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4-71
Assembly Language Instructions
Symbol Meaning
A~ Select offset accumulator as the source if this bit is 1. Used in opcode encoding only.
~A Select offset accumulator as the destination accumulator if this bit is 1. Used in opcode encod-
ing only.
A~ Select offset accumulator as the source if this bit is 0. Used in opcode encoding only.
~A~ Can be either ~A or A~ based on opcode (or instruction). Used in Opcode encoding only.
A
n
[~] Can be either A
n
or A
n
~ where
n
= 0...3
AP
n
Accumulator Pointer register where
n
= 0..3. Low-order 5 bits select one of 32 accumulators.
adrs Addressing mode bits
am
, R
x
,
pm.
See Table 4–46.
{
adrs
}
n
Addr
e
s
sing mode which must be provided. It should be of the format shown in Table 4–46. The curly
braces {} are not included in the actual instruction. The subscript
n
represents the data size (in bits)
the instruction will use. For example, {adrs}
8
means that the instruction will use 8 bit data from the
addressed memory and the upper bits may not be used. If
n
is not provided, data width is 16 bits.
cc
Condition code bits used with conditional branch/calls and test flag/bit instructions.
{
cc
} Conditional code mnemonic used with conditional branch/calls and test flag/bit instructions. Curly
braces indicates this field is not optional.
CF Carry flag
clk
Total clock cycles per instruction
dma
[
n
]
n
bit data memory address. For example,
dma8
means 8-bit location data memory address. If
n
is
not specified, defaults to
dma16
.
DP Data pointer register, 16 bits
flagadrs Flag addressing syntax as shown in Table 4–47.
flg
Test flag bit. Used in opcode encoding only.
{
flagadrs
} Flag addressing syntax as shown in Table 4–48.
FM Fractional mode
g/r
Global/relative flag bit for flag addressing.
IM Interrupt enable mode
imm
[
n
]
n
bit immediate value. If
n
is not specified, defaults to
imm16
.
k0...kn
Constant field bits.
MR Multiply register, 16 bits
next A Accumulator pointer premodification. See Table 4–45.
Not
Not condition on conditional jumps, conditional calls or test flag instructions.
N/R Not repeatable or not recommended