PM0044 datasheet(144/162 Pages) STMICROELECTRONICS

144 / 162 page

STM8 instruction set

PM0044

144/162

Doc ID 13590 Rev 3

Syntax

SLL dst

e.g. SLL (X)

SLA dst

e.g. SLA (X)

Operation

Description

The destination is either a memory byte or a register.It double the affected

value. This instruction is compact, and does not affect any register when

used with RAM variables.

Instruction overview

⇒

Set if bit 7 of the result is set (negative value), cleared otherwise.

⇒

R7.R6.R5.R4.R3.R2.R1.R0

Set if the result is zero (0x00), cleared otherwise.

⇒

Set if, before the shift, bit 7 of register or memory was set, cleared

otherwise.

Detailed description

SLL/SLA

Shift Left Logical/Shift

Left Arithmetic

SLL/SLA

mnem

dst

Affected condition flags

VI1

SLL/SLA

Mem

bit7

SLL/SLA

Reg

bit7

dst

Asm(1)

lgth

Op-code(s)

ST7

SLL A

✗

shortmem

SLL $15

✗

longmem

SLL $1505

(X)

SLL (X)

✗

(shortoff,X)

SLL ($15,X)

✗

(longoff,X)

SLL ($1505,X)

(Y)

SLL (Y)

✗

(shortoff,Y)

SLL ($15,Y)

✗

(longoff,Y)

SLL ($1505,Y)

(shortoff,SP)

SLL ($15,SP)

✗

[shortptr.w]

SLL [$15]

✗

[longptr.w]

SLL [$1505].w

([shortptr.w],X)

SLL ([$15],X)

✗

Cb7

PM0044 Datasheet(PDF) 144 Page - STMicroelectronics

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