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Forums > CSDb Entries > Release id #201894 : Borderpolizei
2021-03-24 19:00
chatGPZ

Registered: Dec 2001
Posts: 11499
Release id #201894 : Borderpolizei

So, quoting Krill:
Quote:
Finally someone made this! =)


It would be really cool if some of you would take their time and read the .pdf, and then provide your results.

Especially interesting would be results from high quality CRT TV sets that can be trusted to be properly factory calibrated. Even more interesting if someone around here is qualified to do this himself (and has the equipment). Speak up! :)
 
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2021-03-25 19:47
chatGPZ

Registered: Dec 2001
Posts: 11499
Oh well, thanks :) I wonder if correctly calibrated CRTs even exist at this time :=)
2021-03-26 21:44
Mr. SID

Registered: Jan 2003
Posts: 425
This is really hard to do. I have a Sony PVM 14L4, which was last calibrated professionally in 2014. There is no user-accessible way to adjust the geometry (and I'm not going to open it, it's sealed). The C64 image is not perfectly centered. I assume that to be the correct way.

The visible part of the Trinitron tube is essentially rectangular, so the difference between the two lines is minimal:
http://galway.c64.org/~sid/borderpolizei.jpeg
2021-03-26 21:48
chatGPZ

Registered: Dec 2001
Posts: 11499
the vertical "non centering" actually looks spot on - it should be 8 pixels more on the left than on the right. Thanks!
2021-03-27 06:18
Krill

Registered: Apr 2002
Posts: 3070
Quoting Groepaz
the vertical "non centering" actually looks spot on - it should be 8 pixels more on the left than on the right.
Hmm, but only if pretty much "everything" is shown horizontally. As in, when the right border isn't cropped like in the screenshot, i guess. =)

Can't properly read the right-border numbers there, will the next version come without compliance to borderline compo restrictions?
2021-03-27 11:35
Copyfault

Registered: Dec 2001
Posts: 483
Quoting Krill
Quoting Groepaz
the vertical "non centering" actually looks spot on - it should be 8 pixels more on the left than on the right.
Hmm, but only if pretty much "everything" is shown horizontally. As in, when the right border isn't cropped like in the screenshot, i guess. =)

Can't properly read the right-border numbers there, will the next version come without compliance to borderline compo restrictions?
Alternatively we could choose an alternative font, but the point *is* taken;)

Frankly spoken, this is the first time I ever saw a c64 output with such a narrow right sideborder!


Thanks to everyone for doing measurements! Means a lot to us :)
2021-03-27 13:31
chatGPZ

Registered: Dec 2001
Posts: 11499
Quote:
Hmm, but only if pretty much "everything" is shown horizontally. As in, when the right border isn't cropped like in the screenshot, i guess. =)

nope. its exactly what happens when you use a C64 at a properly calibrated TV set - 8 pixels more in left border than in right border.
2021-03-27 13:41
Krill

Registered: Apr 2002
Posts: 3070
Quoting Groepaz
nope. its exactly what happens when you use a C64 at a properly calibrated TV set - 8 pixels more in left border than in right border.
Properly calibrated for TV, improperly calibrated for C-64, then. =)
2021-03-27 13:52
chatGPZ

Registered: Dec 2001
Posts: 11499
ab ins Eck!
2021-03-28 18:38
Frantic

Registered: Mar 2003
Posts: 1651
Some old Amiga monitor.
Type 1081
Made in Taiwan
Nr. 15723052981

This type:
https://bigbookofamigahardware.com/bboah/product.aspx?id=847

Upper left:
013 019
 29  23

Upper right:
178
 33
17B
 36

Lower left:
1EB
 37
1F0
 32

Lower right:
133  129
 44   50


Hope I did this correctly.
2021-03-28 19:33
Thunder.Bird

Registered: Nov 2003
Posts: 111
I also wondered if I should post my screens absolute maximums. I decided to write them down locally.
So I'm able in time to post them if necessary or take that as a personal reference.
So I could (if really necessary!) adjust my screens at the particular time, you coders are doing crazy things again.
But for motivational issues I'll post them nevertheless, now and here! NARF

(type, manufacturer, name - outer/inner max top/bottom/left/right dec) ...this should go into standarized database
CRT | Sony | Trinitron BVM (15“) | 27/21|49/43|31/29|29/25
Beamer | Sanyo | Z2 | 28/27|47/46|36/35|35/34

now go, do crazy stuff :P
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