Specifications

Hardware Configuration
2-19
P1
Pin
Signal
Name
Function In/Out Current
(in mA)
PU/PD/Ser
*
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
RESET
+5V
IRQ2
-5V
DRQ2
-12V
N/A
+12V
N/A
-SMEMW
-SMEMR
-IOW
-IOR
-DACK3
DRQ3
-DACK1
DRQ1
-REFRESH
CLK
IRQ7
IRQ6
IRQ5
IRQ4
IRQ3
-DACK2
T/C
BALE
+5V
OSC
GND
GND
Ground
System Reset
+5v Power
Int Request 2
-5V Power
DMA Request 2
-12V Power
+12V Power
Key Pin
Mem Wrt, lo 1M
Mem Rd, lo 1M
I/O Write
I/O Read
DMA Ack 3
DMA Request 3
DMA Ack 1
DMA Request 1
Memory Refresh
CPU Clock
Int Request 7
Int Request 6
Int Request 5
Int Request 4
Int Request 3
DMA Ack 2
Terminal Count
Addrs Latch En
+5V Power
14.3MHz Clk
Ground
Ground
N/A
OUT
N/A
IN
N/A
IN
N/A
N/A
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
6
6
6
6
6
6
6
6
6
6
6
6
6
27K PU
27K PD
27K PD
27K PD
33 Ser
27K PU
27K PU
27K PU
27K PU
27K PU
* PU = Pull Up; PD = Pull Down; Ser = Series resistor. All values are in ohms.
Table 2-15. PC/104 Bus Connector (P1B)