Kurzweil PC88 - Page 95

Chapter 4 Troubleshooting
37451 Microcontroller, U17 Engine Board
Following is a table of the signals processed by the
37451 Microcontroller.
Analog Inputs
Signal KBDuC Comments
Pin No.
AINO 65 Left-Hand Slider
AIN1 64 Left, Center Slider
AIN2 63 Right, Center Slider
AIN3 62 Right-Hand Slider
AIN4 61 Pitch Wheel
AINS5 60 Mod Wheel
AIN6 59 Mono Pressure Strip
AIN7 58 External MUX
External MUX
Signal CD4051 Comments
Pin No.
INO 13 Battery
IN1 14 Encoder Select
IN2 15 Reserved
IN3 12 Reserved
IN4 1 Pedal 1
IN5 5 Pedal 2
IN6 2 Pedal 3
IN7 4 Pedal 4
External MUX Control
Signal KBDuC Comments
Pin No
P57/SLD7 4 Select Bit 2
P15/A13 44 Select Bit 1
P14/A12 45 Select Bit 0
PC88 Service Manual
4-15