ISA Buffered cards
Most problems with
ISA buffered cards relate to Interrupt and IO port clashes. To help resolve these
check the following.
On PCI machines
make sure that the IRQ used by the ISA card is marked as reserved within the
BIOS Setup screens. Symptoms of IRQ clash's are some characters being sent
from the port and then stopping.
PCI cards will
use high IO port ranges so as a rule anything below 400 is safe from PCI
clash's but may be used by a ISA card. Symptoms of IO port clash's may be
some ports on a card working but not others or the card itself not
Note : When testing IMS Buffered cards you must use the CCDIAG.EXE utility
supplied on the floppy disk and not the TCLDIAG.EXE utility also supplied.
ISA Memory mapped/Intelligent
Make sure that the upper memory region you wish to use is Marked as not
shadowed or cached within the BIOS setup. Symptoms of the upper memory being
shadowed is the card not being found on boot up even though the card and
REAL/32 have the correct address's.