Will Sega 315-5560 chip work instead of YMF278B-F for Wozblaster?

Master (147)

15-10-2022, 01:18

I am trying to build Wozblaster, but I can not locate any of YMF278B-F chip, but I managed to locate original Sega 315-5560 chip instead. I know that chip is strip down of the YMF278B-F but will it make the Wozblaster work?

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By sdsnatcher73

Prophet (3851)

15-10-2022, 05:02

No it won’t work.

By alali.ahmed.t

Master (147)

15-10-2022, 06:04

Why not? if it is the same chip

By alali.ahmed.t

Master (147)

15-10-2022, 07:43

I see, different pinout between the 2.

By msd

Paragon (1510)

15-10-2022, 10:57

I only see it has 28 channels of wave or fm. Don’t know how to read that . Can you select that per channel?

Anyway the opl4 has 24 channels of pcm and 18 channels of fm. Besides the pin compatibility you also need register compatibility . Probably possible to make a opl4 music replayed for this chip, but that will require new software

By sdsnatcher73

Prophet (3851)

15-10-2022, 11:18

It’s a different chip indeed, with different pinout. Only internal design is inherited (mainly the PCM Wave part) but it has no FM part.

By alali.ahmed.t

Master (147)

19-10-2022, 04:05

Thanx all for explaining. I am an ambitious beginner

I acquired Sega model 1 sound board and I am intending to see how I can use it on the msx. For now I am thinking of feeding it from the cartridge slot with the needed input. But i am not sure if need to do any chip reprogramming of it. I will share pictures of the board.

If anyone is interested in giving some help, that would be much appreciated.

By alali.ahmed.t

Master (147)

19-10-2022, 06:57