APPENDIX H
CONCURRENT DOS CONFIGURATION
MULTI - USER DOS CONFIGURATION

Set I/O port address to 2A0 and interrupt to IRQ3. To install device drivers,  please run the SETUP program, then follow the menu instructions to set up I/O port address, communication parameters (such as: baud rate, parity, data bits, ... etc.), and handshaking. The hardware configuration is shown below:

For multi-user DOS (Dr. DOS) configuration, please set I/O port address to 2A0H, any interrupt (IRQ3 to IRQ15) is used.