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doubts:320c30

Started by Vijay Chandavarkar July 25, 2001
hello all,

I have gone through the TMS320C3X manual.
My doubts are:-
1. "In the TMS320C30 pipeline, Is the register read
is considered as
a seperate 'READ' cycle or whether register read
occurs at the
'EXECUTION' stage."
because if you refer the 320c3x user's manual
(p8-8 and 8-19),
it has been mentioned that 'ARs Read' under the read
cycle. so does
it mean that registers 'ARs' are read OR the memory
location pointed
by 'ARs' are read.

2. In the 3 operand instruction memory reads, if
'SRC1' is in
Internal memory and 'SRC2' is in external memory
then two memory
reads are completed in a single cycle. But,
if 'src1' is in external memory and 'src2' is in
internal memory then
it takes 2 cycles to complete two reads.
How is this, if we just interchange the src1 and src2,
possible?

please refer to 320c3x user's manual(p8-25,26).

Thanks in advance
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