SX-1+ Mini with MegaFlashRom SCC+ SD problem(s)

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By 8bits4ever

Resident (48)

Аватар пользователя 8bits4ever

29-01-2021, 16:23

SkalTura wrote:

Daniël from 8Bits4Ever told me that the firmware for the SX-1 Mini+ is not the same as for the SX-1 and won't work properly, so I'm very hesitant to try this...

You can safely use the "1chipmsx" variant firmware from KdL (just keep a USB Blaster programmer at hand for emergency). In any case, if you are having problems with the unit please contact us by email. We are glad to help. Cheers!

By st1mpy

Paladin (735)

Аватар пользователя st1mpy

10-02-2021, 23:17

I was using the sx1+mini quite a lot recently to test the diy sram pac cartridge I'm developing. Now I got it working quite well, I came across a really strange problem (not with a mfr which this thread is about, but I've also used mfr to test games that uses a pac), the problem is only with Psycho world not recognising the pac. I tried all sort of things, then realised it actually works on the real msx. It must be to do with timing (I checked the voltages already, just couldn't be bothered to hookup a logic analyzer).

So what I'm trying to say is, sx1+mini is great (it proved very useful and convenient for what I was using it for) but with all fpga msxs, they do differ from a real machine (like in timing for an obvious reason. Also it has loads of expansion in it like memory and slots used, which sometimes can make some software run differently to a basic 64kb machine), so we can't expect them to be problem free. They can be refined. It is amazing that different msxs don't exhibit this kind of problem since they do differ slightly in design from each other.

By AxelStone

Prophet (2919)

Аватар пользователя AxelStone

11-02-2021, 14:19

This is the key, we can't consider MSX like a single computer, is a whole standard with hundreds of models. FPGAs like OCM / Zemmix / SX-1 / ... are simply new models with their own slots configuration. It's not going to have more or fewer problems than any other MSX model, simply it's another model.

Just for example I had a MSX2+ Panasonic FS-A1WSX expanded internally to 512Kb and it was almos impossible to use MFR because of a lot of write errors in the MFR. The MFR worked perfectly in all models I had except this. Why? I really don't know.

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