First post, by dunarea
Recently installed a MFM NEC D3142 drive (40MB) on a Turbo-XT.
The board is common one with 640KB RAM and worked and still works fine with a XTIDE-CF.
The graphics is an OAK combo VGA/EGA. Currently setup for VGA output.
Everything went well, like LLF and installing some DOS. Actually runs MS-DOS 5.01.
It boots ok, can create directories, copy and delete files of any size anywhere, but...
It doesn't run almost any app which uses graphics be it VGA, EGA or ANSI graphics.
Coudn't run edit, Prince of Persia, checkit... Nothing.
The only one so far which worked is xtidecfg.
The system just freezes and nothing can be done. The caps lock and num lock still work after that. But all it shows is a blinking cursor.
Tried in another XT machine with the HDD+controller pair and it does the same. Just freezes. Tried with another MFM controller and the result was the same.
Changed the graphics card for an EGA and still the same.
With the same MFM+floppy combo controller, I can run anything from the floppy drive but not from the MFM HDD. From the HDD only text mode apps.
Never had in the past such an issue.