Dance Dance Revolution 2nd Mix (GN895 VER. JAA) 

Title: Dance Dance Revolution 2nd Mix (GN895 VER. JAA)
Name: ddr2m
Averall status: imperfect
Year: 1999
Category: Rhythm / Dance
Manufacturer: Konami
Available since MAME™ version: 0.110u2
Player(s): Two players simultaneously
BIOS: This ROM requires "sys573" BIOS tu run
CHDs: Necessary with this ROM! Consult medias section.

Emulation: good
Color: good
Sound: imperfect
Graphic: imperfect

Save state: available

Palette size: 65536 colors
Type: raster
Screen rotation: 0 degrees
Screen size: 640x480 pixels
Refresh rate: 60Hz

Main CPU : PSX
Sound Chips : SPU, CD/DA
Palette colors : 65536
Players : 2
Buttons : 6

MAME needs 2 dumps to start the ROM "ddr2m":

• "700a01.22g"
  

  Size: 512Kb (524 288 bytes)
  Region: user1
  Offset: 0
  Merge: 700a01.22g
  CRC checksum: 11812ef8
  MD5 checksum:
  SHA1 checksum: e1284add4aaddd5337bd7f4e27614460d52b5b48

• "gn895jaa.u1"
  

  Size: 548 bytes
  Region: user2
  Offset: 0
  Merge:
  CRC checksum: 363f427e
  MD5 checksum:
  SHA1 checksum: adec886a07b9bd91f142f286b04fc6582205f037

0.110u2 [smf]
CD-ROM required
WIP:
- 0.117u3: smf added clone 'Dance Dance Revolution Best of Cool Dancers (GE892 VER. JAA)'. Version (GN895 VER. JAA) is now original. smf added some basic CDROM switching to the system 573 driver. Hooked it up for 'Dance Dance Revolution Best of Cool Dancers' to work and the Club versions. Added DIP locations. Moved fake switches to the configuration menu.
- 20th June 2007: smf - Never seen 'DDR Best of Cool Dancers' before, it's a tournament version of DDR that only has 4 songs. The CD has no audio, you need a DDR/DDR 2nd Mix CD to play it.
- 0.113: Added clones 'Dance Dance Revolution 2nd Mix with beatmaniaIIDX CLUB VERSiON' (GE896 VER. JAA) and 'Dance Dance Revolution 2nd Mix with beatmaniaIIDX substream CLUB VERSiON 2' (GE984 VER. JAA).
- 0.112u3: Renamed (ddr2ndl) to (ddr2ml) and (ddr2nd) to (ddr2m).
- 25th February 2007: smf - Unfortunately there are no arrows or music in any of these (see screenshots).
- 0.110u2: smf added 'Dance Dance Revolution 2nd Mix' (GN895 VER. JAA) (Konami 1999) and 'Dance Dance Revolution 2nd Mix Link' (GE885 VER. JAA).
- 12th November 2006: smf - Gone Dancin'. Screenshots from Dancing Stage, Dance Dance Revolution + jp version and Dance Dance Revolution 2nd Mix.
- 18th March 2006: Guru - DDR 2nd Mix arrived late yesterday from Japan.
- 10th October 2005: Guru - DDR 1st mix (black cd) 845JAB02, DDR 1st mix (purple cd) 845JBA02, DDR 1st mix (jade cd) 845AAA02, DDR Solo 2000 (black cd) 905JAA02, DDR Solo Bass Mix (black cd) 894JAA02, DDR 3rd mix (black cd) 887JAA02, DDR 3rd mix (violet cd) 887KAA02, DDR 3rd mix (violet cd) 887KBA02, DDR 3rd mix (pink cd) 887AAA02, DDR 3rd mix plus (black cd) A22JAA02, DDR 4th mix plus (black cd) A34JAA02, DDR 5th mix (black cd) A27JAA02, DDR 6th mix-Max (black cd) B19JAA02 and DDR 7th mix-Max2 (black cd) B20JAA02 arrived earlier this morning in a 'Top-Secret' local deal.
Recommended Games:
Dance Dance Revolution Solo 2000
Dance Dance Revolution Solo Bass Mix
Dance Dance Revolution 2nd Mix
Dance Dance Revolution 3rd Mix
Dance Dance Revolution 3rd Mix Plus
Dance Dance Revolution 4th Mix
Dance Dance Revolution 4th Mix Plus
Dance Dance Revolution 4th Mix Plus Solo
Dance Dance Revolution 4th Mix Solo
Dance Dance Revolution 5th Mix
DDR Max - Dance Dance Revolution 6th Mix
DDR Max 2 - Dance Dance Revolution 7th Mix
Dance Dance Revolution USA
Dance Dance Revolution Extreme
Romset: 1 kb / 1 files / 152 zip
CD-ROM: 691.0 MB (Compressed: 581.0)

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1. Dance Dance Revolution (1998)
2. Dance Dance Revolution 2nd Mix (1999)
3. Dance Dance Revolution 2nd Mix with beatmaniaIIDX CLUB VERSiON (1999)
4. Dance Dance Revolution 2nd Mix with beatmaniaIIDX substream CLUB VERSiON 2 (1999)
5. DDR Best of Cool Dancers (1999)
6. Dance Dance Revolution 3rd Mix (2000)
7. Dance Dance Revolution 3rd Mix Plus (2000)
8. Dance Dance Revolution 4th Mix (2000)
9. Dance Dance Revolution 4th Mix Plus (2000)
10. Dance Dance Revolution 5th Mix (2001)
11. DDR MAX - Dance Dance Revolution 6th Mix (2001)
12. DDR MAX 2 - Dance Dance Revolution 7th Mix (2002)
13. Dance Dance Revolution Extreme (2002)
14. Dance Dance Revolution Extreme 2 (2005, Sony PlayStation 2)
15. Dance Dance Revolution with Mario (2005, Nintendo GameCube)
16. Dance Dance Revolution SuperNOVA (2006)
17. Dance Dance Revolution SuperNOVA 2 (2007)

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* Consoles :
Sony PlayStation (1999)
Sega Dreamcast (2000)

Grades : SS - S - A - B - C - D - E
The formula for calculating the score for a combo is a bit complicated, the point value for any step in a combo depends on two factors :
* Perfects are worth 3 times as much as Greats.
* The point value for a step increases every time the combo increases by 4.
The exact formula for the score of a combo is...
let [x] denote the greatest integer function (i.e., where [x] is the greatest integer less than or equal to x). Then, the point value for the nth step in a combo is :
S(n) = G(n) if the nth step is a Great, or P(n) if the nth step is a Perfect;
G(n) = 100 ([n/4]^2 + 1);
P(n) = 3G(n);

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No video recorded.

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