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Keyboard
The keyboard connector is a 6-pin DIN defined in the
following table:
Pin Signal
1
Data
2
not used
3
Ground
4
EXM Expansion Connector
The EXM expansion connector on the rear of the EPC is a 116-pin cardedge
connector. The mating connector is an AMP 650090-1 or equivalent. Pins A1
through A58 are on the component side of the board with pin A1 at the bottom of the
board. Pins B1 through B58 are on the solder side of the board with pin B1at the
bottom of the board. The pin assignments are listed in the tables below followed by
signal definitions.
A-Row:
Pin
Signal
Pin
A1
(unused)
A16 IRQ12
A2
(reserved)
A17 IRQ11
A3
+5V
A18 IRQ7
A4
+5V
A19 IRQ5
A5
SD15
A20 +5V
A6
SD13
A21 (reserved)
A7
SD11
A22 -IOCHK
A8
(unused)
A23 DRQ6
A9
SD9
A24 DRQ5
A10 SD7
A25 DRQ3
A11 SD5
A26 DRQ2
A12 (unused)
A27 DRQ1
A13 SD3
A28 DRQ0
A14 SD1
A29 -DACK6
A15 IRQ15
A30 -DACK5
Table 9. EXM Expansion Card A-Row Pin-out.
Page 20
EPC-23 Hardware Reference
Pin Signal
4
+5V
5
Clock
6
not used
Table 8. Keyboard Connector Pin-out.
Signal
Pin
Signal
A31 -DACK3
A32 -DACK2
A33 -MASTER
A34 -DACK1
A35 -DACK0
A36 -SBHE
A37 +5V
A38 AEN
A39 LA23
A40 LA21
A41 LA19
A42 LA17
A43 TC
A44 SA15
4
2
6
1
5
3
Pin
Signal
A45 SA13
A46 (key)
A47 (key)
A48 SA11
A49 SA9
A50 OSC
A51 SA7
A52 SA5
A53 SA3
A54 SA1
A55 +5V
A56 +5V
A57 -RESETIN
A58 (unused)
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