Description of CEI-100/200 ARINC Interface Loading the Board
CEI-100/CEI-200/CEI-x20 User’s Manual 160
Loading the Board
Prior to using a board, its firmware must be loaded. You do this by
entering the following command at the DOS command line for each CEI-
100/200 board in the system. Typically, this would go in the
AUTOEXEC.BAT file:
CONDOR /SA [/M XXXX] [/I XXX] [/X]
The /SA switch tells it to load the control program and exit.
The optional /M and /I switches specify non-default base segment and
base I/O addresses, respectively. This action replaces the call to
AR_LOADSLV that you would make if using the supplied utility
libraries.
The /X switch indicates the presence of extra memory (8K bytes on
the CEI-100 or 32K bytes on the CEI-200.)
Controlling the Board
The board is controlled using standard I/O commands. Initially, the board
is loaded and left in a reset state. All commands are byte output of value
0. The following offsets from the base I/O address have the function:
0 “Reset” - puts the board in a reset state.
1 “Go” - starts the board.
2 “Interrupt slave” - generates an interrupt on the slave. Not used in the
current firmware.
3 “Reset interrupt” - resets an interrupt from the slave.
An assembly language example to start a board configured at the default
I/O base address (0380h) follows:
mov al,0
mov dx,0381h
out dx,al
Initializing the Board
After loading the board, and before you start it (with a “go”), you can
initialize it by writing to specific control registers. You can’t initialize it
while it is running, since the firmware only executes the initialization
sequence once per “go” command. To change parameters on a running
system, the board must first be reset.
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