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ZX Spectrum Plus3 DiskB

   2   4   6   8  10  12  14  16  18  20  22  24  26  28  30  32  34
  .-. .-. .-. .-. .-. .-. .-. .-. .-. .-. .-. .-. .-. .-. .-. .-. .-.
|^^^^^^^^|^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^|
|________|____________________________________________________________|
  `-' `-' `-' `-' `-' `-' `-' `-' `-' `-' `-' `-' `-' `-' `-' `-' `-'
   1   3   5   7   9  11  13  15  17  19  21  23  25  27  29  31  33

                          (viewed from rear)

Pin Function
1 Ready
2 GND
3 SIDE 1 SELECT
4 GND
5 READ DATA
6 D4
7 WRITE PROTECT
8 GND
9 TRACK 0
10 GND
11 WRITE GATE
12 GND
13 WRITE DATA
14 GND
15 STEP
16 GND
17 DIRECTIONSELECT
18 GND
19 MOTOR ON
20 GND
21 not used
22 GND
23 DRIVE SELECT 1
24 GND
25 not used
26 GND
27 INDEX
28 GND
29 not used
30 GND
31 not used
32 GND
33 not used
34 GND

Amstrad Compatibility

The AMSTRAD model FD-1 may be added to the +3 system as an additional disk drive. To connect the FD-1 to the +3, you will require the AMSOFT DL-2 disk interconnecting lead. Connect the end of the lead which is fitted with the larger edge-connector plug, into the socket marked DISK B: at the back of the +3. Connect the other end of the lead which is fitted with a smaller plug, into the socket at the back of the FD-1 disk drive.

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