STMicroelectronics ST10 Series Programming Manual page 148

ST10 FAMILY PROGRAMMING MANUAL
MAC Flags
N
*
N Set if the most significant bit of the result is set. Cleared otherwise.
Z Set if the result equals zero. Cleared otherwise.
C Set if a carry or borrow is generated. Cleared otherwise.
SV Set if an arithmetic overflow occurred. Not affected otherwise.
E Set if the MAE is used. Cleared otherwise.
SL Set if the contents of the ACC is automatically saturated. Not affected otherwise.
Addressing Modes
Mnemonic
CoMACMu [IDX
CoMACMu- [IDX
CoMACMu [IDX
CoMACMRu [IDX
CoMACMRu [IDX
Examples
CoMACMu [IDX1+QX0], [R10+QR1], rnd ; (ACC)<--(ACC)+ ((IDX1)) * ((R10))+ rnd
Repeat 3 times CoMACMu
CoMACMu [IDX0 - QX0], [R8+QR0]
Repeat MRW times CoMACMRu
CoMACMRu [IDX1+QX1], [R7 - QR0]
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Z C
* *
⊗], [Rw ⊗]
i m
⊗], [Rw ⊗]
i m
⊗], [Rw ⊗], rnd
i m
⊗], [Rw ⊗]
i m
⊗], [Rw ⊗], rnd
i m
SV
*
Rep Format
Yes 93 Xm 18 rrrr:rqqq
Yes 93 Xm 28 rrrr:rqqq
Yes 93 Xm 19 rrrr:rqqq
Yes 93 Xm 38 rrrr:rqqq
Yes 93 Xm 39 rrrr:rqqq
; (R10) <-- (R10) + (QR1)
; ( ((IDX1) - (QX0)) ) <-- ((IDX1))
; (IDX1) <-- (IDX1) + (QX0)
; (ACC) <-- (ACC) + ((IDX0))*((R8))
; (R8) <-- (R8) + (QR0)
; ( ((IDX0) + (QX0)) ) <-- ((IDX0))
; (IDX0) <-- (IDX0) - (QX0)
; (ACC) <-- ((IDX1))*((R7)) - (ACC)
; (R7) <-- (R7) - (QR0)
; ( ((IDX1) - (QX1)) ) <-- ((IDX1))
; (IDX1) <-- (IDX1) + (QX1)
E SL
* *
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