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NEC PD75402A User Manual

Page 34

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CHAPTER 3. FEATURES OF ARCHITECTURE AND MEMORY MAP

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Table 3-2 Addressing Mode List

Addressing Mode

1-bit direct

addressing

4-bit direct

addressing

8-bit direct

addressing

4-bit register

indirect

addressing

Bit manipulation

addressing

Stack

addressing

Notation

mem. bit

mem

@HL

fmem. bit

Specified Address

The bit indicated by bit of the address indicated by mem. However:

Memory bank 0 is accessed if mem = 00H to 3FH.

Memory bank 15 is accessed if mem = 80H to FFH.

The address indicated by mem. However:

Memory bank 0 is accessed if mem = 00H to 3FH.

Memory bank 15 is accessed if mem = 80H to FFH.

The address indicated by mem (mem: Even address). However:

Memory bank 0 is accessed if mem = 00H to 3EH.

Memory bank 15 is accessed if mem = 80H to FEH.

The address indicated by the content of HL of Memory bank 0. If HL = 00H to 3FH,

however.

The bit indicated by bit of the address indicated by fmem of Memory bank 15.

If the following, however:

fmem = FB0H to FBFH (interrupt, etc. hardware)

fmem = FF0H to FFFH (input/output port)

The address indicated by SP of Memory bank 0.

Limited to 20H to 3FH, however.

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