Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Manuel d'utilisateur télécharger pdf (Page 120)

7 DETAILS OF INSTRUCTIONS

112

EPSON

S1C33 FAMILY C33 PE CORE MANUAL

ld.ub %rd, [%rb]+

Function

Unsigned byte data transfer

Standard) rd(7:0)

← B[rb], rd(31:8) ← 0, rb ← rb + 1

Extension 1) Unusable

Extension 2) Unusable

Code

15 12 11 8 7 4 3 0

0 0 1 0 0 1 0 1

r b r d

0x25__

Flag

IE C V Z N

– – – – –

Mode

Src: Register indirect with post-increment %rb = %r0 to %r15

Dst: Register direct

%rd = %r0 to %r15

CLK

Two cycles

Description

The byte data in the specified memory location is transferred to the rd register after being zero-

extended to 32 bits. The

rb register contains the memory address to be accessed. Following data

transfer, the address in the

rb register is incremented by 1.

1 2 ... 115 116 117 118 119 120 121 122 123 124 125 ... 180 181

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Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Manuel d'utilisateur Page 120