PIC18LF8410-I/PTQTP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18LF8410-I/PTQTP

64/80-Pin Flash Microcontrollers with nanoWatt Technology

Microchip Technology 

PIC18F6310/6410/8310/8410

MOVSS

Move Indexed to Indexed

Syntax:

Operands:

Operation:

Status Affected:

MOVSS [zs], [zd]

0 ≤ zs ≤ 127

0 ≤ zd ≤ 127

((FSR2) + zs) → ((FSR2) + zd)

None

Encoding:

1st word (source)

2nd word (dest.)

Description

1110

1111

1011

xxxx

1zzz zzzzs

xzzz zzzzd

The contents of the source register are

moved to the destination register. The

addresses of the source and destination

registers are determined by adding the

7-bit literal offsets ‘zs’ or ‘zd’,

respectively, to the value of FSR2. Both

registers can be located anywhere in

the 4096-byte data memory space

(000h to FFFh).

The MOVSS instruction cannot use the

PCL, TOSU, TOSH or TOSL as the

destination register.

If the resultant source address points to

an indirect addressing register, the

value returned will be 00h. If the

resultant destination address points to

an indirect addressing register, the

instruction will execute as a NOP.

Words:

2

Cycles:

2

Q Cycle Activity:

Q1

Q2

Q3

Q4

Decode

Decode

Determine

source addr

Determine

dest addr

Determine

source addr

Determine

dest addr

Read

source reg

Write

to dest reg

Example:

MOVSS [05h], [06h]

Before Instruction

FSR2

Contents

of 85h

Contents

of 86h

= 80h

= 33h

= 11h

After Instruction

FSR2

Contents

of 85h

Contents

of 86h

= 80h

= 33h

= 33h

PUSHL

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Words:

Cycles:

Q Cycle Activity:

Q1

Decode

Store Literal at FSR2,

Decrement FSR2

PUSHL k

0 ≤ k ≤ 255

k → (FSR2),

FSR2 - 1→ FSR2

None

1111 1010 kkkk kkkk

The 8-bit literal ‘k’ is written to the data

memory address specified by FSR2.

FSR2 is decremented by ‘1’ after the

operation.

This instruction allows users to push

values onto a software stack.

1

1

Q2

Read ‘k’

Q3

Process

data

Q4

Write to

destination

Example:

PUSHL

Before Instruction

FSR2H:FSR2L

Memory (01ECh)

08h

=

=

01ECh

00h

After Instruction

FSR2H:FSR2L

Memory (01ECh)

= 01EBh

= 08h

DS39635A-page 332

Preliminary

 2004 Microchip Technology Inc.

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