D765 Ver la hoja de datos (PDF) - NEC => Renesas Technology

Número de pieza

componentes Descripción

Lista de partido

D765

Single/Double Density Floppy-Disk Controller

NEC => Renesas Technology 

Table 4. Instruction Set (Notes I,

Version

Command

w

xxx10000

Seek

Command

Execution

Invalid

Command

W

0

0

00

1

111

W

X X X X X HD US,

W

NCN

W

Codes

Note:

(1) Symbols used in this table are described at the end of this section.

(2) should equal 1 for all operations.

(3) Don’t care, usually made to equal 0.

System Configuration

Figure 2 shows an example of a system using a

Command codes

Indicates 7658

indicates

Command c o d e

Head IS positioned over proper cylinder on diskette

Invalid Command codes (No op- goes state)

Figure 2. System Configuration

5-18

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