SPRUJ53B April 2024 – September 2024 TMS320F28P550SJ , TMS320F28P559SJ-Q1
32-Bit Integer Add
MRa | CLA floating-point destination register (MR0 to MR3) |
MRb | CLA floating-point destination register (MR0 to MR3) |
MRc | CLA floating-point destination register (MR0 to MR3) |
LSW: 0000 0000 000cc bbaa
MSW: 0111 1110 1100 0000
32-bit integer addition of MRb and MRc.
MRa(31:0) = MRb(31:0) + MRc(31:0);
This instruction modifies the following flags in the MSTF register:
Flag | TF | ZF | NF | LUF | LVF |
---|---|---|---|---|---|
Modified | No | Yes | Yes | No | No |
The MSTF register flags are modified based on the integer results of the operation.
NF = MRa(31);
ZF = 0;
if(MRa(31:0) == 0) { ZF = 1; };
This is a single-cycle instruction.
; Given A = (int32)1
; B = (int32)2
; C = (int32)-7
;
; Calculate Y2 = A + B + C
;
_Cla1Task1:
MMOV32 MR0, @_A ; MR0 = 1 (0x00000001)
MMOV32 MR1, @_B ; MR1 = 2 (0x00000002)
MMOV32 MR2, @_C ; MR2 = -7 (0xFFFFFFF9)
MADD32 MR3, MR0, MR1 ; A + B
MADD32 MR3, MR2, MR3 ; A + B + C = -4 (0xFFFFFFFC)
MMOV32 @_y2, MR3 ; Store y2
MSTOP ; end of task