Exist ZX 48K core?

Hi!

I want to use own ROM for ZX Spectrum.
This ROM is for ZXS 48K only.
Exist any ZXS 48K core?
Or if not, is possible to have on SD card ZXS core twice and for each use separate ROM?

Thank you for help.
Miro

Sadly your attached core works not.
I used 16K and 32K ROMs, no one works.
I named ROM file spectrum.rom, spectrum48.rom, spectrum48k.rom

Maybe I do mistake, if, please let me know.
Miro

Ok, I aded RAR archive with ROMs (select one of them) to embedd into core and one CSW game with link to others.

Thank you very much for your work.
Miro

Ok, if you did no other changes, please attach core - I'll test it after weekend.

I found also TAP2CSW converter, but it supports CSW v2 format instead v1.1 with RLE compression - v1.1 was used in attached game which was working, each converted program by thi tool works not - maybe is reason really v1.1 vs v2...

I'll try all.
Thank you very much!

Miro

Ok, I'm back.
I try core and ask Czechoslovak scene for hardware details of Didaktik M.
Later write.
Miro

So, I tried Didaktik M core.
When I load it (by menu) as first it hangs:

If I load before Didaktik core ZX Spectrum 48K core you created, it uses ZXS ROM:

look at core vs bootscreen:

So, ZXS48K core works, Didaktik not yet, but today I ask for whole chipset on Czechoslovak forum.
Thank you for doing core.

Miro

My firmware is dated to 160910 - and again same results like before.

Miro

Again same result, tried to format FAT and FAT32. Really don't understand - but on your screenshots I see that your firmware is older...

Miro

Again same problem:
When I select Didaktik core first, it hangs.
If I load before Didaktik core the ZX Spectrum 48K core (created by you), it uses ZX Spectrum 48K ROM and hangs not.
Is problem in loading ROM into core? Other reason I don't know - when was ZXS ROM loaded it uses that, if not, it hangs...

Miro

Hi!

What now?

Miro

Thank yooou!

Works even it uses ROM 1993...

Thank you very much.

I have last 2 Qs:
Can I publish it on Czechoslovak scene under your name as creator?
Can you tell me your name?

Again thank you very much.
Miro