Bingo !!
I knew I was doing something wrong. (stupid really)
It was simply a matter of putting
tm instead of
-tm.zip after the .exe
@echo off
cls
cd C:\MAME128
start /min mame.exe tmChad ... I was trying to use the /min to minimize the DOS prompt window.
It only blinks for a second, but still a bit noticable.
Once the .exe and rom are called it maximizes the game itself just fine.
daywane ... I'll make note of that thread. I didn't find it inmy searches.