B&B Electronics ESCLP-100 - Manual - Manual (Page 9)

port Starting port number, 1 or 2 decimal digits
The first port on the adapter. The other ports on the adapter follow in contiguous sequence. For
example, to install a Quatech QS-100 four-port adapter for COM9 through COM12, use "9" or "09".
io Base I/O address, 3 or 4 hex digits
The base I/O address of the starting port. The value must match the adapter's address DIP switch
settings. The other ports on the adapter reside at increments of eight bytes in contiguous I/O space
following the first port.
irq Interrupt (IRQ) level, 1 or 2 decimal digits
The hardware interrupt level (2-15) used by all ports on the adapter.
flags Option flags (OPTIONAL --- Use only if needed)
Flags may be placed in any order, separated by commas. Some are mutually exclusive, in which case
the right-most flag will be the one used.
Consecutive spurious interrupt control (mutually exclusive):
"D" = Disable port after 1000 (default), "I" = Ignore, "P" = Post to application
UART selection override control (mutually exclusive):
"F5" = Limit to 16550 mode (16-byte FIFOs)
"F4" = Limit to 16450 mode (no FIFOs)
The driver defaults to 16450 mode and automatically detects a 16550 or 16750 if present. The
override should be used only if the user wishes to limit the FIFO size.
Example: (ES,17,320,3)
A Quatech ES-xxx eight-port non-intelligent adapter providing COM17 through COM24
is installed at base address 320 hex using IRQ3. The eight ports will be located at base addresses
320, 328, 330, 338, 340, 348, 350 and 358 hex.
Quatech Asynchronous Serial Device Driver for OS/2 6