Arcom SBC104, Technical Manual

Page: 23 / 36

PC/104 Interface
Both 8-bit and 16-bit modules can fitted to the SBC104. The board complies with the PC/104
specification with the exception that the MASTER* signal line is not implemented on the 40-way
connector. The SBC104 is therefore the only master allowed in the system.
Care should be taken when installing modules, especially 16-bit types. Ensure that all the pins are
correctly aligned with the sockets on the SBC104 before pushing the module home. The module
should then be secured with the fixing kit provided with the add on module.
PC/104 Connector Pin Assignments
Page 23
2192-08704-000-000 J562 SBC104
0
Pin
Number
SK2
Row A
SK2
Row B
SK1
Row C
SK1
Row D
--
IOCHCHK*
SD7
SD6
SD5
SD4
SD3
SD2
SD1
SD0
IOCHRDY
AEN
SA19
SA18
SA17
SA16
SA15
SA14
SA13
SA12
SA11
SA10
SA9
SA8
SA7
SA6
SA5
SA4
SA3
SA2
SA1
SA0
0V --
0V
RESETDRV
+5V
IRQ9
--
--
-12V
ENDXFR*
+12V
--
SMEMW*
SMEMR*
IOW*
IOR*
DACK3*
DRQ3
DACK1*
DRQ1
REFRESH*
SYSCLK
IRQ7
--
IRQ5
IRQ4 (
Note 1)
IRQ3 ( Note 2)
--
TC
BALE
+5V
OSC
(14.318MHZ)
0V
0V
0V
SBHE*
LA23
LA22
LA21
LA20
LA19
LA18
LA17
MEMR*
MEMW*
SD8
SD9
SD10
SD11
SD12
SD13
SD14
SD15
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
0V
MEMCS16*
IOCS16*
IRQ10
IRQ11
IRQ12
IRQ15
--
DACK0*
DRQ0
DACK5*
DRQ5
DACK6*
DRQ6
DACK7*
DRQ7
+5V
--
0V
0V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32