kfl@hoxna.UUCP (Kenton Lee) (12/17/84)
xxx This is from the Zenith BBS. It should help in the recent discussion here about Zenith Z150 compatibility. --------------------------------------------- Question: I realize that it is not possible for you to test all possible IBM PC software packages for compatibility with the Z-150. Can you tell me how I might identify software packages that might not work on the Z- 150 compatible computer? Answer: It would be very unusual for a software package not to work on the Z-150 unless the package deliberately attempts to detect that it is running on a compatible computer. A few software packages use the cassette port or the BASIC in ROM of the IBM PC. We of course cannot violate the copyright and duplicate the IBM ROM. It is very rare for a program to directly use the IBM ROM in this fashion. Some programs try to use the color signals from the composite video port instead of the usual RGB port. Since the quality of this color composite video is very poor anyway the Z-150 converts the color composite signal to a monochrome grey scale which works much better on the monchrome monitors. The Z-150 of course supports color on the RGB port exactly the same way that the IBM PC does. -----