SPRUIW9C October 2021 – March 2024 TMS320F280033 , TMS320F280034 , TMS320F280034-Q1 , TMS320F280036-Q1 , TMS320F280036C-Q1 , TMS320F280037 , TMS320F280037-Q1 , TMS320F280037C , TMS320F280037C-Q1 , TMS320F280038-Q1 , TMS320F280038C-Q1 , TMS320F280039 , TMS320F280039-Q1 , TMS320F280039C , TMS320F280039C-Q1
Move 32-Bit Floating-Point Register Contents to Memory
MRa | floating-point register (MR0 to MR3) |
mem32 | 32-bit destination memory accessed using one of the available addressing modes |
LSW: mmmm mmmm mmmm mmmm
MSW: 0111 0100 11aa addr
Move from MRa to 32-bit memory location indicated by mem32.
[mem32] = MRa;
This instruction modifies the following flags in the MSTF register:
Flag | TF | ZF | NF | LUF | LVF |
---|---|---|---|---|---|
Modified | No | No | No | No | No |
No flags affected.
This is a single-cycle instruction.
; Perform 5 multiply and accumulate operations:
;
; X and Y are 32-bit floating-point arrays;
; 1st multiply: A = X0 * Y0
; 2nd multiply: B = X1 * Y1
; 3rd multiply: C = X2 * Y2
; 4th multiply: D = X3 * Y3
; 5th multiply: E = X3 * Y3;
; Result = A + B + C + D + E
;
_Cla1Task1:
MMOVI16 MAR0, #_X ; MAR0 points to X array
MMOVI16 MAR1, #_Y ; MAR1 points to Y array
MNOP ; Delay for MAR0, MAR1 load
MNOP ; Delay for MAR0, MAR1 load
; <-- MAR0 valid
MMOV32 MR0, *MAR0[2]++ ; MR0 = X0, MAR0 += 2
; <-- MAR1 valid
MMOV32 MR1, *MAR1[2]++ ; MR1 = Y0, MAR1 += 2
MMPYF32 MR2, MR0, MR1 ; MR2 = A = X0 * Y0
|| MMOV32 MR0, *MAR0[2]++ ; In parallel MR0 = X1, MAR0 += 2
MMOV32 MR1, *MAR1[2]++ ; MR1 = Y1, MAR1 += 2
MMPYF32 MR3, MR0, MR1 ; MR3 = B = X1 * Y1
|| MMOV32 MR0, *MAR0[2]++ ; In parallel MR0 = X2, MAR0 += 2
MMOV32 MR1, *MAR1[2]++ ; MR1 = Y2, MAR2 += 2
MMACF32 MR3, MR2, MR2, MR0, MR1 ; MR3 = A + B, MR2 = C = X2 * Y2
|| MMOV32 MR0, *MAR0[2]++ ; In parallel MR0 = X3
MMOV32 MR1, *MAR1[2]++ ; MR1 = Y3
MMACF32 MR3, MR2, MR2, MR0, MR1 ; MR3 = (A + B) + C, MR2 = D = X3 * Y3
|| MMOV32 MR0, *MAR0 ; In parallel MR0 = X4
MMOV32 MR1, *MAR1 ; MR1 = Y4
MMPYF32 MR2, MR0, MR1 ; MR2 = E = X4 * Y4
|| MADDF32 MR3, MR3, MR2 ; in parallel MR3 = (A + B + C) + D
MADDF32 MR3, MR3, MR2 ; MR3 = (A + B + C + D) + E
MMOV32 @_Result, MR3 ; Store the result MSTOP ; end of task