[sdiy] SN76477 & SN94624/TMS9919

[Mattias Rickardsson]

At 04:20 2005-02-27, anthony wrote:

>Every now and then I think it might be cool to have a 76477 for  at least 
>a fun noise maker.
>I was wondering if these things are easilly/cheaply had these days.

I got one on eBay a month ago, with datasheet & unopened original 
packaging, for under $10 I think:

         http://www.analogue.org/mr/sas/sn76477n_1_liten.jpg
         http://www.analogue.org/mr/sas/sn76477n_2_liten.jpg

Were they often packaged & sold by Radio Shack?

>I have a SN94624/TMS9919

What's that?

>that I'm trying to figure out how to play with without hooking it up to a 
>computer (well I guess a synth is an analogue computer). It's just not the 
>same though. I thought something liek a gated comparator might be a good 
>place to start.
>Soemtimes I think I spend too much time messing with stuff that's just 
>more trouble than it's worth, but oh well.

Something gives me the feeling that you are not the only one... ;-)


/mr