[comp.sys.apollo] Maximum size in PBU2_$ALLOCATE_MAP?

krowitz@RICHTER.MIT.EDU (David Krowitz) (05/19/88)

Can someone tell me what limits the maximum size you can ask for
with the PBU2_$ALLOCATE_MAP call? I seem to be able to get no more
than about 60,000 bytes (on a DN460/660) even though the size
parameter is a 4 byte integer. Is it limited by the Multibus
implementation on the DN460/660 series (which if I remember correctly
has a 16-bit PNA, whereas the DSP80/90 has an 18-bit PNA)?


 -- David Krowitz

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