Here are my DOS SESSION SETTING for PCBoard

The 3 setting below that start with COM only show up when using the
OS/2 DEFAULT COM DRIVERS.

COM_DIRECT_ACCESS               ON
COM_RECIEVE_FLUSH_BUFFER        NONE
COM_SELECT                      ALL  (OR select for which ever COM port
                                     is being used for this DOS SESSION)

DOS_AUTOEXEC.BAT
DOS_EXECUTION_BACKGROUND        ON
DOS BREAK                       OFF
DOS_DEVICE
DOS_FCBS                        16
DOS_FCBS_KEEP                    8
DOS_FILES                       30 (this is in addition to the FILE
                                    Statement in the config.sys file,
                                    adjust to suit your own
                                    requirements)
DOS_HIGH                        ON
DOS_LASTDRIVE                    Z
DOS_RMSIZE                     640
DOS_SHELL
DOS_STARTUP_DRIVE
DOS_UMB                         OFF
DOS_VERSION                        (Add programs here as needed)
DPMI_DOS_API                    DISABLED
DPMI_MEMORY_LIMIT                4
DPMI_NETWORK_BUFF_SIZE           8
EMS_FRAME_LOCATION               AUTO
EMS_HIGH_OS_MAP_REGION           0
EMS_LOW_OS_MAP_REGION           384
EMS_MEMORY_LIMIT                512
HW_NOSOUND                      OFF
HW_ROM_TO_RAM                   OFF
HW_TIMER                        OFF
IDLE_SECONDS                     0

IDLE_SENSITIVITY                55
(Used with TAME310 and OS2Speed)

KBD_BUFFER_EXTEND               ON
KBD_CTRL_BYPASS                 NONE
KBD_RATE_LOCK                   OFF
MEM_EXCLUDE_REGION
MEM_INCLUDE_REGION
MOUSE_EXCLUSIVE_ACCESS          OFF
PRINT_SEPERATE_OUTPUT           OFF
PRINT_TIMEOUT                   15

These 7 lines below will only show up if you are using the SIO/VSIO
drivers in your config.sys.

SIO_ALLOW_ACCESS COM1  --|
SIO_ALLOW_ACCESS COM2  --| <----------> I have only the com port in use
SIO_ALLOW_ACCESS COM2  --|              set to YES, the others set to NO.
SIO_ALLOW_ACCESS COM4  --|
SIO_VIRTUALIZE_16550A           ON
SIO_VIRTUALIZE_COM_PORTS        ON
SIO_VIRTUALIZE_RTS_is_HS        ON

VIDEO_8514A_XGA_IOTRAP          OFF
VIDEO_FASTPASTE                 OFF
VIDEO_MODE_RESTRICTION          NONE
VIDEO_ONDEMAND_MEMORY           OFF
VIDEO_RETRACE_EMULATION         OFF
VIDEO_ROM_EMULATION             OFF
VIDEO_SWITCH_NOTIFICATION       OFF
VIDEO_WINDOW_REFRESH             1
XMS_HANDLES                      32
XMS_MEMORY_LIMIT                 0   (Remember in the PCB.BLT is says to
XMS_MEMORY_LIMIT                      use NO XMS)