from SD/CF or maybe USB drives ;)
Great way not to miss that oxidation and faulty connections.