Thanks is due to many people for making this simulation possible. 
The creator managed to get a beta version released within one week of starting this project thanks to all the work done by others before him.

First, thanks to General Instruments (now Microchip technology) for creating the chip in the first place.

Thanks to the work of Greg James and Christian Sattler for turning a physical chip into a digital die photo
Find it here at: (http://www.visual6502.org/images/pages/GeneralInstruments_SP0256_012_die_shots.html)
The die photo is copyright of the visual6502 team, I never actually asked for their permission to use it but I'm confident they'll approve with appropriate attribution.

BIG thanks to JohnPCAE for cleaning up and highliting the die photo, which as I know from experience, takes several months of repetative work. Instead of months
it took me about a day and a custom python script to get it into the simulation.
His post on it is here: (http://atariage.com/forums/topic/252738-intellivoice-sp0256-die-shot-cleaned-up/?hl=%2Bsp0256#entry3642287)

Also thanks to intvnut for sharing his reverse-engineering work on that thread, I used his labeled instruction decoder PLA to track which
OPcodes are executing.

Thanks to Joe Zbiciak and Frank Palazzo (one of whom may be intvnut) for their reverse-engineering work here: (http://spatula-city.org/~im14u2c/intv/tech/sp0256_instr_set.html)
done over 17 years ago! These prior efforts will come in VERY handy in debugging/REing the simulation.

Thanks to whoever wrote this page (www.cpcwiki.eu/index.php/SP0256) of the CPC wiki which put multiple reverse-engineering efforts and datasheets into
one place. I feel kinda spoiled, there was no need to hunt them down!

Thanks to Cole Johnson (oh thats me!) for processing the highlighted die photo into javascript files and fixing ~two dozen bugs in the source image 
and image processor already.

Thanks to the visual6502 team (visual6502.org) for creating the ChipSim simulator code at(https://github.com/trebonian/visual6502), 
as well as organizing die photo acquisitions.

Thanks to RetroChallenge 09/2018 for making think "yeah lets do this" instead of "I guess I could" (hopefully that competitive spirit doesn't push me into doing anything stupid)

Lastly thanks to TheProgrammerIncarnate for his beautiful AY-3-8500 PONG chip simulation. (https://gitlab.com/TheProgrammerIncarnate/VisualP0NG/tree/master)
and his image processor used to create the source files and (importantly) aid in debugging them. The most wonderful cleanly commented lines of code
I have ever seen. It took only a little modification to get another chip working due to his brilliant design. (Thats me if you haven't figured it out ;)