Mitsubishi Electric Apricot LS Pro, Техническое описание оборудования

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Chapter 4
Chapter 6
Chapter 4
Peripheral items
Appendix A
Appendix C
Pr
eface
Chapter 4
LS PRO HARDWARE TECHNICAL REFERENCE 4/19
Write data
If the write gate input is low, a low pulse on this input will write a bit of data on the disk.
Write gate
If this input is low, the write circuitry is enabled and data can be written to the disk via
the write data input.
Track 00
This is an output which is low when the read/write head is positioned on track 00 of
the disk.
Write protect
If a write protected disk is in the drive this output is low and the drive is unable to write
data.
Read data
When the drive is selected a low pulse is generated for each bit on the disk that is
detected.
Head select
This input selects the read/write head. If low, head 1 is selected, if high, head 0 is
selected.
Disk change
This output is low whenever a disk is removed from the drive. It remains low until a
disk is inserted, and the disk change reset signal has been received.
4.5 KEYBOARD
Introduction
The keyboard has 102-keys in the same layout as the IBM AT enhanced keyboard. It
provides the full range of QWERTY typewriter keys, special editing and function keys
and a number pad at the right hand side of the keyboard.
The following illustration shows the layout of the keys and the key legends on the UK
keyboard.
Esc F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F12 F11
Print
Scrn
Scroll
Lock
Pause
!
1 2
£
3
$
4
%
5
^
6 7 8 9 0
_
- =
+
{ }
[ ] P O I U Y T R E W Q
A S D F G H J K L
;
: @
'
?
/
>
.
<
,
M N B V C X
Z
Caps Lock
Ctrl Alt Alt Gr Ctri
Insert Home Page
Up
Delete End
Page
Down
Num
Lock
/ * -
7
Home 8 9
Pg Up
4 5 6
1 2 3
0
Ins
.
Del
Enter
+
Pg Dn
apricot
1 A
|
\
( ) * &
Break SysRq
~
#
End