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NitroGrafx_todo.txt
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NitroGrafx_todo.txt
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NitroGrafx To Do:
-----------------
Add debug menu, "Step Frame".
arg support. Close menu, power on?
Fix click when a cd track starts and stops playing.
Exile needs 2kB BRAM only?
Turbo switches? Gun Boat. http://www.gamefaqs.com/tg16/588987-gunboat/faqs/27685
Investigate track-end/repeat, stop on track crossing.
Run the music player on the console.
Savestates for CD games as well. Write/load every part by itself.
Fix TAM/TMA #$00
Check the Games Express games. Data in track 1 is the problem?
Or should their BIOS lay "over" the normal?
Do both the normal BIOS and GE be loaded at the same time?
Fix bitswap for USA roms.
Fix so you can load roms even if the path is gone from the disc. Fixed?
Fix V flicker position (all games with statusbar etc.). Done?
Misc:
.
GUI:
Fix so you can turn on/off sprites/background.
Pad left and right to switch Tabs in GUI?
Graphic:
Convert palette via component.
Move all gfx logik to VDC, rewrite routines in order.
Count TV lines for real, not when the picture start showing.
Clean up the scaling routines.
Change so sprites can use 64kB VRAM.
Optimise vram adr inc. Read & Write addresses.
Split up doSprDMA, so that positions and tilenum are fixed first and then the tiles.
Write tiles directly after VBlank.
Optimise tile(map), rendering.
Sound:
Only load 3k per frame before music starts playing.
Add ADPCM emulation (MSM5205).
Load variable number of bytes?
Louder CD-sound. Add CD-Fade.
Optimise. Lower quality?
Check sound levels on the different level controls (master, channel & channel-left/right).
Add LFO emulation? (Hanii in the Sky, Juuouki, and Flash Hiders use LFO).
Games:
Champions Forever Boxing. Not working on CDROM?
Coryoon Child of dragon, no scrolling sometime.
Davis Cup Tennis.
Turrican, hangs at continue.
CPU:
Move rom_map to H6280 so that jmp becomes even faster.
Make list of all memory reads (mem, ram , io, sram).
Move mapper kod (0x53) to cpu code to get rid of branches.
Decimal mode still broken?
opcode length cycles
01 13 7
02 7 2
03 6 4
04 13 6
05 8 4
06 10 6
07 8 ?
08 12 3
09 7 2
0A 7 2
0B -- -
0C 15 7
0D 10 5
0E 12 7
0F 10/12 6/8
10 8 2/4
11 12 7
12 11 7
13 7 4
14 13 6
15 9 4
16 11 6
17 8 7
18 5 2
19 11 5
1A 6 2
1B -- -
1C 15 7
1D 11 5
1E 13 7
1F 10/12 6/8
20 15 7
21 13 7
22 7 3
23 7 4
24 11 4
25 8 4
26 11 6
27 8 7
28 12 4
29 7 2
2A 9 2
2B -- -
2C 13 5
2D 10 5
2E 13 7
2F 10/12 6/8 BBR 2
30 8/10 2/4 BMI
31 12 7
32 11 7
33 -- -
34 12 4
35 9 4
36 12 6
37 8 7
38 5 2
39 11 5
3A 6 2
3B -- -
3C 14 5
3D 11 5
3E 14 7
3F 10/12 6/8
40 16 7 RTI
41 13 7
42 7 3
43 TMA
44 13 8
45 8 4
46 9 6
47 8 7
48 7 3
49 7 2
4A 7 2
4B -- -
4C 8 4
4D 10 5
4E 12 7
4F 10 8
50 8/10 2/4
51 12 7
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5A
5B
5C
5D
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5F
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61 19 7
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6B
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7A
7B
7C
7D 17 5
7E
7F
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Code:
Add 4+4 bytes and get an average. ex. 24bit RGB.
eor r2,r0,r1
and r2,r2,#0x00FEFEFE
and r0,r0,r1
add r0,r0,r2,lsr#1