SBTGA Plotter: now with triangle support!

Seen here is the newly enhanced plottest rom, compete with a sort of spaceship made out of (2D) triangles.

(No 3D rendering capacity was used or yet exists in SBTCVM...)

PLRLE Enhancements

The PLRLE format has been upgraded in 2 important ways: 

1. The PLRLE encoder in gfxcon.py, can now perform a form of lossy compression on images. (as seen in the screenshot above)

2. The PLRLE decoder module has been optimized and split into 2 versions: one with alpha colorkey support, and one without. Both with sizable decode performance boosts.

SBTCVM-DOS command line arguments - now with new dosargs module!

Featured here is the newly revised help.txe,

which has all-new command-line arguments via the dosargs SSTNPL module.

SBTCVM-SBTVDI BIOS

The SBTCVM-SBTVDI BIOS fallback menu features SBTVDI Serial access, and the ability to re-attempt boot. With more features to come.

SBTVDI: Disks now directly bootable.

SBTCVM Can now boot directly into SBTVDI Disk images!