Datasheet

55
Table 2.8 Addressing Modes and Effective Addresses (cont)
Addressing
Mode
Instruction
Format Effective Addresses Calculation Equation
PC relative
addressing
disp:8 The effective address is the PC value sign-extended
with an 8-bit displacement (disp), doubled, and
added to the PC value.
PC
2
+
×
disp
(sign-extended)
PC + disp × 2
PC + disp × 2
disp:12 The effective address is the PC value sign-extended
with a 12-bit displacement (disp), doubled, and
added to the PC value.
PC
2
+
×
disp
(sign-extended)
PC + disp × 2
PC + disp × 2
Rn The effective address is the register PC value
plus Rn.
PC
Rn
PC + Rn
+
PC + Rn
Immediate
addressing
#imm:8 The 8-bit immediate data (imm) for the TST, AND,
OR, and XOR instructions are zero-extended.
—
#imm:8 The 8-bit immediate data (imm) for the MOV, ADD,
and CMP/EQ instructions are sign-extended.
—
#imm:8 The 8-bit immediate data (imm) for the TRAPA
instruction is zero-extended and is quadrupled.
—