Basic I/O Interface. Instruksi I/O ◦ IN ◦ OUT ◦ INS ◦ OUTS.

Presentasi berjudul: "Basic I/O Interface. Instruksi I/O ◦ IN ◦ OUT ◦ INS ◦ OUTS."— Transcript presentasi:

1 Basic I/O Interface

2 Instruksi I/O ◦ IN ◦ OUT ◦ INS ◦ OUTS

3 Isolated dan Memory Mapped I/O

4 Basic Input dan Output Interface

5 I/O Port Address Decoding ◦ I/O port address decoding = memory address decoding  The main difference between memory decoding and isolated I/O decoding is the number of address pins connected to the decoder.  Untuk memori : A 32 -A 0, A 23 - A 0 atau A 19 - A 0  Untuk I/O addressing : A 7 - A 0

6 Decoding 8-Bit I/O Port Addresses

7 The Programmable Peripheral Interface (PPI) – 82C55 A A B B

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9 Mode Operasi Mode 0 Mode 1 Mode 2

10 Common Byte A Common Byte B

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15 Buatlah rangkaian I/O interface untuk 8 buah I/O yang ingin diakses pada port 70H – 77H Buatlah rangkaian 82C55 yang dihubungkan ke mikroprosesor pada port F0H, F4H, F8H, FCH