TS-7250 MANUAL
PC/104 BUS EXPANSION
Table: Signals on the 8-Bit Bus
Pin
Signal
Pin
Signal
A1
BHE#*
B1
GND
A2
Data 7
B2
RESET
A3
Data 6
B3
+5 V
A4
Data 5
B4
Data 8*
A5
Data 4
B5
Reserved
A6
Data 3
B6
RTC_CS*
A7
Data 2
B7
Reserved
A8
Data 1
B8
RTC_ALE*
A9
Data 0
B9
Reserved
A10
IOCHRDY
B10
GND
A11
Address 20*
B11
MEMW#
A12
Address 19
B12
MEMR#
A13
Address 18
B13
IOW#
A14
Address 17
B14
IOR#
A15
Address 16
B15
Reserved
A16
Address 15
B16
Reserved
A17
Address 14
B17
Data 9*
A18
Address 13
B18
Data 10*
A19
Address 12
B19
Address 21*
A20
Address 11
B20
Data 12*
A21
Address 10
B21
IRQ7
A22
Address 09
B22
IRQ6
A23
Address 08
B23
IRQ5
A24
Address 07
B24
GND*
A25
Address 06
B25
Data 11*
A26
Address 05
B26
Data 13*
A27
Address 04
B27
Data 14*
A28
Address 03
B28
Data 15*
A29
Address 02
B29
+ 5 V
A30
Address 01
B30
Osc (14.3 MHz))
A31
Address 00
B31
GND
A32
GND
B32
GND
* These signals have a non-standard usage.
6.1 Adding Serial Ports
If your project requires more than the included
TS-7250's
serial ports, additional ports
may be added via the PC/104 expansion bus. Technologic Systems offers three different
peripheral boards
(TS-SER1, TS-SER2, and TS-SER4) that add 1, 2, or 4 extra COM
ports respectively. These can be configured using PC designations COM1, COM2, or
higher.
These ports will appear in the PC/104 8-bit IO address space (
0x11E0_0000
base
address). For example, a TS-SER1 peripheral board can be jumper selected as COM4,
which would correspond to a PC I/O base address of 0x2E8. On the
TS-7250
, this COM
port will appear at the physical base address of 0x11E0_02E8. The PC/104 Expansion
Bus has IRQ5, IRQ6, and IRQ7 available for additional serial port interrupts.
Typically each serial port has a dedicated interrupt, but the TS-SER4 peripheral board
allows all four extra serial ports to share a single interrupt. This is very helpful in systems
with a large number of serial ports since there are a limited number of IRQ lines available.
Drivers are available in the TS-Linux distribution to support these extra COM ports.
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