Hi
I am trying to squeeze some read speed out from CF using systemACE and xilinx standard libraries, but the performance is really really bad
read using xilfats 400KB/s read using systemace low level (direct sector reads) 1MB/s
I have found NO information in any Xilinx documentation what speeds can be excpected to be achived with systemACE
the 400KB/s looks like really miserable :(
i am using the CF card supplied by Xilinx, that is have not yet done testbenching with other better CF cards, but i would like to know if such testing has been done, and if there is hope of BIG speed improvment when using some high-speed CF cards.
if i look at the spec of the CF card supplied by Xilinx it has 2ms controller overhead (command to data ready delay) this would limit access to maximum 500 sector reads commands sent to the CF, but we need to add time for data transfer too, but this could explain the 1MB/ s measured speed
Antti