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Notes on Data Addressing Modes
Rn
-
Working register R0-R7
direct
-
128 internal RAM locations, any l/O port, control or status register
@Ri
-
Indirect internal or external RAM location addressed by register R0 or R1
#data
-
8-bit constant included in instruction
#data 16
-
16-bit constant included as bytes 2 and 3 of instruction
bit
-
128 software flags, any bitaddressable l/O pin, control or status bit
A
-
Accumulator
Notes on Program Addressing Modes
addr16
-
Destination address for LCALL and LJMP may be anywhere within the 64-Kbyte
program memory address space.
addr11
-
Destination address for ACALL and AJMP will be within the same 2-Kbyte page of
program memory as the first byte of the following instruction.
rel
-
SJMP and all conditional jumps include an 8 bit offset byte. Range is + 127/– 128
bytes relative to the first byte of the following instruction.
All mnemonics copyrighted:
Semiconductor Group
©
Intel Corporation 1980
*
135
Instruction Set
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