Assembly Summer oldskool compo rules
category: parties [glöplog]
I've tested with flatscreens, but I'm thinking if it would look stretched on a CRT. Modern displays do all sorts of "intelligent" stuff. By the way, Dosbox doesn't seem to care about the timing registers, it's just 70 fps.
Quote:
By the way, is anyone interested in testing a 60 Hz VGA mode 13h? I've made a set of CRTC register settings that creates a 60 Hz 320x200 mode without doing any "un-chain-four" stuff, but I don't have a CRT monitor to test it with. You have to be a bit adventurous because messing around with CRTC settings might break your monitor.
it is not the same mode which I used in blash? :)
Code:
void set60hz() {
// again thanks to type one for info ;)
outp (0x3D4, 0x11); outp(0x3D5, (inp(0x3D5) & 0x7F)); // unlock registers
outp (0x3C2, 0xE3); // misc. output
outpw(0x3D4, 0x0B06); // vertical total
outpw(0x3D4, 0x3E07); // overflow
outpw(0x3D4, 0xC310); // vertical start retrace
outpw(0x3D4, 0x8C11); // vertical end retrace
outpw(0x3D4, 0x8F12); // vertical display enable end
outpw(0x3D4, 0x9015); // vertical blank start
outpw(0x3D4, 0x0B16); // vertical blank end
}It uses regular mode 13h memory model and does work with LCD monitors as well.
and it uses vertical timings form 640x480 mode so I think it will look letterboxed (not stretched) on both CRTs and LCDs. The only drawback is when using color (not black) overscan some LCDs will tint the whole screeen a bit.
My timings are based on the ones I found here. Should have 15 kHz horizontal rate. :)
http://www.vintage-computer.com/vcforum/archive/index.php/t-41021.html
But that one actually gave me 120 fps, so I made some changes to get 60 fps. And I'm at least trying to turn off sync output while the registers are only partially set, to protect a hypothetical CRT.
http://www.vintage-computer.com/vcforum/archive/index.php/t-41021.html
But that one actually gave me 120 fps, so I made some changes to get 60 fps. And I'm at least trying to turn off sync output while the registers are only partially set, to protect a hypothetical CRT.
ah, ok, my mode uses 31khz horizontal and 60hz vertial rates so it's fully VGA compatible, but I will not recommend to use ONLY 15khz mode, add 31khz one also! :)
You're probably right. Many VGA monitors wouldn't sync to 15 kHz anyway. I just thought it would be a nice mode, someone might be able to use it with a regular video monitor... But nevermind.
I just hope nobody makes 70 Hz demos anymore, because it will look like crap everywhere. For Assembly TV stream viewers, Youtube, most probably at the partyplace as well.
I just hope nobody makes 70 Hz demos anymore, because it will look like crap everywhere. For Assembly TV stream viewers, Youtube, most probably at the partyplace as well.
I vote for option number 2.
There are still many months left before the party starts, but when the voting ends?
@mayday: Today. As stated on first page, first post.
@ham: Thanks, I must be blind.. :D
1. + Atari ST, Amiga 500, 286+Adlib or maybe SB.
or 3. but up to 1987, not 1992.
or 3. but up to 1987, not 1992.
@yzi: I have both a really high quality CRT and a VGA LCD that can sync to 15kHz connected to a DOS PC. Shoot me your vmode and I'll give it a try for you!
Email my pouet username @ uvic.ca
Email my pouet username @ uvic.ca
2
Voting has already ended.
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Only votes in this thread will be counted and you have until and including 2016-02-15 to vote. To clarify: votes posted on 2016-02-16 will not be counted.
branch: it's still 15.2 ;)
2
tho not going to contribute anything to the compo
tho not going to contribute anything to the compo
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branch: it's still 15.2 ;)
im an idiot.
2 (and what sm said ;-)
2
666
And the votes have been counted, thanks for the good discussion everyone!
Option 1: 2
Option 2: 28
Option 3: 19
So we'll go with the Pentium, the Amiga and the Falcon. Gentlemen, start your demomakers, and see you at ASM!
We will publish the fully accurate compo machine specs and entry max size a bit later, once we have dug into our hardware stashes.
Please note that you don't have to target the absolute maximum hardware in the compo, you will make a lot of home enthusiasts happy if your demo doesn't require an overclocked 060. :-)
Option 1: 2
Option 2: 28
Option 3: 19
So we'll go with the Pentium, the Amiga and the Falcon. Gentlemen, start your demomakers, and see you at ASM!
We will publish the fully accurate compo machine specs and entry max size a bit later, once we have dug into our hardware stashes.
Please note that you don't have to target the absolute maximum hardware in the compo, you will make a lot of home enthusiasts happy if your demo doesn't require an overclocked 060. :-)
4
0
Does the rules allow usage of Microsoft Windows 95?
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Does the rules allow usage of Microsoft Windows 95?
The compo machine will only have DOS on it.