Performs a MULA operation with contents of registers Rs1 and
generated address (DISP32), adds content of Rs2 to the MULA
result, then loads the final result into AGU accumulator register.
The banks of the source registers Rs1 and Rs2 are selected by BS5.
Takes 5 cycles to execute.
Example: AGU_RXDR ZERO 5 0x50 0x51
DISP AGU P5
------------------
00000000 - 50
00000000 - 00
00000005 RXDR 51
00000000 - 00
00000000 - 00
NOT YET
AGU_RXDR ZERO 10 0x20 0x21
!! Perform MULA with content of
!! register 0x20 and address 10
!! Add content of 0x21 to MULA
!! result then load the final
!! result to AGU accumulator