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AR# 33542

11.1 EDK, MPMC v5.00.a - 32-bit wide VFBC write FIFO corrupts data and asserts incorrect VFBC_Wd_Full


When I use the MPMC VFBC write FIFO in 32-bit width mode, data is written to memory incorrectly and the VFBC<Port_Num>_Wd_Full signal is asserted at incorrect occupancy levels. Data seems to be repeated to memory, and an invalid NPI_Size of 0x5 is used. How do I resolve this issue?


The only current work-around is to only use the VFBC in 64-bit width mode.

This issue is planned to be fixed in MPMC v5.04.a and later, starting in EDK 11.4.

AR# 33542
Date Created 09/21/2009
Last Updated 12/15/2012
Status Active
Type General Article