Memory Data Formats; Figure 2.7 General Register Data Formats - Hitachi H8/3062 Hardware Manual

Single-chip microcomputer h8/3062 series; h8/3062b series; h8/3062f-ztat series; h8/3064f-ztat series

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Table of Contents

Longword data

General register

General register E

General register R

Most significant bit

Least significant bit

Memory Data Formats

Figure 2.8 shows the data formats on memory. The H8/300H CPU can access word data and

longword data on memory, but word or longword data must begin at an even address. If an attempt

is made to access word or longword data at an odd address, no address error occurs but the least

significant bit of the address is regarded as 0, so the access starts at the preceding address. This

also applies to instruction fetches.