3-22
Chapter 3: Software Installation – SCO Unix
Echo
User's Manual, ver. 0.00
Figure 13:
SCO Unix: IRQ settings
A
B
3
4
5
7 10 11 12 15
IRQ
J1
Note:
All ports are interrupting on channel A, IRQ 10
Step 2
You now must make an entry for the Echo adapter in the file
space.c
. This entry tells the operating system about the Echo
adapter:
1.
Change to
/etc/conf/pack.d/sio
directory and backup the file
space.c
.
2.
Open the file
space.c
with your editor. You will find listings
for many different serial adapters so search the list until you
find an entry for a Stargate adapter. The Stargate entries are
essentially compatible with the Echo adapter. This entry
should look like the following:
{2,STARGATE,8,4,8,(sd)0x280,0x280+STAR_POLL,8,
MCRBIT3},/*AT-Stargate*/
We can describe the parameters for this entry as follows:
{[COM #],[Board type],[# of ports],[IRQ],
[Minor #],[Port address],[Status port address],
[Bus width],[Modem control register]}
[Device description]