bmh@tigger.cs.unc.edu (Brad Hemminger) (12/12/90)
We have a project that uses a high speed communications card that will talk directory to some memory on a VME card sitting on our Sun 4/370. It will cram data to/from the card at high speeds, and a software driver/application will retrieve the data from the card. Rather than using this 'extra memory card' which costs $$, I was wondering if there was a way to have partition a portion of the system memory so that the Sun OS doesn't use it, and thus make it available for this communications card's. Thus if we could just tell the Sun to not use the last 10 Mbytes of it's 32 Mbytes, and then have the driver be told the address of that 10 Mbytes instead of the addon card we could do the same thing without having to get the addon card? Can one do this? Ps. I tried setting memsize with eeprom(8) to a lower value, but it had no effect. Brad Hemminger bmh@cs.unc.edu