ajr@inesc.UUCP (Julio Raposo) (01/23/90)
I've seen an intresting algorithm to test the presence of memory
(RAM). I think it supresses the problems associated with reading the
same value in sequence and other bus problems.
Here goes:
- Store 2 in that memory location
- decrement that value (8086 -> DEC Word Ptr[xxxx])
- see if it is 0 (test the zero flag)
- if it is 0 then the adress has no RAM
- decrement again
- see if it is 0
- if it is 0 then the adress has valid RAM
- else th adress has no RAM.
It seem to have no problems, except the time it takes.
Any comments?