●●● 13.2 /0 Hardware ●●●● ●●●●● ●●●● ●●●0● o 0 transfer Data transfer) ●●●0 Registers Typically o controller has 4 ty pes of registers Status registers Control registers Data-in registers Data-out registers o These device registers have addresses, that can be accessed by processor10 13.2 I/O Hardware ⚫ I/O transfer (Data transfer) ⚫ Registers ⚫ Typically I/O controller has 4 types of registers ▪ Status registers ▪ Control registers ▪ Data-in registers ▪ Data-out registers ⚫ These device registers have addresses, that can be accessed by processor