Difference between MCS file size and flash size.

[love119]

Dear All,

I'm trying to understand about relationship between mcs file size and flash size.

Currently  I find that there are difference between mcs file size and flash size. the mcs file from vivado is more larger then flash size. as I remember that flash size is 32MBytes but mcs is 52MBytes. then I'd like to want to know that can I use this mcs file into the FPGA flash ? or should I have to add more flash?  or is there any options what such as compression of mcs?

What am I supposed to do ?

[kkn]

you need to select the flash size based on the bitstream size of the fpga, not looking at the mcs file size.

mcs file has some additional data which will be used by the programmer tool and will not be programmed into the flash

Following AR will help 

https://www.xilinx.com/support/answers/43961.html

[bpatil · Accepted solution]

Hi love119,

For which FPGA you are trying making mcs file?

Flash size varies according to FPGA.

For more details check https://www.xilinx.com/support/documentation/sw_manuals/xilinx2017_1/ug908-vivado-programming-debugging.pdf

(page 317-346) 

Regards,

Bhushan

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[century_21st]

the mcs files include serveral other infemation  except bits content , for example  type,address, crc and so on. you can consult the mcs files specification.