Wow. That's so great! Thanks very very much
Well.. SG-1000 was similar to Colecovision and MSX 1... Any chance to see it in MiST?
Gehstock was working on a SG-1000 core but as far as I'm aware, he had no success so far.
The SG-1000 core could be added on top of the Master System core, like Kevtris' did on the Analoge Nt mini. Basicly, a SG-1000 is a Master System with a different VDP (TMS9928A instead of YM2602B ). That's why the Master System is backwards compatible to the SG-1000 and only the colour palette is a bit off
. In this case, bigger changes in the VDP code would be necessary to make SG-1000 games run. Master System games can have either video modes 0-3 or 4. I believe the current Master System core only supports video mode 4 and SG-1000 games require the other video modes.
Another way would be to add SG-1000 support to the MSX core. In this case, only the sound chip SN76489 would need to be added. The VDHL source for adding this chip to MSX is already available: viewtopic.php?f=117&t=34071
SG-1000 roms could then be loaded from the command line on MSXDOS via a romloader.