Looking for YM5214 MMC replacement

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By Alexey

Guardian (3285)

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11-11-2021, 21:01

I've got a package with the board from Philippe. Thanks! Now I am waiting for Altera EPM240 chip. This chip is 3.3v rated, I wonder can I use 5v rated USB blaster to flash it? And should I connect separate 5v to the board so that the Altera chip could be properly powered via the on-board 1117 3.3v regulator?

By MetalGear22

Supporter (6)

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11-11-2021, 23:35

Bonjour Alex,
The regulator is essential.
It supplies power to the EPM240 during programming.

By Alexey

Guardian (3285)

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12-11-2021, 10:13

Good to know. But the cheap Chinese USB Blaster does not provide power for the chip, all previous Altera chips that I dealt with required external power to be supplied to the board. Or do I program the chip when the board is installed in a powered up computer?

By MetalGear22

Supporter (6)

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12-11-2021, 10:49

Hello Alex,

Alexey wrote:

Or do I program the chip when the board is installed in a powered up computer?

Yes

By Alexey

Guardian (3285)

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23-12-2021, 17:42

I finally assembled, programmed and tested the YM5214 replacement board from MetalGear22. The MSX is now alive! It still has some other issues (keyboard and PSG are busted), but the machine starts and can run games.

Many thanks to MetalGear22 for his excellent project! I hope this project is going to be published and the boards could be ordered from the author or authorized manufacturers.

By MetalGear22

Supporter (6)

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23-12-2021, 22:16

Congratulations ...

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