Konami Bemani System 573 Analog Hardware
Main CPU : R3000A 32 bit RISC processor, Clock - 33.8688MHz, Operating performance - 30 MIPS, Instruction Cache - 4KB
BUS : 132 MB/sec.
OS ROM : 512 Kilobytes
Additional Sound Chips : Playstation SPU, 24 Channels, 44.1KHz sample rate, PCM audio source, Digital effects include: Envelope, Looping, Digital Reverb, Load up to 512K of sampled waveforms, Supports MIDI Instruments.
Main RAM: 2 Megabytes
Video RAM: 2 Megabyte
Sound RAM : 512 Kilobytes
Graphical Processor : 360,000 polygons/sec, Sprite/BG drawing, Adjustable frame buffer, No line restriction, 4,000 8x8 pixel sprites with individual scaling and rotation, Simultaneous backgrounds (Parallax scrolling)
Sprite Effects : Rotation, Scaling up/down, Warping, Transparency, Fading, Priority, Vertical and horizontal line scroll
Resolution : 256x224 - 740x480
Colours : 16.7 million colors, Unlimited CLUTs (Color Look-Up Tables)
Other Features : custom geometry engine, custom polygon engine, MJPEG decoder
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);
Hidden Mode : To activate Hidden mode, push the joystick UP, DOWN, UP, DOWN, UP, DOWN prior to selecting a skill level (Hidden mode will make half of the arrows disappear).
Another Mode : At the song select screen, press : DOWN, DOWN, DOWN, LEFT, LEFT, RIGHT, RIGHT
Little difficulty : Press LEFT, DOWN, RIGHT, DOWN, LEFT, DOWN, RIGHT, DOWN, UP at the song selection screen (The word 'Little' confirms correct entry). In Little mode, dancing is easier.
Maniac difficulty : Press DOWN, DOWN, DOWN, RIGHT, UP, UP, LEFT or DOWN, DOWN, LEFT, LEFT, LEFT, RIGHT, RIGHT, RIGHT, LEFT, RIGHT prior to selecting a skill level (The word 'Maniac' confirms correct entry). Note : To disable Maniac mode, press UP(x8) at the song selection screen.
Play as Socket Man : Hold left Select and press Start.
Shuffle mode : Press UP, DOWN, LEFT, RIGHT, DOWN, UP, RIGHT, LEFT at the song selection screen (The word 'Shuffle' confirms correct entry). In Shuffle mode, there are new dance steps.
Unlock 2P Modes : To unlock 2-Player modes, push 1P Start button. Then hold 2P's right and left Select buttons while pushing 2P Start (This code unlocks Couple, VS, and Double modes).
Dancers face right : Press Right (x8) at the song selection screen (The word 'Right' confirms correct entry). In Right mode, dancers face right.
Dancers face left : Press Left (x8) at the song selection screen (The word 'Left' confirms correct entry). In Left mode, dancers face left.
All songs : Highlight Hard mode and press Right Select button (x4).