Table 3.33 Megadrive 3-button pad data format when connected to Sega Tap

Up

bit3	bit2	bit1	bit0
Right	Left	Down
Start	A TRG	C TRG	B TRG

∙ Right, Left, Down, Up, Start, A TRG, C TRG, and B TRG are 0 when the button is pressed.

(b) Mega Drive 6 Button Pad
Table 3.34 shows the data format of Mega Drive 6-button PAD when connected to Sega Tap.

Table 3.34 Mega Drive 6 Button Pad Data Format with Sega Tap Connected

Up

bit3	bit2	bit1	bit0
Right	Left	Down
Start	A TRG	C TRG	B TRG
MODE	X TRG	Y TRG	Z TRG

* Right, Left, Down, Up, Start, A TRG, C TRG, B TRG, MODE, X TRG, Y TRG, Z TRG are 0 when the button is pressed.

(c) Sega Mouse
Table 3.35 shows the data format of Sega Mouse when connected to Sega Tap.

Table 3.35 Sega Mouse Data Format when Sega Tap is Connected

Left

XD4

XD0

YD4

YD0

bit3	bit2	bit1	bit0
Y Over	X Over	Y Sign	X Sign
Start	Middle	Right
XD7	XD6	XD5
XD3	XD2	XD1
YD7	YD6	YD5
YD3	YD2	YD1

Y Over, X Over 0: X or Y data is valid.
: 1: Data overflows. (Over 255)
Y Sign, X Sign 0: The data of X, Y is a positive value.
* 1: X and Y data are negative values.