Taps for Topfield 5800 Files

***** Deepletterbox TAP for 4:3 TVs. *****

If you are watching a widescreen (16:9) program on a 4:3 TV, then you
normally only have a choice of two formats, depending on the AFD
value.

This TAP gives you the option of 3:
   1. 4:3 Center Cut-out
   2. 14:9 Compromise
   3. 16:9 Deep Letterbox

Change between them by using the '0' button. As with the other one,
you can unload the TAP by '0' followed by 'EXIT'.

This TAP performs better if the "[Af]" or "AFD_Disable" patch
is added to the firmware. See that page for instructions as to how to
do this.

Get it from http://www.toppy.org.uk/~r2-d2/patches.html#Af

The [Af] patch works independently of the TAPs, but together they
provide a better solution.

Now has menu for calibrating the 'shrink factor' and setting the
default mode, you will need the TSRCommander or TAPCommander TAPs to
get at this.

*** Problems: ***
    * This version works fully for firmwares up to 5.13.65, should
      also work with 14.02/6/7/8, some functionality for other
      firmwares.

    * If the AFD value is 10 (normally found on Channel 4), then the
      Toppy insists on Deep letterboxing and the TAP will not work
      unless you also install the "Af" Patch described above to
      suppress the Toppy's AFD handling.

    * Sometimes it loses track of the AFD state and you see an
      over-shrunk picture. You can fix this by pressing '0' a few
      times, or by changing channels back and forth, or by bringing up
      and closing one of the system menus.

    * Like the other TAP, this one will fight with the firmware over
      the aspect ratio.