Zerosquare
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Posts posted by Zerosquare
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perhapps it was tested by atari but banned & forbidden to be use by licensed games... we never knowThat's likely, considering the fact that you need to modify the VP register for interlacing to work, and this quote from the Jag's Release Notes (see the attached picture).
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There are several points to consider :
1) Processors usage is not a problem since the Object Processor is the one doing the hard work.
2) Interlacing does not require additional resources per se (although there are twice as many lines to display, they are refreshed half as often).
3) Higher horizontal resolutions use more bandwidth on the internal bus ; it can slow other things down.
4) Large pictures need a lot of ROM to store them, and a lot of RAM to display then (it's less of a problem with SCPCD's JagCF card).
I've not done any benchmarking yet, but my feeling is that 1376x576 would be only interesting for still pictures (there are limitations on sprites in this mode anyways), and that 688x576 would still be interesting for general use (but don't quote me on that
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I've posted new versions which should work for both 50 Hz (green power LED) and 60 Hz (red power LED) Jaguars ; you can find them here.
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(A screenshot is needed for people who cannot see the code.)Here we go
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Again, thanks for the positive feedback. I'm still polishing the code, and planning to add a 60 Hz version ; details on how to setup the modes will be released publicly.
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Thanks for the comments, everyone
Don't forget to try out the 1376x576 version also (different picture)
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Since I have an RGB to component transcoder, and Atari Jaguar RGB cables are pretty much non-existant in the US, I installed a DB9 connector on my Jaguar to go to my RGB transcoder.I know the pinout of the AV port on the back, but I do not want to use that for tapping the RGB, composite video, and audio lines as it would render the port useless for stock cables. On the back of the jag, behind the ports, there's a large row of resistors; I assume these would be where I would tap the video and sound, but I do not know which ones I need to tap.
Does anyone have any experience with RGB modding their Jag? Thanks!
You can find the Jaguar's schematic on Matthias Domin's Atari Jaguar page.
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You're welcome
A few clarifications :
- An AC adapter, when measured in DC, will usually read zero (or a very small voltage).
- A DC adapter, when measured in AC, may read zero or any value, usually different from the DC one ; it depends on the meter (for the technically minded : whether it uses AC coupling, True RMS, etc.)
- Those adapters have usually no real regulation ; the voltage written on them is the one they put out approximately when connected to a load drawing the current they're rated for (e.g. 800 mA) ; without a load (such as when you're measuring them with a meter), the voltage may be 20% higher, or more.
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Hey, you almost found the solution yourself
Measuring AC with a multimeter set to DC (which I assume is what you're doing) will indeed result in a zero volts reading. Depending on the multimeter you're using, there should either a switch position marked V(olts) AC (sometimes this is the drawing of a sine wave), or a button to press to select AC mode, which will give you proper readings.
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how do i make it english?I'm not sure I'm understanding your question correctly, but anyways : you can't actually "choose" English. We try to write the most relevant posts in both languages, and there are also forums in which everything is in English (here)
If you'd like to take a peek at the non-translated sections, try WorldLingo Web Translation and submit http://www.jagware.org/index.php?act=idx
(Tip : clicking on the "Lo-Fi" link at the bottom of the page will speed up browsing). The translation is not really brilliant (it chokes on colloquialisms and misspellings, and has trouble with homonyms), but you should at least get a grasp of what is being discussed.
Also note that the service attempts to translate everything, so contents which are already in English will become hopelessly garbled.
In any case, feel free to contact us either here or on Jagware if you need any clarification or info.
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For those who have problems with the Windows BJL uploader : I made a modified version which seems to work better for some people. Check it out here (click on the file icon at the end of the post to download).
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Are you referring to the encrypted BJL CD I released? I wasn't aware there was another one out there.FrediFredo's CD is not the same as yours ; it's a PC (not JagCD) CD-ROM he made for homebrew developers, containing documentation, programs, etc. related to Jaguar programming.
EDIT : Just took a look at the Jaguar Developers Tools you have for download. Seems to be very interesting
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You should send a PM to Fredifredo ; he managed to get the BJL uploader working under Windows XP, he'll probably be able to help you.
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Yes, it's a modded Jag with the BJL ROM (or one with the Protector SE cartridge).
But you can also try out SebRmv's game on Project Tempest, it works fine
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Hi everybody.
I'm Zerosquare, SCPCD's assistant on the JagCFv2 project (and Jagware member), and it's my first post on AA.
As you may have noticed, GT Turbo is sometimes a little bit overenthusiastic in the PR department.
Those who argue that we should support running existing games on a Compact Flash do have a point, and I don't doubt most people in the Jaguar community are honest and would not use the adaptator to pirate games. It's not really an hardware problem either : I think implementing cartridge emulation would not require excessive work (CD emulation is another matter, as said before). The real problem is that we want support from developers, and we probably won't get any if we release a product which can be potentially used as a piracy aid. Yes, someone said before that the market for the Jaguar was more-or-less dead, but just take a look at the prices for BattleSphere Gold on Ebay... or remember the recent licensing mess about Gorf...
doctorlu, you said your games were failing. I'm a newcomer to the Jag, but cartridge technology is generally pretty robust, electronically speaking. Are your cartridges and your Jag's port clean ? (Hardware specialists are welcome to comment.)
It's also true that the Compact Flash is yet another format. But the points to remember is that it's relatively cheap, high capacity, that homebrew productions can easily be distributed over the Internet (all you'll have to do is plug the CF card into your computer, copy the files on it, and put it back into the JagCF adaptator), it's fully rewrittable (no more EEPROM trouble), and that the JagCF (with all its bells and whistles) will allow developers to do much, much more than what can be done either with a plain Jaguar or the JagCD.
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USB Jag communication cable : help us find a name
in Atari Jaguar
Posted · Edited by Zerosquare
Hi everyone,
We're looking for a new name for our USB communication cable (click here for more info).
It's currently known as the "JagWire", but some people feel it will create confusion because of the former Atari website with the same name, and cobracon's site.
So if you've got a cool name to suggest, go ahead and post it here !
(Note for those who are not registered members on this site : the same topic has also been posted on Jagware and Yaronet).
-- Zerosquare (Jagware)