#ASPI & 16MB limit
2 messages in this thread
Given the ISA bus-master / DMA limit of 16MBs, does CorelSCSI guarantee that
all data buffers are below 16MBs? If not, what is the remedy to data
corruption on systems with more than 16MBs of memory?
My scenario is an AHA1542, ASPI4DOS.SYS, & CorelSCSI 1.20, on a system with 32
MBs of memory. If I use 386Max, I get errors immediately due to the fact that
they allocate high memory before low memory. Qualitas' solution was to cut off
memory management at 16MBs. For all other memory managers, they allocate from
low memory to high. This won't cause any problems for a while, but eventually
problems may arise.
So, does Corel take any precautions against this?
rp93
Procom Technology, Inc.
Roger,
The deficiency is not in the CorelSCSI device drivers, but in the inability of
the controller to operate properly in such an environment. I would suggest
using a controller better suited for this environment. The Corel device
drivers allow the operating system access to the device. The operating system
manages the memory.
I hope this clears up a few (good) questions.
Laszlo