Ampro Corporation LITTLE BOARD P5X - Manual (Page 75)

Little Board/P5x Technical Manual
2–57
Table 2– 51. PC/104 Expansion Bus Connector, P1 (B1-B32)
Pin
Signal
Name Function In/Out
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
GND
RESETDRV
+5V
IRQ9
-5V
DRQ2
-12V
ZWS*
+12V
N/A
SMEMW*
SMEMR*
IOW
IOR
DACK3*
DRQ3
DACK1*
DRQ1
REFRESH*
SYSCLK
IRQ7
IRQ6
IRQ5
IRQ4
IRQ3
DACK2*
TC
BALE
+5V
OSC
GND
GND
Ground
System reset signal
+5 Volt power
Interrupt request 9
To J16-3
DMA request 2
To J16-1
Zero wait state
To J10-1
Keyed pin
Mem Write(lwr 1MB)
Mem Read(lwr 1MB)
I/O Write
I/O Read
DMA Acknowledge 3
DMA Request 3
DMA Acknowledge 1
DMA Request 1
Memory Refresh
Sys Clock
Interrupt Request 7
Interrupt Request 6
Interrupt Request 5
Interrupt Request 4
Interrupt Request 3
DMA Acknowledge 2
DMA Terminal Count
Address latch enable
+5V power
14.3 MHz clock
Ground
Ground
N/A
OUT
N/A
IN
N/A
IN
N/A
IN
N/A
N/A
I/O
I/O
I/O
I/O
OUT
IN
OUT
IN
I/O
OUT
IN
IN
IN
IN
IN
OUT
OUT
OUT
N/A
OUT
N/A
N/A