ST7FOXA0 datasheet(85/123 Pages) STMICROELECTRONICS

85 / 123 page

ST7FOXA0

Instruction set

85/123

JRPL

Jump if N = 0 (plus)

N = 0 ?

JREQ

Jump if Z = 1 (equal)

Z = 1 ?

JRNE

Jump if Z = 0 (not equal)

Z = 0 ?

JRC

Jump if C = 1

C = 1 ?

JRNC

Jump if C = 0

C = 0 ?

JRULT

Jump if C = 1

Unsigned <

JRUGE

Jump if C = 0

Jmp if unsigned >=

JRUGT

Jump if (C + Z = 0)

Unsigned >

JRULE

Jump if (C + Z = 1)

Unsigned <=

Load

dst <= src

reg, M

M, reg

MUL

Multiply

X,A = X * A

A, X, Y

X, Y, A

NEG

Negate (2's compl)

neg $10

reg, M

NOP

No Operation

OR operation

A = A + M

POP

Pop from the Stack

pop reg

reg

pop CC

PUSH

Push onto the Stack

push Y

reg, CC

RCF

Reset carry flag

C = 0

RET

Subroutine Return

RIM

Enable Interrupts

I = 0

RLC

Rotate left true C

C <= Dst <= C

reg, M

RRC

Rotate right true C

C => Dst => C

reg, M

RSP

Reset Stack Pointer

S = Max allowed

SBC

Subtract with Carry

A = A - M - C

SCF

Set carry flag

C = 1

SIM

Disable Interrupts

I = 1

SLA

Shift left Arithmetic

C <= Dst <= 0

reg, M

SLL

Shift left Logic

C <= Dst <= 0

reg, M

SRL

Shift right Logic

0 => Dst => C

reg, M

SRA

Shift right Arithmetic

Dst7 => Dst => C

reg, M

SUB

Subtraction

A = A - M

SWAP

SWAP nibbles

Dst[7..4]<=>Dst[3..0]

reg, M

TNZ

Test for Neg & Zero

tnz lbl1

TRAP

S/W trap

S/W interrupt

Table 36.

Illegal opcode detection (continued)

Mnemo

Description

Function/Example

Dst

Src

Obsolete

Product(s)

- Obsolete

Product(s)

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