SMART I/O User’s Manual
March 12, 1996
©1996 PEP Modular Computers GmbH
Page 6 - 14
Chapter 6 Communications Modules
6.1.9 OS-9 Programming
Due to the fact that the device descriptor for the serial I/O is burnt into
EPROM, it cannot be over-written with new values. Therefore a copy has to
be generated in RAM where the parameters may be manipulated. This
procedure is only useful for those users who wish to alter the default param-
eter settings. The procedure is therefore as follows :
From the $ prompt that is displayed under OS-9, copy the descriptor to the
ramdisk, thus
$ save scc3
<return>
change the revision number from 0 to 1 so that OS-9 selects the newest:-
$ fixmod -ua=8001 scc3
<return>
Module:scc3 - Fixing header parity - Fixing module CRC
now load the new revision into memory, i.e. a copy from the ramdisk:-
$ load -ld scc3
<return>
load:loaded /scc3
delete the copy held on the ramdisk to free the space:-
$ del scc3
<return>
check the port settings:-
$ xmode/scc3
<return>
/scc3
noupc bsp bsl echo if null=0 pause pag=24 bsp=08
del=18 eor=0D eof=1B reprint=04 dup=01 psc=17 abort=03
quit=05 bse=08 bell=07 type=00 baud=9600 xon=11
xoff=13 tabc=09 tabs=4
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