SD Music card firmware improving now
Dear Customers,
I doing for upgrade firmware of SD MUSIC card.
In this time, I learned a lot more about AY3-910 hence,
It would a good time to apply it to my previous SD Music card.
I can promise that New firmware could have below functions.
1) Support Envelope but still limited on the noise channel
As you may know, AY3-8910 have 3 noise channel and our Mockingboard have two sets of AY3-8910
Hence, the total Noise channel required already 6.
But, YM2413 chip has 9 music channels but, it doesn't have noise effect itself.
To generate Noise on Music card, I used the 9th channel and assigned it to Noise Instrument.
So, it has only one noise channel hence if the program used a noise channel with an envelope, it would influence another Noise channel too so it would have a different sound.
2) More noise channels, As above YM2413 having a lack of channel to emulate AY3 8910 hence, I will assign three channels for noise. In fact, needs 6 channels. but, I will try my best to express noise channels
3) Due to only available 6 channels for voices, it will be assigned all for Mockingboard channels, Hence 3 Chorus channel should be removed so the sound would be different on Music compare to the previous firmware.
4) User firmware updates, After this function prepared, Users can update to the new firmware.
5) User support functions would be added to control YM2413.
Previous version bare mode doesn't work properly. I will make a new way to control Ym2413.
So It would be much better to play music and game effects.
And If a user board needs to add a noise filter, I will do it free of charge.
I need your card in my hand to update new firmware and for the filters.
Sorry for this.
I will notify you when I ready for this.
Thanks for your waiting.
Ian Kim