Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Instrukcja Użytkownika Pobierz pdf (Strona 172)

7 DETAILS OF INSTRUCTIONS

164

EPSON

S1C33 FAMILY C33 PE CORE MANUAL

sub %sp, imm10

Function

Subtraction

Standard) sp

← sp - imm10 × 4

Extension 1) Unusable

Extension 2) Unusable

Code

15 12 11 10 9 0

1 0 0 0 0 1

imm10

0x84__

Flag

IE C V Z N

– – – – –

Mode

Src: Immediate data (unsigned)

Dst: Register direct (SP)

CLK

One cycle

Description

(1) Standard

Quadruples the 10-bit immediate

imm10 and subtracts it from the stack pointer SP. The imm10

is zero-extended into 32 bits prior to the operation.

(2) Delayed instruction

This instruction may be executed as a delayed instruction by writing it directly after a branch

instruction with the “d” bit.

Example

sub %sp,0x100 ; sp = sp - 0x400

1 2 ... 167 168 169 170 171 172 173 174 175 176 177 ... 180 181

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Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Instrukcja Użytkownika Strona 172