Little demonstration: https://youtu.be/o1rY8HSEAXM Working with floppies today is not only obsolete, but very troublesome, frustrating because unreliable old drives and disks. I made special TOS mode, what supports mounting ST floppy image files from mass storage like UltraSatan, then booting with m...

... I see. Basically using a hardware bug/feature to get something working. :-) Not exactly. Cartridge port is designed to be read only. Any write command to it's address area will cause bus error. But devices like this must write some parameters out. I designed some 30 years ago EPROM programmer f...

'Write by reading' is necessary in case of Atari cartridge port. Which normally allows not write. So, some tricks are used to make possible write. For instance reading some area will write part of address as data.

New release at usual place: http://atari.8bitchip.info/SCRSH/virgs.html

I looked it better. DL-ed STX image from Atarimania - and it is different/later version of game, what just runs faster.
Flicker fix. is not activated on ST(E), right.
But will add it to new release, as later version flickers too on faster CPU clock.

Honestly, I don't see that many people will be interested in recreating some rare computer. What has small SW base too, I guess.
As may see, even recreating ST is pretty much problematic.

Updates which allow 1GB partitions and lower RAM usage are in biggest part in TOS, and only smaller part in hard disk driver. Actually, it works fine with my very old DOS partition compatible driver, what needs program BigDOS, just now without it, what means faster work, less RAM usage and better co...

I have original disk of Virus, and adaptation is based on it. Copy protection was really simple, and I played it pretty much at time (around 1988) . What causes slower rotation of ship at start is added flicker remover, and that's noticeable especially on TT. The goal is to have normal screen genera...

Cat is cat, so wants milk. I guess you need to put on table something scarier than those zombie magazines
Maybe puppie

This is just a matter of how you look on things. Simple case: is STE a ST ? The right answer can be: is, and not. Little better is looking it from compatibility side, and than you may see that STE is very-very compatible. But not 100% . And if you look that even more deep, will see that incompatibil...