OK, since you bought it up & I'm still learning the TI99 after being away from it for many years; briefly what is @ V0370 and what are you doing to fix it. Are you moving XB pointers or the screen pointers or am I completely off course?
Briefly and simply - 0370 is a memory address in hex notation and the V stands for VDP RAM, which is the internal console ram. It differs from CPU RAM (mostly external) and GRAM (mostly in modules).
Recommend you read from top to bottom of the READ THIS FIRST thread
There are a lot of links to Manuals and other media goodies on the forum at:
My personal list of useful websites would be:
a href="http://ftp.whtech.com/"is full of books, magazines, manuals, and programs (you have found this one!)
a href="http://www.hexbus.com/tibooks/" TI Books as PDF files (LOTS)
Ron Reuter's a href="http://www.mainbyte.com/ti99/" Mainbytes
Thierry Nouspikel's a href="http://www.unige.ch/...i99/titech.htm"Tech Pages</a>- serious stuff.
a href="https://www.ninerped...>Ninerpedia</a>is a principal resource for TI emulation with MAME, and also has lots of other info- registration is required to post, otherwise unrestricted.
a href="http://www.ti99iuc.i...one=2#">ti99iuchas some clean documenation to download, some disks to download (for emulators) and lots of information- like how to get composite video from a PAL console- it is in Italian, but there are translation engines, and you will quickly learn the important words...
a href="http://tigameshelf.net/"TI Gameshelf is less taxing, a collection of games in bin format for Mess and other emulators, or the FG99 module, and some disk files for emulators. No registration required
a href="http://www.99er.net/" 99er.net is not an easy site to find things on but there is plenty there. I mean PLENTY. Make sure to use the section "TI99 Database".
oops- not forgetting my own little offering at
a href="http://shawweb.myzen...stephen/TI.htm"which has well over a hundred pages of TI information.