Chapter 3: Software Installation - QNX 4.XX
3-17
Echo
User's Manual, ver. 0.00
The command line example shown below assumes that COM1
and COM2 are port 1 and port 2 on the Echo adapter.
Example:
Dev.ser 3f8,4 2f8,3 310,4 318,3 320,4 328,3 330,4 338,3 &
The above example configures an Echo adapter port 1 for
COM1 at 3F8 hex, IRQ4; port 2 at COM2 at 2F8 hex, IRQ 3
and all other port addresses at 310, 318, 320, 328, 330, 338 hex
respectively. All odd ports will interrupt on IRQ 4, channel A
and all even ports on IRQ 3, channel B. Please refer to
Figures
10
and
11
for the DIP switch and jumper settings for your Echo
adapter and
Figures 1, 2,
and
3
in
Chapter 1: Introduction
for
the location of switch block SW1 and jumper block J1.
Technical Tip
You can run under DOS the DOS programs
porttest.exe
and
portfind.exe
to verify your settings and assure you have no
hardware conflicts. You will find these programs on the
DFlex
DOS Driver
diskette (p/n: DISK306).
Figure 10:
QNX 4.XX: switch settings
Reserved - must be OFF
Base address sets:
Status port address
Status port is disabled
IRQ channel(s)
IRQ line for odd ports is on channel A
SW1
Port 3 = address 310 hex
Port 4 = address 318 hex
Port 5 = address 320 hex
Port 6 = address 328 hex
Port 7 = address 330 hex
Port 8 = address 338 hex
IRQ line for even ports is on channel B
Port 2 is COM2 (2F8 hex)
Port 1 is COM1 (3F8 hex)
