NEC PD750008 - Manual (Page 45)

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CHAPTER 3 FEATURES OF THE ARCHITECTURE AND MEMORY MAP
Table 3-1. Addressing Modes
Addressing mode
Representation
Specified address
format
1-bit direct mem.bit Bit specified by bit at the address specified by MB and mem.
addressing • When MBE = 0 and
mem = 00H-7FH, MB = 0
mem = 80H-FFH, MB = 15
• When MBE = 1, MB = MBS
4-bit direct mem Address specified by MB and mem.
addressing • When MBE = 0 and
mem = 00H-7FH, MB = 0
mem = 80H-FFH, MB = 15
• When MBE = 1, MB = MBS
8-bit direct Address specified by MB and mem (mem: even address).
addressing • When MBE = 0 and
mem = 00H-7FH, MB = 0
mem = 80H-FFH, MB = 15
• When MBE = 1, MB = MBS
4-bit register @HL Address specified by MB and HL.
indirect @HL+ In this case, MB = MBE·MBS
addressing @HL– HL+ automatically increments the L register after addressing.
HL– automatically decrements the L register after addressing.
@DE Address specified by DE in memory bank 0
@DL Address specified by DL in memory bank 0
8-bit register @HL Address specified by MB and HL. (Contents of the L register is
indirect an even address.)
addressing In this case, MB = MBE·MBS
Bit fmem.bit Bit specified by bit at the address specified by fmem.
manipulation In this case,
addressing fmem = FB0H-FBFH (interrupt-related hardware)
FF0H-FFFH (I/O ports)
pmem.@L Bit specified by the low-order two bits of the L register
at the address specified by the high-order 10 bits of pmem and the
high-order two bits of the L register.
In this case, pmem = FC0H-FFFH
@H+mem.bit Bit specified by bit at the address specified by MB, H, and the low-
order four bits of mem.
In this case, MB = MBE·MBS
Stack addressing — Address specified by the SP in memory bank selected by the SBS