[sdiy] Alesis HR-16 drum machine custom EPROMs

[Gordon JC Pearce]

On Fri, 2011-04-15 at 11:51 +0100, Chris Strellis wrote:
> Sorry for the blatant self-promotion but here I go anyway ;)
> 
> Alesis HR-16 drum machine custom EPROMs
> 
> http://www.strellis.com/alesis.shtml
> 
> Give your 90s digital drum machine a new lease of life with classic 80s
> 8-bit drum sounds!

Good fun! I went for 80s drum machines, Casio VL-Tone and SK-1 drums,
and the Fairlight ORCH5 hit.

http://www.gjcp.net/~gordonjcp/mp3s/hr16.mp3

I've actually written the software to pack 16-bit samples but my EPROM
programmer has packed in so I can't actually test it.  You're welcome to
have a play, once I find which dusty old disk it's on.

The sample names and pointers are encoded in the firmware ROM, with the
samples on 16-byte boundaries.  I haven't figured out where the
"default" values are when you reset the machine, or how the channel
mapping and hihat "choke" settings are stored.

Gordon MM0YEQ