Newport graphics - testers & input needed

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Hello,

there's a weirdness in the way the newport's VC2 chip generates the  
cursor sprite - depending on chip revision, board revision and FSM  
knows what else different values have to be added to the X coordinate.
The existing logic failed on my R5k Indy with 24bit Newport so I  
adapted it. The problem is, I have no idea if I broke anyone else's  
with this change.

So, if you have an Indy with 8bit or 24bit newport please post your  
board / chip revisions and the appropriate X offset for your hardware.  
I'll start with mine:

24bit Newport, board rev. 1, CMAP rev. 5, XMAP rev. 5, VC2 rev. 0,  
offset 29

besides that, I fixed a few bugs in the newport driver:
- - downwards scrolling now works
- - scrolls and fills no longer cover an extra line of character cells
So, text editors are now usable in the console.

have fun
Michael

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