Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Manual de usuario descargar pdf (Pagina 68)

7 DETAILS OF INSTRUCTIONS

EPSON

S1C33 FAMILY C33 PE CORE MANUAL

7 Details of Instructions

This section explains all the instructions in alphabetical order.

Symbols in the instruction reference

%rd, rd General-purpose registers (R0–R15) or their contents used as the destination

%rs, rs General-purpose registers (R0–R15) or their contents used as the source

%rb, rb General-purpose registers (R0–R15) or their contents that hold the base address to be accessed in

%sd, sd Special registers or their contents used as the destination

%ss, ss Special registers or their contents used as the source

%sp, sp Stack pointer (SP) or its content

The register field (rd

, rs, sd, or ss) in the code contains a register number.

General-purpose registers (rd

, rs) R0 = 0b0000, R1 = 0b0001 . . . R15 = 0b1111

Special registers (

sd, ss) PSR = 0b0000, SP = 0b0001, ALR = 0b0010, AHR = 0b0011,

TTBR = 0b1000, IDIR = 0b1010, DBBR = 0b1011, PC = 0b1111

immX Unsigned immediate X bits in length. The X contains a number representing the bit length of the

immediate.

signX Signed immediate X bits in length. The X contains a number representing the bit length of the

immediate. Furthermore, the most significant bit is handled as the sign bit.

IL[3:0] Interrupt level field

IE Interrupt enable flag

C Carry flag

V Overflow flag

Z Zero flag

N Negative flag

– Indicates that the bit is not changed by instruction execution

↔ Indicates that the bit is set (= 1) or reset (= 0) by instruction execution

0 Indicates that the bit is reset (= 0) by instruction execution

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Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Manual de usuario Pagina 68