Documentation for NETIO.ASM, MONITOR.ASM

MONITOR.ASM, used in conjunction with the device driver NETIO.ASM
will allow DOS console I/O calls to be transmitted across an IBM
PCNet local area network.  NETIO.ASM should be assembled with the
macro assembler and linked to create NETIO.SYS, and the line:

        DEVICE=NETIO.SYS

should be added to the AUTOEXEC.BAT file of the server.  After
booting the server, do a CTTY NETIO to pass console control to the
NETIO driver.  At this point, MONITOR.EXE can be run on another
machine on the network and a session established.

        To terminate the session, type a CTRL-A.  MONITOR will
respond with a NET> prompt.  If another CTRL-A is typed, a single
CTRL-A will be send to the server--receipt of any other character
will terminate the program, and NETIO will wait for another network
CALL.

        It is important to realize that this program will only work
if the application running on the server uses the standard DOS
console I/O calls.  Most applications programs available today,
however, prefer to use direct BIOS ROM calls or non-console function
calls (don't ask me why, the speed difference shouldn't be all that
noticeable).

        Here's what I mean--the following are patches to MS-KERMIT so
that it can be run on the server:

        To MSKERMIT.INI>> set heath19 off
        To MSYIBM.ASM
>>
chkinp: mov     dl,0ffh
        mov     ah,06h
        int     dos
        jz      lp
        cmp     al,chesc
        je      quit
        call    outprt
        jmp     chkinp
>>
<<
chkinp: mov     ah,1
        int     kb
        jz      lp                      ; nothing available...
        xor     ah,ah
        int     kb                      ; get the char from the buffer
        push    ax                      ; save character temporarily
        call    gss                     ; get shift state into al
        mov     bl,al                   ; save shift state
        pop     ax

        cmp     al,esc_ch               ; escape character?
        je      quit                    ; yes, stop here

        call    trnout                  ; translate if nec., output to prt
        jmp     chkinp                  ; and keep going
<<
        If you have any problems, questions, or comments, send mail to
DESILVA @ NBS-VMS.ARPA.  None of this stuff has been extensively tested,
so use it at your own risk.