Zilog EZ80F916 - Manual (Page 245)

UM014423-0607
ZiLOG Developer Studio II
eZ80Acclaim! ® User Manual
225
Representing Immediate Value
The following are examples of instructions of the
ld r, n
type:
1. ld a, 1*2
2. ld a, #1*2
3. ld a, #(1*2)
The eZ80Acclaim! assembler accepts an optional prefix character
#
for the immediate
addressing mode as given in (1) and (2).
For the third case, the prefix character
#
is mandatory because it conflicts with the indirect
addressing mode. For example:
ld a, (1*2) ;3A0200
Assembled as
ld a, (Mmn)
ld a, #(1*2) ;3E02
Assembled as
ld a, n
SOURCE LANGUAGE SYNTAX
The syntax description that follows is given to outline the general assembler syntax. It
does not define assembly language instructions.
F Only used as part of the AF or AF’ register pair. The F
register contains the six status bits used by the
eZ80Acclaim!.
Register Pair Addressing Mode AF Only used with PUSH and POP instructions
AF’ Only used in
EX AF,AF’
instruction
8-Bit Control Registers I
IXH
IXL
IYH
IYL
MBASE Only used in
LD A,MB
instruction where MB stands for
MBASE
R
SP The ADL mode indicates whether SPS or SPL is
actually used.
<source_line> => <if_statement>
Table 11. eZ80Acclaim! Addressing Modes (Continued)
Addressing Modes Symbolic Name Notes