Prevue (ESQ)
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The Prevue "Blue" grid is a computer system for Prevue/TV Guide to list the TV Guide. Like it's predecessors, it featured ads, the date, and the time. It was indeed a step up from the EPG Sr. More configuration options and more flexible with cable system operators (Basically, more configuration options). This specific system version was the first to allow video go through the unit with the genlock card. This grid version ran on the Amiga platform. It did it's job well.
Various Functions
The 9.0.4 system software was indeed very interesting, especially in it's functions. It allowed background colors in the ads, and it allowed the font colors to be changed, too. However, in emulated versions, it is not practical to get the ads to be shown... yet.
The 9.0.4 system software also made it easy to change the serial number, as seen with my custom "CJ1996" serial number. To do this, you will need to type the following...
Strike Control C while in the main system menu. You then will be dumped to a command shell. enter in sel (your new serial here) then press enter, and reset the machine.