[sdiy] just when you think DIY spirit is fading out

[Mike Bryant]

It went through many successions over the years, first a mixture of Z80s and 6802s, then some AMD2901 bit-slices for the tone generators, then Intel 386, then SHARCs until finally an FPGA based system.  But I'm currently reducing this to something more software on ARM based. 

I think I still might have the original pair of 2716s that had the sinewave programmed in them somewhere.  Have to see if they've retained the data like the other guy's doorbell.



-----Original Message-----
From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of Kenny Balys
Sent: 19 October 2021 19:53
To: synth-diy at synth-diy.org
Subject: Re: [sdiy] just when you think DIY spirit is fading out


I wept a little from the coolness of this.

You can get a PiDP-11 setup if you still have a VT-100 kicking around somewhere and a sack of EPROMs and do it again! :)



On 19.10.21 18:30 , Mike Bryant via Synth-diy wrote:
> A PDP-11 in Southampton Uni was the first time I programmed a synth in software.  Nowhere near real time, but it had a couple of oscillators, a level envelope and a simple digital filter (which were almost unheard of back then).  Output was a file that I programmed into a 2708 EPROM and then played back on some homebrew hardware and a discrete resistor 4 bit DAC, varying the clock frequency to set the note.
>
>
> -
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