User manual

Chapter 3: Software Installation - Multiuser DOS 3-9
Echo User's Manual, ver. 0.00
7. Provide all of the Port Details after assigning the port. Set the
Port and Port XOR Mask as per the chart below:
Table 4: Multiuser DOS: port details
PORT AND MASK XOR MASK STATUS PORT
P1 01 00 ***
P2 02 00 ***
P3 04 00 ***
P4 08 00 ***
P5 10 00 ***
P6 20 00 ***
P7 40 00 ***
P8 80 00 ***
Note:
*** The status port depends on the base port addresses
selected on DIP switch block SW1 of the Echo adapter
Many computers include both COM1 and COM2 directly on the
motherboard. The example shown below assumes that both of
these ports are standard equipment in your computer.
Example:
Figures 4 and 5 describe the DIP switch and jumper settings for
your Echo adapter in a system configured for:
1. A standard serial port at COM1, 3F8 hex, IRQ 4 and a
second standard serial port at COM2, 2F8, IRQ 3
2. An Echo adapter with its serial ports set at port addresses
280, 288, 290, 298, 2A0, 2A8, 2B0, 2B8 hex respectively and
its status port at 2C0 hex
3. All the Echo ports interrupt on channel A, IRQ 10
Please refer to Figures 1, 2, and 3 in Chapter 1: Introduction
for the location of switch block SW1 and jumper block J1.