Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Custom Component Help

Hi all, I'm sorry if this question if too broad, but I'm a beginner to custom components and I need some help. My final goal is to have a custom component in SOPC builder, that performs the ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Hello again! So everything was working perfectly, but I ended up needing to change over to 32x1 byte read/writes instead of 8x4 byte read/writes. I changed my C code to reflect this in IOWR/IORD calls, but the results are not promising. SOPC builder gives this warning:

"Warning: cpu_0.data_master/SHA_Unit_0.s0: SHA_Unit_0.s0 does not have byteenables. Narrow (less than 32-bit) writes from cpu_0.data_master will result in spurious writes to SHA_Unit_0.s0".

I have changed my read and write signals to be only 8-bits instead of 32-bits. Since those signals are only one byte, I don't understand how to use a byteenable to make the results more accurate.

Any thoughts?