Immediate-#Xx:8, #Xx:16, Or #Xx:32; Program-Counter Relative-@(D:8, Pc) Or @(D:16, Pc); Table 2.12 Absolute Address Access Ranges - Renesas H8S Series Hardware Manual

16-bit single-chip microcomputer

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Table of Contents

Section 2 CPU

Absolute Address

Data address

Program instruction

Immediate—#xx:8, #xx:16, or #xx:32

The 8-bit (#xx:8), 16-bit (#xx:16), or 32-bit (#xx:32) immediate data contained in an instruction

code can be used directly as an operand.

The ADDS, SUBS, INC, and DEC instructions implicitly contain immediate data in their

instruction codes. Some bit manipulation instructions contain 3-bit immediate data in the

instruction code, specifying a bit number. The TRAPA instruction contains 2-bit immediate data

in its instruction code, specifying a vector address.

Program-Counter Relative—@(d:8, PC) or @(d:16, PC)

This mode can be used by the Bcc and BSR instructions. An 8-bit or 16-bit displacement

contained in the instruction code is sign-extended to 24-bit and added to the 24-bit address

indicated by the PC value to generate a 24-bit branch address. Only the lower 24-bit of this branch

address are valid; the upper eight bits are all assumed to be 0 (H'00). The PC value to which the

displacement is added is the address of the first byte of the next instruction, so the possible

branching range is –126 to +128-byte (–63 to +64 words) or –32766 to +32768-byte (–16383 to

+16384 words) from the branch instruction. The resulting value should be an even number.

Rev. 3.00 Jul. 14, 2005 Page 50 of 986

REJ09B0098-0300

8 bits (@aa:8)

16 bits (@aa:16)

32 bits (@aa:32)

24 bits (@aa:24)

H'FF00 to H'FFFF

H'0000 to H'FFFF

Advanced Mode

H'FFFF00 to H'FFFFFF

H'000000 to H'007FFF,

H'FF8000 to H'FFFFFF

H'000000 to H'FFFFFF

H8s/2100 series H8s/2114r R4f2114r