ST10F273E datasheet(50/179 Pages) STMICROELECTRONICS

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Central processing unit (CPU)

ST10F273E

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7.3

MAC coprocessor specific instructions

The

Table 28 lists the MAC instructions of the ST10F273E. The detailed description of each

instruction can be found in the “ST10 Family Programming Manual”. Note that all MAC

instructions are encoded on 4 bytes.

Table 28.

MAC instruction set summary

Mnemonic

Description

CoABS

Absolute value of the accumulator

CoADD(2)

Addition

CoASHR(rnd)

Accumulator arithmetic shift right & optional round

CoCMP

Compare accumulator with operands

CoLOAD(-,2)

Load accumulator with operands

CoMAC(R,u,s,-,rnd)

(Un)signed/(Un)Signed Multiply-Accumulate & Optional Round

CoMACM(R)(u,s,-,rnd)

(Un)Signed/(Un)signed multiply-accumulate with parallel data move

& optional round

CoMAX / CoMIN

maximum / minimum of operands and accumulator

CoMOV

Memory to memory move

CoMUL(u,s,-,rnd)

(Un)signed/(Un)signed multiply & optional round

CoNEG(rnd)

Negate accumulator & optional round

CoNOP

No-operation

CoRND

Round accumulator

CoSHL / CoSHR

Accumulator logical shift left / right

CoSTORE

Store a MAC unit register

CoSUB(2,R)

Substraction

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