SPRUJ53B April 2024 – September 2024 TMS320F28P550SJ , TMS320F28P559SJ-Q1
Move 32-Bit Value from Memory with Data Copy
MRa | CLA floating-point register (MR0 to MR3) |
mem32 | 32-bit memory location accessed using one of the available addressing modes |
LSW: mmmm mmmm mmmm mmmm
MSW: 0111 0100 00aa addr
Move the 32-bit value referenced by mem32 to the floating-point register indicated by MRa.
MRa = [mem32];
[mem32+2] = [mem32];
This instruction modifies the following flags in the MSTF register:
Flag | TF | ZF | NF | LUF | LVF |
---|---|---|---|---|---|
Modified | No | Yes | Yes | No | No |
NF = MRa(31);
ZF = 0;
if(MRa(30:23) == 0){ ZF = 1; NF = 0; }
This is a single-cycle instruction.
; sum = X0*B0 + X1*B1 + X2*B2 + Y1*A1 + Y2*B2
;
; X2 = X1
; X1 = X0
; Y2 = Y1
; Y1 = sum
;
_Cla1Task2:
MMOV32 MR0, @_B2 ; MR0 = B2
MMOV32 MR1, @_X2 ; MR1 = X2
MMPYF32 MR2, MR1, MR0 ; MR2 = X2*B2
|| MMOV32 MR0, @_B1 ; MR0 = B1
MMOVD32 MR1, @_X1 ; MR1 = X1, X2 = X1
MMPYF32 MR3, MR1, MR0 ; MR3 = X1*B1
|| MMOV32 MR0, @_B0 ; MR0 = B0
MMOVD32 MR1, @_X0 ; MR1 = X0, X1 = X0
; MR3 = X1*B1 + X2*B2, MR2 = X0*B0
; MR0 = A2
MMACF32 MR3, MR2, MR2, MR1, MR0
|| MMOV32 MR0, @_A2
MMOV32 MR1, @_Y2 ; MR1 = Y2
; MR3 = X0*B0 + X1*B1 + X2*B2, MR2 = Y2*A2
; MR0 = A1
MMACF32 MR3, MR2, MR2, MR1, MR0
|| MMOV32 MR0, @_A1
MMOVD32 MR1,@_Y1 ; MR1 = Y1, Y2 = Y1
MADDF32 MR3, MR3, MR2 ; MR3 = Y2*A2 + X0*B0 + X1*B1 + X2*B2
|| MMPYF32 MR2, MR1, MR0 ; MR2 = Y1*A1
MADDF32 MR3, MR3, MR2 ; MR3 = Y1*A1 + Y2*A2 + X0*B0 + X1*B1 + X2*B2
MMOV32 @_Y1, MR3 ; Y1 = MR3
MSTOP ; end of task