That's it!!! I was wondering about the extra socket on the board, and
the PROM option explains that nicely. Thanks!!!
Michael Holley wrote:
 Here is a page scan and the text from a 1978 PAiA catalog. The PVI appears
 to be Don Lancaster's TVT-6.
 
http://www.swtpc.com/mholley/PAiA/TVT6_640.jpg
 Michael Holley
 
www.swtpc.com/mholley
 Don Lancaster's ingenious design provides software controllable options
 including:
 Scrolling
 Over 2K on-screen characters with only 3MHz bandwidth
 Full performance cursor
 Variety of line/character formats including 16/32, 16/64 even 32/64
 User selectable line lengths
 You'll want to see the operational details on this first. The PVI-1K is not
 the universal answer to every video display requirement. In applications
 where its minor limitations present in?surmountable obstacles to a design,
 more expensive techniques should be used. If you are in doubt, the PVI is
 completely described in the July and August, 1977 issues of Popular
 Electronics. Reprints of these articles are the instruction set for this kit
 and are available separately for $2.00 postpaid refundable upon purchase of
 the PVI kit.
 Complete kit includes circuit board, all parts and instructions and is
 available in either of two forms.
 PVI-KM Ready to go with KIM's      $34.95      wt. 1 lb.
 PVI-MT For other processors
        (requires PROM coding)      $34.95      wt. 1 lb.
 > Date: Sun, 23 Nov 2003 19:33:15 -0800
 > From: Marvin Johnston <marvin(a)rain.org>
 > Subject: PAIA PVI-1, VT-103
 > To: ClassicCmp <cctalk(a)classiccmp.org>
 > Message-ID: <3FC17BFB.3D525A15(a)rain.org>
 > Content-Type: text/plain; charset=us-ascii
 >
 > I acquired a PAIA PVI-1 circuit board yesterday, and a Google search
 > brings up no information about this board. The main chip seems to be a
 > GI 2513 with some 8 7400 and CMOS support chips. On the circuit board
 > are two RCA jacks labeled TV and VID, two pots labeled "H POS V", a
 > jumper for selecting 32 or 64, and another YES or NO jumper for the
 > cursor. The code date on some of the chips are in the 1977 era. Does
 > anyone know what this thing is, and does anyone have any docs?
 >