FDC37B80X View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

FDC37B80X

PC98/99 compliant enhanced super I/O controller with Keyboard / Mouse Wake-Up / 5 Volt Operation

SMSC -> Microchip 

STATUS REGISTER ENCODING

During the Result Phase of certain commands, the Data Register contains data bytes that give the

status of the command just executed.

BIT NO.

7,6

5

4

3

2

1,0

SYMBOL

IC

SE

EC

H

DS1,0

Table 13 - Status Register 0

NAME

DESCRIPTION

Interrupt

Code

00 - Normal termination of command. The specified

command was properly executed and completed

without error.

01 - Abnormal termination of command. Command

execution was started, but was not successfully

completed.

10 - Invalid command. The requested command

could not be executed.

11 - Abnormal termination caused by Polling.

Seek End

The FDC completed a Seek, Relative Seek or

Recalibrate command (used during a Sense Interrupt

Command).

Equipment

Check

The TRK0 pin failed to become a "1" after:

1. 80 step pulses in the Recalibrate command.

2. The Relative Seek command caused the FDC to

step outward beyond Track 0.

Unused. This bit is always "0".

Head

Address

The current head address.

Drive Select The current selected drive.

29

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