W65C816S Datasheet, PDF (27/62 Pages) List of Unclassifed Manufacturers – Microprocessor

The Western Design Center, Inc.
Table 4-1 Addressing Mode Summary
W65C816S Data Sheet
Address Mode
Absolute
Absolute Indexed Indirect (Jump)
Absolute Indirect (Jump)
Absolute Long
Absolute Long, X
Absolute, X
Absolute, Y
Accumulator
Block Move (xyc)
Direct
Direct Indexed Indirect (d,x)
Direct Indirect
Direct Indirect Indexed (d),y
Direct Indirect Indexed Long [d],y
Direct Indirect Long
Direct, X
Direct, Y
Immediate
Implied
Relative
Relative Long
Stack
Stack Relative
Stack Relative Indirect Indexed
Instruction Times in Memory Cycle
Original 8-bit
NMOS
6502
4 (5)
-
5
-
-
4 (1,5)
4 (1)
2
-
3 (5)
6
-
5 (1)
-
-
4 (5)
4
2
2
2 (1,2)
-
3-7
-
-
New W65C816S
4 (3,5)
6
5
5 (3)
5 (3)
4 (1,3,5)
4 (1,3)
2
7
3 (3,4,5)
6 (3,4)
5 (3,4)
5 (1,3,4)
6 (3,4)
6 (3,4)
4 (3,4,5)
4 (3,4)
2 (3)
2
2 (2)
3 (2)
3-8
4 (3)
7 (3)
Memory Utilization in Number of
Program Sequence Bytes
Original 8-bit
NMOS
6502
New
W65C816S
3
3
-
3
3
3
-
4
-
4
3
3
3
3
1
1
-
3
2
2
2
2
-
2
2
2
-
2
-
2
2
2
2
2
2
2 (3)
1
1
2
2
-
3
1-3
1-4
-
2
-
2
Notes (these are indicated in parentheses):
1.
Page boundary, add 1 cycle if page boundary is crossed when forming address.
2.
Branch taken, add 1 cycle if branch is taken.
3.
M = 0 or X = 0, 16 bit operation, add 1 cycle, add 1 byte for immediate.
4.
Direct register low (DL) not equal zero, add 1 cycle.
5.
Read-Modify-Write, add 2 cycles for M = 1, add 3 cycles for M = 0.
The Western Design Center
W65C816S
27