Chilly Willy wrote:TVs now have several stretched modes in addition to black bars.
You always can configure mad aspect, but I'm interesting in aspect "what meant to be".
Chilly Willy wrote:By making the line half as long, it resets to the middle at the top instead of the top left corner. Without the half line, the vertical deflection is ALWAYS to the top left, so no interlace.
Half line long in horizontal? Top middle in horizontal? If it is, then I don't belive. Let's call lines as in Wikipedia, then interlaced {2,4,6...524,1,3,5,...525} full cycle. And MD force {2,4,6,...,524,2,4,...524...} forcely resync to first field?
Chilly Willy wrote:That's why many didn't bother - they simply assume interlaced regardless of the signal.
If they assume interlaced then
2->2
4->4
...
524->524
2->1
4->3
...
524->523
2->525 (?????? or there will be just sync to 2?)
4->2
6->4
If not sync (skip) at 525 line, then whole screen will roll.
It doesn't really matter for me, I'm just curious
Matters for me only that both fields on same lines.
Eke wrote:How these signals are then encoded does not really matter, pixels do not exist anymore, only voltage variations and SYNC signals.
I didn't see "then".
I mean VDP->TV->Display
TV->display = same always.
but VDP->TV does really matter, and there stretching occurs.
Well, I restate in a different way:
Is that true, that 320x224 showed by TV with pixel ratio 1:1?
If not, then how?
And ratio of borders?
For example, if 320x224 (
with borders) showed by TV with pixel ratio 1:1,
and 256x225 (
without borders) showed by TV with such pixel ratio that stretched to 320x224(
without borders) screen with 1:1 ratio i.e. 1.25:1, then if borders showed with same 1.25:1 pixel ratio,
then whole display would be bigger than for 320x224.
Simple calculations: (13 + 256 + 14)*1.25 = 353.75 > 347 = (13 + 320 + 14)*1
If it fits with borders, then aspect can be 1.226:1
(13 + 256 + 14)*1.226 = 346.958