Looking for YM5214 MMC replacement

By Alexey

Guardian (3160)

Аватар пользователя Alexey

16-07-2021, 23:30

I suspect that in one of the CX5M that I am fixing now the MMC controller YM5214 is faulty. I've found the project that successfully replaced that chip with Altera 7128 FPGA:

https://www.youtube.com/watch?v=xgzbE-Q6iHU

The documentation in French can be still found here:
https://web.archive.org/web/20160528130351/http://msxotage.f...

Unfortunately the archive with the firmware is missing and I can't find it anywhere. Does anyone have this archive? The old path is this one:
http://msxotage.free.fr/fichiers_tmp/signaux_ym5214_v7_18_04...

My idea is to recompile this firmware for Altera 7160 FPGA and use the board similar to our YM2148 emulator:
http://rbsc.su/en/completed_projects/#0017_YM2148_Emulator

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By sdsnatcher73

Prophet (2143)

Аватар пользователя sdsnatcher73

17-07-2021, 00:00

Check this site: http://mymsx2.free.fr/menu2_msx.html hardware 03/2014 Remplacement d'un YM5214 ( MSXEngine du MSX1 YAMAHA CX5M ) par un EPM7128. And a video here: http://mymsx2.free.fr/montages/ym5214toepm7128/ym5214toepm71...

Possibly MetalGear2 still has the code.

By Alexey

Guardian (3160)

Аватар пользователя Alexey

24-07-2021, 16:06

Looks like the author decided not to reply to me. This is very sad...

By Pentarou

Champion (389)

Аватар пользователя Pentarou

24-07-2021, 16:52

I have the ym5214_to_epm7128_v7_18_04_2014.pdf, in it there's the equivalent schematic + lots of info.

Do you want it?

By MetalGear22

Supporter (2)

Аватар пользователя MetalGear22

24-07-2021, 17:04

Hello,

@Alexey: Check your mailbox

By Alexey

Guardian (3160)

Аватар пользователя Alexey

24-07-2021, 17:27

Hi Philippe, glad to get in touch! I found the PDF already, but I am missing the archive with the firmware. Would appreciate if you could post it on your website or send it by mail.