The 255(FF) segment is placed on page 01 by EXOS to manage its contents, but you will use the SPEEK command, so it is like if you were managing the segment on page 00: from 2374 dec to 4693 dec.

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El segmento 255(FF) es colocado por EXOS en la página 01 cuando maneja su contenido, pero tú  vas a usar el comando SPEEK, por lo que es como si manejases el segmento en la página 00, desde 2374 dec a 4693 dec.

Esetleg bekukucskál(SPEEK) a SOUND csatorna pufferre?

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Maybe peeking(SPEEK) at the SOUND channel buffer?

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¿Quizás ojeando(SPEEK) en la zona de trabajo del canal SOUND?

WARNING! Don't try to format a Flashair SD(or other similar product) or you will broke it! they can't only be formatted with the same format and structure they came from stock, even can't allow partitions.

How I know it? practice on serial killing.... I have a private graveyard of them....

Great. Have you looked at LGB's Z80 ports list?

Since the time he created the list, other hardware have taken position, for example, SF3 uses 20-2F and 40-4F ranges(incompatible with the Spectrum Hardware emulator).

I see you use F8h and B8h as communication ports. Good selection, single unused ports, but you must re-assure that these are not mirrors ports of other nearer ports, from the RTC card or Dave.

Usually, a wealthy EP returns 255 from an unused port(for example "PRINT IN(XX)"  ), but I don't know how to test a port on Output.

I have seen similar solutions, the best one is the ZX Spectrum Interface 1 Bis, a modern approach to the Microdrives... as partitions on a micro-SD.

It also has a micro-USB port that you can connect to a PC, where a daemon app interacts with the Interface.

The interface connected to the Spectrum has a modified Rom with a special driver to manage a directory on the PC so, from the user point of view, a very big storage unit can be managed at high speed. Along storage, there are also other valuable options, like a virtual printer and Internet connection through the PC.

If I remember well, the linked page has some sources of the files used.

I have published two new short videos about the SF3 development. This time is again about Midi, but with a difference. Scoretrack, the program inside the Rom of the never released Enterprise MIDI cartridge interface, was able to play some already made songs(MIDI OUT), but has limited use because its editor is broken, and we don't have an external song converter for it.

Then I thought about some software from CPC or MSX, but first their standard MIDI interfaces have to be emulated by the SF3.

Starting from the CPC scene, there are some MIDI interfaces, but only one is totally documented and with software: EMR Miditrack Performer, with the same UART chip used than the Enterprise MIDI interface attempt.

Some weeks ago Hans managed to emulate the EMR CPC interface on the SF3, so I asked Hans the same on the Enterprise SF3. Then I passed the EMR Miditrack Performer software to Geco, that has managed to convert it at least to work on his own CPCemu. This is what you will see on the videos, Hans&Geco's magic.

The program is slightly faster on the Enterprise, about a 13%, so I have modified the beats per second on it to test it at the side of the CPC...

Don't expect a complete sequencer/player on it..... only weights 8KB, but what it intents to do is correctly done. It works like a cassette player recorder, but for Midi streams instead of sounds. But it can record 8 different tracks, and also mix incoming midi with the data in memory, so it can give a lot of entertainment.

On the other side... again its files aren't standard Midi files, you can't play here your collection of Midi songs. But.... you can record them instead, and then save the songs as EMR files. I have already made the test and it saves  the incoming song.

https://www.youtube.com/watch?v=fHJ694FttD4

https://www.youtube.com/watch?v=LtfeFkSeBTs

I hope that Geco's next step with the software would be a real conversion.

Yes, it needs to connect to the rear of the SF3, sorry....

Hans has designed it to sit on one of the slots on the Bus expander(CPC or EP), but it only draws +5v and ground from the slot. I think it can work even with 3X1,5v cells or with an external +5v power supply. It is a good idea to put it on a box near the SF3 adapter.

Fist I will try the PCB on a little batch of 5 interfaces, if it is error free, Hans will release the gerbers(the PCB design to order from China).  

We think it is the best solution, because it is easy to build and the parts can be found on every country. We all will save on shipping.

Maybe Zozo wants to produce the Midi interface for  Hungarian users. I will make it for the Spanish and near countries users and Hans for the rest.

Of course, other solutions will be welcomed.

I have promoted the last beta update to official, because it fixed one elusive error on Tutus' SF3 after some months of tests and shipping from Hungary to The Netherlands and then return to Zozo's place.

As always, you can find the link to download it on the TMTLogic web page, Support.