[Coco] vcc and WIDTH command when using HDB-DOS

[didier derny]

I've a strange problem

If I start VCC without the HDB-DOS ROM for drivewire

 

I can use the WIDTH 40 or WIDTH 80 command to change the width of the screen

 

When I started VCC with HDB-DOS rom for drivewire

 

If I attempt the commands WIDTH 40 or WIDTH 80

 

I get:

? SN ERROR

 

Is that normal ? I missed something

 

Thanks

 

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Didier