Boca Systems Complete IDE Series, Руководство пользователя

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PROBLEM: LPT2 will not perform a print screen (shift-PrtSc).
SOLUTION : The system is functioning normally. The print
screen function defaults to LPT1. If you wish to test the port
after installation copy an ASCII text file (NOTE: the example
may not exist on your boot disk) to an active device, i.e., COPY
AUTOEXEC.BAT LPT2 at the DOS prompt.
PROBLEM : COM3 and/or COM4 do not function (not initialized).
SOLUTION : The system is functioning normally. IBM never
intended COM3 or COM4 to be initialized during boot-up. (The
BIOS in some later systems may allow initializing of these ports;
check the system manual). Your application software will have
to initialize these COM ports. Consult the manual/publisher of
your application software to see if the software can address a
specific I/O port address such as 03E8h for COM3 or 02E8h for
COM4. An IRQ may or may not be required; you will have to
verify this.
PROBLEM : I am not sure how to set the COM ports.
SOLUTION : In general, IRQ4 belongs to COM1; IRQ3 belongs
to COM2. It is best to put an interrupt driven device on COM1
or 2 (i.e., a mouse) and put a non-interrupt driven device on
COM3 or 4 (i.e., a printer).
Troubleshooting