Table B.9
Flexible Disc Media Byte
(40:090H)
Bit
Data
Definition
07H-06H
0
Data transfer rate is 500kb/sec
1
Data transfer rate is 300kb/sec
2
Data transfer rate is 250kb/sec
OSH
0
Single step all seeks
1
Double step all seeks
04H
0
Type of disc in drive unknown
1
Type of disc in drive known
03H
- -
Reserved
02H-OOH
0
Attempting 360k disc in 360k drive
1
Attempting 360k disc in 1.2mb drive
2
Attempting 1.2mb disc in 1.2mb drive
3
Determined 360k disc in 360k drive
4
Determined 360k disc in 1.2mb drive
5
Determined 1.2mb disc in 1.2mb drive
8.2.17
Keyboard Mode Indicator
This byte is used by the keyboard driver to store the current state of the keyboard LED's.
362
Memory Map
Keyboard LED flags
(see table 8.10)
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