Date   : Sun, 29 Jan 1984 13:27:00 EST
From   : SJOBRG%MIT-OZ@MIT-MC.ARPA
Subject: Heath/Zenith Z-100 extended video

The November 1983 issue of Microsystems magazine carries a review of the
Zenith Z-100 computer system.  The review states:

    The video board allows an alternate display format, which
    could be used to provide an interlaced display of 640 by
    525 pixels, but no information is provided on specific
    programming for that purpose.  (p. 100)

I have often lamented the fact that many video displays (such as the IBM
PC) only go up to 400 lines vertically when 480 would have permitted a
square aspect ratio (so important when dealing with digitized images as
I often do).  Does anyone have any information about this capability in
the Zenith machine?  Thanks.