参数资料
型号: 37C669
厂商: SMSC Corporation
英文描述: DIODE SCHOTTKY SINGLE 25V 200mW 0.5V-vf 200mA-IFM 30mA-IF 2uA-IR SOD-323 3K/REEL
中文描述: 电脑98/99顺从超级I / O软盘控制器与红外线支持
文件页数: 93/164页
文件大小: 621K
代理商: 37C669
34
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.
Table 14 - Status Register 0
BIT NO.
SYMBOL
NAME
DESCRIPTION
7,6
IC
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.
5
SE
Seek End
The FDC completed a Seek, Relative Seek or
Recalibrate command (used during a Sense Interrupt
Command).
4
EC
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.
3
Unused. This bit is always "0".
2
H
Head
Address
The current head address.
1,0
DS1,0
Drive Select
The current selected drive.
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