[comp.sys.ibm.pc] Ram storage question

ericcox@cory.Berkeley.EDU (Eric Cox) (08/12/87)

I have a question about storing real time data in the IBM ram.

What I want to do is interface an A/D converter whose conversions
are initiated by an external clock.  The "conversion done" line will
be used to request a DMA byte transfer from the converter to IBM ram.  

My question is: Will refresh come in every so often and screw up the
		timing of my incoming data?  This data is real-time
		so I must keep these samples regularly spaced in time.
		(Assume my sample rate is slow enough to allow DMA time
		to finish)  How can I avoid this problem if it exists?

Eric Cox