way back when i wrote a video test pattern generator program. after installing DOSBOX, i began tinkering with MS Basic Compiler again, and decided to re-release it as freeware. there was some interest in it on an electronics forum i frequent, so i edited the program and re-released it as freeware.

since i don't have the original hardware (486 machine with a multifunction video card), i tested it in DOSBOX using the various "machine=" settings.

there is one question i have about dosbox's hardware emulation. my test pattern software does a peek at a couple of memory locations and an interrupt call to DOS interrupt &H10 to determine what type of card is installed. this is a read of the video hardware bits in CMOS. with mono, EGA, and VGA, the software read the proper configuration and came up in the correct menu, but in CGA mode (machine=cga), the software comes up in the EGA menu.