SC9RS08KA2 datasheet(66/134 Pages) FREESCALE

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Chapter 8 Central Processor Unit (RS08CPUV1)

SC9RS08KA2 Series Data Sheet, Rev. 1

Freescale Semiconductor

Low-order eight bits of a direct address $0000–$00FF (high byte assumed to

be $00)

One byte of immediate data

High-order 6-bit of 14-bit extended address prefixed with 2-bit of 0

Low-order byte of 14-bit extended address

Relative offset

Source form

Everything in the source forms columns, except expressions in italic characters, is literal information

which must appear in the assembly source file exactly as shown. The initial 3- to 5-letter mnemonic is

always a literal expression. All commas, pound signs (#), parentheses, and plus signs (+) are literal

characters.

—

Any label or expression that evaluates to a single integer in the range 0–7.

—

Any label or expression that evaluates to a single hexadecimal integer in the

range $0–$F.

opr8i

—

Any label or expression that evaluates to an 8-bit immediate value.

opr4a

—

Any label or expression that evaluates to a Tiny address (4-bit value). The

instruction treats this 4-bit value as the low order four bits of an address in the

16-Kbyte address space ($0000–$000F). This 4-bit value is embedded in the

low order four bits in the opcode.

opr5a

—

Any label or expression that evaluates to a Short address (5-bit value). The

instruction treats this 5-bit value as the low order five bits of an address in the

16-Kbyte address space ($0000–$001F). This 5-bit value is embedded in the

low order 5 bits in the opcode.

opr8a

—

Any label or expression that evaluates to an 8-bit value. The instruction treats

this 8-bit value as the low order eight bits of an address in the 16-Kbyte

address space ($0000–$00FF).

opr16a

—

Any label or expression that evaluates to a 14-bit value. On the RS08 core, the

upper two bits are always 0s. The instruction treats this value as an address in

the 16-Kbyte address space.

rel

—

Any label or expression that refers to an address that is within –128 to

+127

locations from the next address after the last byte of object code for the current

instruction. The assembler will calculate the 8-bit signed offset and include it in

the object code for this instruction.

Address modes

INH

Inherent (no operands)

IMD

Immediate to Direct (in MOV instruction)

IMM

Immediate

Direct to Direct (in MOV instruction)

DIR

Direct

SRT

Short

TNY

Tiny

EXT

Extended

REL

8-bit relative offset

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