@echo off
>pcbview.txt
if %@ext[%1] == gif goto gif
if %@ext[%1] == zip goto zip
goto end

rem -- It would be really nice if CDC would pass the com port number
rem -- on the command line to PCBVIEW.BAT and PCBTEST.BAT, but until
rem -- they do, you need to put the correct port number after the /P:x
rem -- parameter.
:gif
giftest %1 /p:1
goto end

:zip
ziptv -p1 %1
goto end

:end