Frame timing

Line timing

Notes:

• Sprite indices are given negatively. Sprites are filtered for every line, and are drawn from last found to first found.
• Fetches may be off by one cycle. This stuff is complicated.

Cycle	Quadrant
	CPU	Display				Sound	Palette
		Mono/2BPP	Color/2BPP	Color/4BPP	Line 144
0	V30MZ	TODO	Fetch screen 1 cell (0, Y)	TODO	Sprite table DMA Copy one word every cycle		Fetch palette for pixel (N, Y - 1)
1			Fetch tile data for above
2			Fetch screen 1 cell (1, Y)
3			Fetch tile data for above
4			Fetch screen 1 cell (2, Y)
5			Fetch tile data for above
6			Fetch screen 1 cell (3, Y)
7			Fetch tile data for above
8			Fetch screen 1 cell (4, Y)
9			Fetch tile data for above
10			Fetch screen 1 cell (5, Y)
11			Fetch tile data for above
12			Fetch screen 1 cell (6, Y)
13			Fetch tile data for above
14			Fetch screen 1 cell (7, Y)
15			Fetch tile data for above
16			Fetch screen 1 cell (8, Y)
17			Fetch tile data for above
18			Fetch screen 1 cell (9, Y)
19			Fetch tile data for above
20			Fetch screen 1 cell (10, Y)
21			Fetch tile data for above
22			Fetch screen 1 cell (11, Y)
23			Fetch tile data for above
24			Fetch screen 1 cell (12, Y)
25			Fetch tile data for above
26			Fetch screen 1 cell (13, Y)
27			Fetch tile data for above
28			Fetch screen 1 cell (14, Y)
29			Fetch tile data for above
30			Fetch screen 1 cell (15, Y)
31			Fetch tile data for above
32			Fetch screen 1 cell (16, Y)
33			Fetch tile data for above
34			Fetch screen 1 cell (17, Y)
35			Fetch tile data for above
36			Fetch screen 1 cell (18, Y)
37			Fetch tile data for above
38			Fetch screen 1 cell (19, Y)
39			Fetch tile data for above
40			Fetch screen 1 cell (20, Y)
41			Fetch tile data for above
42			Fetch screen 1 cell (21, Y)
43			Fetch tile data for above
44			Fetch screen 1 cell (22, Y)
45			Fetch tile data for above
46			Fetch screen 1 cell (23, Y)
47			Fetch tile data for above
48			Fetch screen 1 cell (24, Y)
49			Fetch tile data for above
50			Fetch screen 1 cell (25, Y)
51			Fetch tile data for above
52			Fetch screen 1 cell (26, Y)
53			Fetch tile data for above
54			Fetch screen 1 cell (27, Y)
55			Fetch tile data for above
56			Fetch screen 1 cell (28, Y)
57			Fetch tile data for above
58			Fetch screen 1 cell (29, Y)
59			Fetch tile data for above
60			Fetch screen 1 cell (30, Y)
61			Fetch tile data for above
62			Fetch screen 1 cell (31, Y)
63			Fetch tile data for above
64	Fetch screen 1 cell (0, Y)
65	Fetch tile data for above
66	Fetch screen 2 cell (0, Y)
67	Fetch tile data for above
68	Fetch screen 2 cell (1, Y)
69	Fetch tile data for above
70	Fetch screen 2 cell (2, Y)
71	Fetch tile data for above
72	Fetch screen 2 cell (3, Y)
73	Fetch tile data for above
74	Fetch screen 2 cell (4, Y)
75	Fetch tile data for above
76	Fetch screen 2 cell (5, Y)
77	Fetch tile data for above
78	Fetch screen 2 cell (6, Y)
79	Fetch tile data for above
80	Fetch screen 2 cell (7, Y)
81	Fetch tile data for above
82	Fetch screen 2 cell (8, Y)
83	Fetch tile data for above
84	Fetch screen 2 cell (9, Y)
85	Fetch tile data for above
86	Fetch screen 2 cell (10, Y)
87	Fetch tile data for above
88	Fetch screen 2 cell (11, Y)
89	Fetch tile data for above
90	Fetch screen 2 cell (12, Y)
91	Fetch tile data for above
92	Fetch screen 2 cell (13, Y)
93	Fetch tile data for above
94	Fetch screen 2 cell (14, Y)
95	Fetch tile data for above
96	Fetch screen 2 cell (15, Y)
97	Fetch tile data for above
98	Fetch screen 2 cell (16, Y)
99	Fetch tile data for above
100	Fetch screen 2 cell (17, Y)
101	Fetch tile data for above
102	Fetch screen 2 cell (18, Y)
103	Fetch tile data for above
104	Fetch screen 2 cell (19, Y)
105	Fetch tile data for above
106	Fetch screen 2 cell (20, Y)
107	Fetch tile data for above
108	Fetch screen 2 cell (21, Y)
109	Fetch tile data for above
110	Fetch screen 2 cell (22, Y)
111	Fetch tile data for above
112	Fetch screen 2 cell (23, Y)
113	Fetch tile data for above
114	Fetch screen 2 cell (24, Y)
115	Fetch tile data for above
116	Fetch screen 2 cell (25, Y)
117	(SDMA) Initialize	Fetch tile data for above
118		Fetch screen 2 cell (26, Y)
119		Fetch tile data for above
120		Fetch screen 2 cell (27, Y)
121		Fetch tile data for above
122	(SDMA) Fetch RAM byte	Fetch screen 2 cell (28, Y)	Reset sound output
123	(SDMA) Write sound port	Fetch tile data for above	Fetch channel 1 wavetable sample
124	V30MZ	Fetch screen 2 cell (29, Y)	Fetch channel 2 wavetable sample Add channel 1 output
125		Fetch tile data for above	Fetch channel 3 wavetable sample Add channel 2 output
126		Fetch screen 2 cell (30, Y)	Fetch channel 4 wavetable sample Add channel 3 output
127		Fetch tile data for above	Add channel 4 output
128		Fetch screen 2 cell (31, Y)
129		Fetch tile data for above
130		Fetch screen 2 cell (0, Y)
131		Fetch tile data for above
132		TODO
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158		Fetch tile data for sprite -1
159		TODO
160		Fetch tile data for sprite -2
161		TODO
162		Fetch tile data for sprite -3
163		TODO
164
165
166		Fetch tile data for sprite -4
167		TODO
168		Fetch tile data for sprite -5
169		TODO
170		Fetch tile data for sprite -6
171		TODO
172
173
174		Fetch tile data for sprite -7
175		TODO
176		Fetch tile data for sprite -8
177		TODO
178		Fetch tile data for sprite -9
179		TODO
180
181
182		Fetch tile data for sprite -10
183		TODO
184		Fetch tile data for sprite -11
185		TODO
186		Fetch tile data for sprite -12
187		TODO
188
189
190	Fetch tile data for sprite -13
191	TODO
192	Fetch tile data for sprite -14
193	TODO
194	Fetch tile data for sprite -15
195	TODO
196
197
198	Fetch tile data for sprite -16
199	TODO
200	Fetch tile data for sprite -17
201	TODO
202	Fetch tile data for sprite -18
203	TODO
204
205
206	Fetch tile data for sprite -19
207	TODO
208	Fetch tile data for sprite -20
209	TODO
210	Fetch tile data for sprite -21
211	TODO
212
213
214	Fetch tile data for sprite -22
215	TODO
216	Fetch tile data for sprite -23
217	TODO
218	Fetch tile data for sprite -24
219	TODO
220
221
222	Fetch tile data for sprite -25
223	TODO
224	Fetch tile data for sprite -26	TODO
225	TODO
226	Fetch tile data for sprite -27
227	TODO
228
229
230	Fetch tile data for sprite -28
231	TODO
232	Fetch tile data for sprite -29
233	TODO
234	Fetch tile data for sprite -30
235	TODO
236
237
238	Fetch tile data for sprite -31
239	TODO
240	Fetch tile data for sprite -32
241	TODO
242
243
244
245			(SDMA) Initialize
246
247
248
249
250			(SDMA) Fetch RAM byte	Reset sound output
251			(SDMA) Write sound port	Fetch channel 1 wavetable sample
252			V30MZ	Fetch channel 2 wavetable sample Add channel 1 output
253				Fetch channel 3 wavetable sample Add channel 2 output
254				Fetch channel 4 wavetable sample Add channel 3 output
255				Add channel 4 output