Cirrus Logic EP93 Series User Manual page 116

MaverickCrunch Co-Processor
EP93xx User's Guide
31:28
3
cond
Description:
Mnemonic:
Bit Definitions:
31:28
cond
Description:
Mnemonic:
Bit Definitions:
3-46
32-bit Integer Multiply-Subtract, Result to Accumulator
27:24 23:22 21:20
1 1 1 0 0 0
Multiplies two 32-bit integers, subtracts the product from a third 32-bit integer,
and stores the result in an accumulator:
CRa = CRd - (CRn
CFMSUB32<cond> CRa, CRd, CRn, CRm
CRa:
CRd:
CRn:
CRm:
32-bit Integer Multiply-Add to Accumulator
27:24 23:22 21:20
1 1 1 0 0 0
Multiplies two 32-bit integers, adds the product to an accumulator, and stores
the result in an accumulator:
CRa = CRd + (CRn
CFMADDA32<cond> CRa, CRd, CRn, CRm
CRa:
CRd:
CRn:
CRm:
19:16 15:12
0 1 CRn CRd
×
CRm)
Destination accumulator
Minuend register
Multiplicand register
Multiplicand register
19:16 15:12
1 0 CRn CRd
×
CRm)
Destination accumulator
Addend accumulator
Multiplicand register
Multiplicand register
Copyright 2007 Cirrus Logic
11:8 7:5 4
0 1 1 0 CRa 0
11:8 7:5 4
0 1 1 0 CRa 0
DS785UM1
3:0
CRm
3:0
CRm