Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Uživatelský manuál stáhnout pdf (Strana 148)

7 DETAILS OF INSTRUCTIONS

140

EPSON

S1C33 FAMILY C33 PE CORE MANUAL

psrclr imm5

Function

Clear PSR bit

Standard) psr

← psr & !imm5

Extension 1) Unusable

Extension 2) Unusable

Code

15 12 11 8 7 5 4 0

1 0 1 1 1 1 1 1 1 0 0

imm5

0xBF8_

Flag

IE C V Z N

↔ ↔ ↔ ↔ ↔

Mode

Immediate

CLK

Three cycles

Description

Clear the bit in the PSR specified by the immediate imm5 to 0. The value of imm5 indicates a

bit number, with values 0, 1, 2, 3, and 4 representing bits 0 (N), 1 (Z), 2 (V), 3 (C), and 4 (IE),

respectively. An

imm5 of more than 4 is not effective and does not alter the contents of PSR.

Example

psrclr 2 ; V ← 0 (V flag cleared)

1 2 ... 143 144 145 146 147 148 149 150 151 152 153 ... 180 181

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Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Uživatelský manuál Strana 148