abaco systems CEI-520 - CEI-420;420 A Base Memory Address; CEI-420;420 A Interrupts and Slew Rate; CEI-420;420 A Power; Table 19. Mapping of Switch Positions to Address Bits

Installation Configuring the CEI-420 and CEI-420A
CEI-100/CEI-200/CEI-x20 User’s Manual 26
CEI-420/420A Base Memory Address
Jumpers A19-A12 on header E1 set the base memory address. An
installed jumper selects that address bit as ‘0’. The following table
demonstrates the mapping of switch positions to address bits. It uses the
default address of D000 (hex) as an example. The CEI-420 takes up 4Kb
(i.e., 1000 Hex) of upper memory block memory space.
Table 19. Mapping of Switch Positions to Address Bits
Jumper Position
A19
A18
A17
A16
A15
A14
A13
A12
Address Bit
19
18
17
16
15
14
13
12
Jumper Setting
Off
Off
On
Off
On
On
On
On
Base Address
1
1
0
1
0
0
0
0
Hex Value
D
0
Other sample settings for jumpers A19 through A12 respectively generate
the following base memory addresses:
D800 = Off Off On Off Off On On On
E000 = Off Off Off On On On On On
CEI-420/420A Interrupts and Slew Rate
The interrupts are software-controlled. See chapter 5, “Program Interface
Library“, for information on selecting interrupts.
The slew rate is automatically controlled as a function of the selected bit
rate.
CEI-420/420A Power
For proper operation, the CEI-420/420A requires +12V, -12V and +5V
power supplied via the PC/104 connector. The board will not function
properly if any of these required voltages are not available.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com