Address Modifier Summary - Motorola DSP56000 Manual

LINEAR ADDRESS MODIFIER
M0 = 255 = 11111111 FOR LINEAR ADDRESSING WITH R0
ORIGINAL REGISTERS: N0 = 5,
POSTINCREMENT BY OFFSET N0:
POSTINCREMENT BY OFFSET N0:
POSTINCREMENT BY OFFSET N0:
MODULO ADDRESS MODIFIER
M0 = 19 = 0001 0011 FOR MODULO 20 ADDRESSING WITH R0
ORIGINAL REGISTERS: N0 = 5,
POSTINCREMENT BY OFFSET N0:
POSTINCREMENT BY OFFSET N0:
POSTINCREMENT BY OFFSET N0:
REVERSE-CARRY ADDRESS MODIFIER
M0 = 0= 0000 0000 FOR REVERSE-CARRY ADDRESSING WITH R0
ORIGINAL REGISTERS: N0 = 8,
POSTINCREMENT BY OFFSET N0:
POSTINCREMENT BY OFFSET N0:
POSTINCREMENT BY OFFSET N0:
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ADDRESSING
R0 = 75 = 0100 1011
R0 = 80 = 0101 0000
R0 = 85 = 0101 0101
R0 = 90 = 0101 1010
R0 = 75 = 0100 1011
R0 = 80 = 0101 0000
R0 = 65 = 0100 0001
R0 = 70 = 0100 0110
R0 = 64 = 0100 0000
R0 = 72 = 0100 1000
R0 = 68 = 0100 0100
R0 = 76 = 0100 1100
Figure 4-15 Address Modifier Summary
ADDRESS GENERATION UNIT
90
85
80
R0 75
UPPER
BOUNDARY
83
80
R0
75
70
65
64
LOWER
BOUNDARY
76
72
68
R0 64
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