[comp.sys.ibm.pc] Help with Hercules clone

tim@cit-vax.Caltech.Edu (Timothy L. Kay) (10/16/87)

A long time ago, I wrote a program for a Hercules card.  I used the
information supplied in the Hercules manual to set the 6845 registers.
The program runs on the real Hercules card.

Now I have a clone card, and it exhibits some peculiar behaviour
with respect to the original program.  If I try to run the program
just after the machine has booted, the monitor doesn't sync to the
graphics signal produced by the clone machine.

However, if I run SuperCalc3 and exit immediately (SC3 followed by /qy),
then my program works properly.  What could the SC3 program be setting
that my program is not?

Tim