STN-38

racing controller manual

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Contents

Racing controller manual

Ver1.00

■Racing controller overview

A single-axis analog peripheral specifically designed for racing games.
The main unit is equipped with X, Y, Z, start, A, B, C buttons and a butterfly shift on the single-axis handle. In addition, the digital bits (Right, Left, Down, Up) are output on the left and right sides of the handle, respectively (Left, Right), the butterfly shift on the right side is output (Down), and the butterfly shift on the left side is (Up).

L and R buttons are not equipped.

■Racing controller data format

●Saturn peripheral ID

Saturn peripheral type: 1H (analog device)

Data size: 3H (3 bytes)

racing controller data format

	bit7	bit6	bit5	bit4	bit3	bit2	bit1	bit0
Peripheral ID	0	0	0	1	0	0	1	1
1st data	Right	Left	Down	Up	Start	ATRG	CTRG	BTRG
2nd data	1	XTRG	YTRG	ZTRG	1	1	1	1
3rd data	AX7	AX6	AX5	AX4	AX3	AX2	AX1	AX0

Start, ATRG, CTRG, BTRG, XTRG, YTRG, ZTRG become 0 (ON) when the button is pressed.

Down and Up of the butterfly shift will be 0 (ON) when you put it in the front.

AX7 to AX0 output the absolute value of the A/D converter output without sign.

For AX7 to AX0, the left is 0 and the right is 255. The center is 127. (See Figure 1)

Note: The lower 3 bits of the 2nd data (=111B) are reserved for future expansion, so programming that expects this data to be "1" is prohibited.

●About digital bits

Digital bit threshold (Note: the actual trajectory is an arc)

            Center
   ←Turn left     Turn right→
      ←   →    |    ←   →
     O N OFF   |   OFF O N
−−+−−−+−−−+−−−−+−−−−+−−−+−−−+−−
 00h 67h 6Fh  7Fh  8Fh 97h FFh
 -80 -15 -10  00°  +10 +15 +80

Right is "0" (ON) when AX is 97H (+15°) or higher, and "1" (OFF) when AX is 8FH (+10°) or lower.

Left is "0" (ON) when AX is below 67H (-15°) and "1" (OFF) when it is below 6FH (-10°).

Down is "0" (ON) when you pull the right side of the butterfly shift toward you, and "1" (OFF) when you release it.

Up is "0" (ON) when you pull the left side of the butterfly shift toward you, and "1" (OFF) when you release it.