Yamaha YM1249 / YM2149 ??

[prolog]

Just me again full of questions and no answers,

The sound generator on the RWAP website (if that is the source of the sound on the video on the zx81 page) is listed as the Yamaha YM1249. It certainly sounds authentic to what I recall from days of yore.

But, I found this site listing obscure 80s sound chips and it refers to a YM2149 as opposed to 1249 -

http://www.srcf.ucam.org/~rga24/computer/music/

Has there been a keying error or are we talking about different chips?

cheers
Jeff

[Andy Rea]

I think it's a typo, the YM2149 is the chip used on the ZXpand AY-module.

Andy

[prolog]

thanks once again Andy. The AY sound module is on my shopping list. I think I picked up somewhere on here it could be used with midi - but I'll park that for another day. I have a yamaha midi board and an old 80s Casio synth - would be nice to use the AY sound module in tandem with some other sound generators.
cheers
Jeff

[sirmorris]

Hi Jeff,

If you have a zx81 midi interface then I'm sure that something could be wired up, but there's no built-in midi support on the ay board, sorry

C

[prolog]

Hi Jeff,

If you have a zx81 midi interface then I'm sure that something could be wired up, but there's no built-in midi support on the ay board, sorry

C

Not to worry, I just like the sound of the AY - I'm sure I'll find another way to get it to trigger (audio output jack from the tv to an anlog/digital i/o mixer for example?? Should work..hmmm) I'll have fun trying anyway!

cheers
Jeff

[sirmorris]

There are 16 general purpose I/O pins broken out from the AY chip plus 5 lines which serve as the joystick so there's no shortage of IO on the zxpand to use to read triggers..!

There are plenty of people here, myself included, who would be only too eager to help out with little projects like this

In fact, oh no here it comes, I just caught myself thinking of adding another AY via the IO and a couple of flying leads...

[Andy Rea]

There are 16 general purpose I/O pins broken out from the AY chip plus 5 lines which serve as the joystick so there's no shortage of IO on the zxpand to use to read triggers..!

There are plenty of people here, myself included, who would be only too eager to help out with little projects like this

In fact, oh no here it comes, I just caught myself thinking of adding another AY via the IO and a couple of flying leads...

and another...

and another...

and another...

might be a bit tricky keeping track of all those layers..