Instruction Notation Conventions - Samsung S3C9228 User Manual

SAM88RI INSTRUCTION SET
Notation
cc Condition code
r Working register only
rr Working register pair
R Register or working register
RR Register pair or working register pair
Ir Indirect working register only
IR Indirect register or indirect working register @Rn or @reg (reg = 0–255, n = 0–15)
Irr Indirect working register pair only
IRR Indirect register pair or indirect working
register pair
X Indexed addressing mode
XS Indexed (short offset) addressing mode
xl Indexed (long offset) addressing mode
da Direct addressing mode
ra Relative addressing mode
im Immediate addressing mode
6-6
Table 6-4. Instruction Notation Conventions
Description Actual Operand Range
See list of condition codes in Table 6-6.
Rn (n = 0–15)
RRp (p = 0, 2, 4, ..., 14)
reg or Rn (reg = 0–255, n = 0–15)
reg or RRp (reg = 0–254, even number only, where
p = 0, 2, ..., 14)
@Rn (n = 0–15)
@RRp (p = 0, 2, ..., 14)
@RRp or @reg (reg = 0–254, even only, where
p = 0, 2, ..., 14)
#reg[Rn] (reg = 0–255, n = 0–15)
#addr[RRp] (addr = range –128 to +127, where
p = 0, 2, ..., 14)
#addr [RRp] (addr = range 0–8191, where
p = 0, 2, ..., 14)
addr (addr = range 0–8191)
addr (addr = number in the range +127 to –128 that is
an offset relative to the address of the next instruction)
#data (data = 0–255)
S3C9228/P9228_UM_REV1.10