OXYGENHUB
◆ main enhanced-x16-emulator / tests / spec_65c02.txt
1.8 KiB · Plain Text · last changed chore(): initial commit 25 days ago source blame history raw
1 
# Documented sizes and base cycle counts for the instructions the 65C02 adds
2 
# to the 6502, taken from the opcode list at
3 
# http://6502.org/tutorials/65c02opcodes.html
4 
#
5 
# Checked against src/cpu/tables.h by tests/check_opcode_spec.py.
6 
#
7 
# ProcessorTests measures what the hardware does. This records what the
8 
# documentation says, so a change to the tables that contradicts the published
9 
# spec has to be argued for rather than slipped in. The two have disagreed
10 
# once already, over the cycle count of $5C.
11 
#
12 
# The note is that page's footnote letter, marking counts that vary with
13 
# decimal mode, a taken branch or a page crossing. The number here is the base.
14 
#
15 
# opcode bytes cycles note
16 
00 1 7 -
17 
02 2 2 -
18 
03 1 1 -
19 
04 2 5 -
20 
07 2 5 -
21 
0B 1 1 -
22 
0C 3 6 -
23 
0F 3 5 a
24 
12 2 5 -
25 
13 1 1 -
26 
14 2 5 -
27 
17 2 5 -
28 
1A 1 2 -
29 
1B 1 1 -
30 
1C 3 6 -
31 
1E 3 6 a
32 
1F 3 5 a
33 
22 2 2 -
34 
23 1 1 -
35 
27 2 5 -
36 
2B 1 1 -
37 
2F 3 5 a
38 
32 2 5 -
39 
33 1 1 -
40 
34 2 4 -
41 
37 2 5 -
42 
3A 1 2 -
43 
3B 1 1 -
44 
3C 3 4 a
45 
3E 3 6 a
46 
3F 3 5 a
47 
42 2 2 -
48 
43 1 1 -
49 
44 2 3 -
50 
47 2 5 -
51 
4B 1 1 -
52 
4F 3 5 a
53 
52 2 5 -
54 
53 1 1 -
55 
54 2 4 -
56 
57 2 5 -
57 
5A 1 3 -
58 
5B 1 1 -
59 
5C 3 8 j
60 
5E 3 6 a
61 
5F 3 5 a
62 
61 2 6 a
63 
62 2 2 -
64 
63 1 1 -
65 
64 2 3 -
66 
65 2 3 a
67 
67 2 5 -
68 
69 2 2 a
69 
6B 1 1 -
70 
6C 3 6 -
71 
6D 3 4 a
72 
6F 3 5 a
73 
71 2 5 b
74 
72 2 5 a
75 
73 1 1 -
76 
74 2 4 -
77 
75 2 4 a
78 
77 2 5 -
79 
79 3 4 b
80 
7A 1 4 -
81 
7B 1 1 -
82 
7C 3 6 -
83 
7D 3 4 b
84 
7E 3 6 a
85 
7F 3 5 a
86 
80 2 3 a
87 
82 2 2 -
88 
83 1 1 -
89 
87 2 5 -
90 
89 2 2 -
91 
8B 1 1 -
92 
8F 3 5 a
93 
92 2 5 -
94 
93 1 1 -
95 
97 2 5 -
96 
9B 1 1 -
97 
9C 3 4 -
98 
9E 3 5 -
99 
9F 3 5 a
100 
A3 1 1 -
101 
A7 2 5 -
102 
AB 1 1 -
103 
AF 3 5 a
104 
B2 2 5 -
105 
B3 1 1 -
106 
B7 2 5 -
107 
BB 1 1 -
108 
BF 3 5 a
109 
C2 2 2 -
110 
C3 1 1 -
111 
C7 2 5 -
112 
CB 1 3 -
113 
CF 3 5 a
114 
D2 2 5 -
115 
D3 1 1 -
116 
D4 2 4 -
117 
D7 2 5 -
118 
DA 1 3 -
119 
DB 1 3 -
120 
DC 3 4 i
121 
DF 3 5 a
122 
E1 2 6 a
123 
E2 2 2 -
124 
E3 1 1 -
125 
E5 2 3 a
126 
E7 2 5 -
127 
E9 2 2 a
128 
EB 1 1 -
129 
ED 3 4 a
130 
EF 3 5 a
131 
F1 2 5 b
132 
F2 2 5 a
133 
F3 1 1 -
134 
F4 2 4 -
135 
F5 2 4 a
136 
F7 2 5 -
137 
F9 3 4 b
138 
FA 1 4 -
139 
FB 1 1 -
140 
FC 3 4 i
141 
FD 3 4 b
142 
FF 3 5 a