◆ Peripheral data structure

The structure of the peripheral data is shown in Figure 3.12. Peripheral data consists of Saturn peripheral ID and peripheral data. The maximum number of peripheral data, excluding the Saturn peripheral ID, is 255 bytes.

Figure 3.12 Peripheral data structure

OREG Saturn Peripheral ID Extended data size Peripheral 1 1st data Peripheral 1 2nd data Peripheral 1 3rd data :: :: :: :: :: Peripheral 1 nst data

Composition of Saturn Peripheral ID bit7 bit4 bit3 bit0 Sega Saturn Peripheral Type Data size The extended data size is added for peripherals with a data size of 16 bytes or more. The maximum number of nth is n = 255 .