DIGITAL-LOGIC AG
MSMX104 Manual V1.3
19
6.1.5 COM[A-D] Address Configuration
Port Address
Available
J2
COM-Numbers on MSMX104
COM-Numbers on the CPU-Board
open
COM-A = 3E8 = COM3
COM-B = 2E8 = COM4
COM-C = 338 = COM5
COM-D = 238 = COM6
COM1, COM2
= total 6 COM
closed
COM-A = 380 = COM5
COM-B = 388 = COM6
COM-C = 390 = COM7
COM-D = 398 = COM8
COM1, COM2, COM3, COM4
= total 8 COM
The J3 is for future application reserved.
Port Address
Available
J3
Not used
Not used
1-2
Not used
2-3
Not used
Use the COM definition according to the used CPU-Board.
6x COM application:
With a 2 COM CPU- Board, use the J2 (open) selection. That means, after initializing, totally 6 COM’s are
available. The first 4 ports are supported by the BIOS and the COM5/6 are controlled by an operating-
specific driver. The interrupts must be definied according to the serial driver of the operating system, since
the BIOS uses the COM’s only in the polling-mode.
8x COM application:
With a 4 COM CPU- Board, use the J2 (closed) selection. That means, after initializing, totally 8 COM’s
are available. The first 4 ports are supported by the BIOS and the COM5 to 8 are controlled by a
operating- specific driver. The interrupts must be definied according to the serial driver of the operating
system, since the BIOS uses the COM’s only in the polling-mode.
