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flashjazzcat

Member Since 23 Nov 2008
OFFLINE Last Active Today, 5:35 PM

#4199363 a few U1MB OS related questions

Posted by flashjazzcat on Today, 8:09 AM

2.  Is there a "Reverse BASIC" XL OS ROM floating around than can be used in the U1MB like the one that can be found in the AtariMax 32-in-1?  Asking for a friend.


Not really required with the current firmware, since if you enable the PBI BIOS (regardless of whether you have the HDD or high-speed SIO driver turned on), you can set 'BASIC default' to 'Disabled' on the 'Memory and System ROMs' menu.
 

3.  Relatedly, can BASIC simply be switched off on the U1MB or can a slot be left empty so that there is no built-in BASIC at all?  Or do I need to set my machine to OSb in order to do this?


See above. You could also probably make a BASIC ROM which simply sets a few OS variables and then disables itself by writing to PORTB via a few bytes of code copied to RAM.
 

4.  Does anyone have a NTSC compliant OSa ROM that has been padded out to 16K that they could share?


Try this:

Attached File  OS-A-NTSC-16K.zip   7.92KB   5 downloads


#4198808 classic battle atari 8bit vs commodore 64

Posted by flashjazzcat on Yesterday, 1:52 PM

Thought you should all know.


Have you let the author of the program know?


#4198772 classic battle atari 8bit vs commodore 64

Posted by flashjazzcat on Yesterday, 1:22 PM

Is that a stand-alone program anyone with SpartaDOS X can use, or is it something that only works with Incognito/Ultimate 1M?

 

It works in any environment. Download here:

 

http://drac030.krap.pl/en-si-pliki.php




#4197910 classic battle atari 8bit vs commodore 64

Posted by flashjazzcat on Tue Jan 15, 2019 10:00 AM

About 106 Kbytes/sec on both my Atari 800 & XLs (on PBI/HD partition)...


Which test yields the figures you're observing?


#4197494 classic battle atari 8bit vs commodore 64

Posted by flashjazzcat on Mon Jan 14, 2019 3:55 PM

Yes. I wasn't looking for some dictionary definition for modern slang or colloquial English (Webster means little to me anymore, especially with slang).

 

You'd better not look at the urban dictionary definition, then. :)




#4196246 Atari Cart + ECI bus Memory Expansion ideas...

Posted by flashjazzcat on Sat Jan 12, 2019 5:30 PM

EXACTLY! Right on the money, there: away from $D5XX range.

But I will still wonder about compatibility with past and present SW that relies / addresses extended memory, though...


Ideally, have some RAM accessible via PORTB and other RAM accessible via a different address. This way, software can make full use of PORTB RAM in the usual fashion without destroying the contents of the protected RAM (RAMdisk, fancy custom OS, ANTIC display buffer, etc).

As mentioned: if the device adheres to the PBI protocol, the possibility of conflicts with other hardware is greatly reduced (special RAM could be accessible only when the PBI device is selected).


#4196141 Atari Cart + ECI bus Memory Expansion ideas...

Posted by flashjazzcat on Sat Jan 12, 2019 1:45 PM

Would it not be preferable to keep the control register away from CCTL since this is a PBI device anyway? You could place it anywhere (say - higher up in the PIA address range or in $D1xx) and it would not interfere with cartridge banking control (some carts use the entire $D5xx range).




#4195272 On eBay, Atari 8-bit People are just more honest than PC People

Posted by flashjazzcat on Fri Jan 11, 2019 7:20 AM

You could implement something along the lines of Google Translate which accepts the listing description as input and outputs what it actually means. :)




#4193199 Secretum Labyrinth Dark Castle teaser video

Posted by flashjazzcat on Tue Jan 8, 2019 10:30 AM

Too many cooks by the sound of it.

 

Plus: distribution on cartridge is no serious impediment to duplication these days, as exhaustively pointed out already. The only thing it (along with various other factors, including the marketing strategy and the attitude towards the potential customer base) impedes is people's desire to purchase the product.




#4193180 800XL RF module removal

Posted by flashjazzcat on Tue Jan 8, 2019 10:13 AM

Video in case it's useful:

 




#4193176 classic battle atari 8bit vs commodore 64

Posted by flashjazzcat on Tue Jan 8, 2019 10:12 AM

I say Super IRG method works great on getting more screen colors on the Atari, The method of swapping between two character set in each TV frame.


It seems to me that interlace modes have a detrimental effect on colour saturation and luminosity, and that's quite apart from the flickering exhibited on PAL systems. Interlaced modes are great for displaying photographic images with high colour depth, but Super IRG looks muted to me. I prefer to see bright, solid colours on the A8. I'm not a gamer, but Crownland is an excellent example which springs to mind.




#4193166 Secretum Labyrinth Dark Castle teaser video

Posted by flashjazzcat on Tue Jan 8, 2019 9:58 AM

Two years ago, someone going by "Bobby75" posted the Atari 5200 version of Venture on the 5200 section and I had to make a request to take it down.


Here's the thread:

http://atariage.com/...8-venture-5200/

Account responsible was banned after one post. I have to wonder how you (and Video61) apparently ended up entrusting your work to such unscrupulous people. I also think that using a particular distribution media as an anti-piracy device and proclaiming said media to be resistant to duplication is probably an effective way of ensuring that someone attempts to crack it. If I uploaded something here (even for free) with copy-protection which I asserted was unbreakable, and even if breaking said copy protection resulted in no material gain whatsoever for the assailant, I would expect the copy protection to be overcome within twenty-four hours or so, just for the sake of it. :)




#4192676 Altirra 3.10 released

Posted by flashjazzcat on Mon Jan 7, 2019 4:11 PM

I was thinking (since it has been suggested) of doing a video on setting up Altirra with U1MB, and since I already host the firmware files at atari8.co.uk, I'd be more than happy to put together some ready-to-run hard disk images as well.




#4192439 Secretum Labyrinth Dark Castle teaser video

Posted by flashjazzcat on Mon Jan 7, 2019 10:10 AM

I keep being asked to let more people beta test, but when I ask to continue the conversation in private, I state they need to contact Video61, provide identification, and sign a non-disclosure. I never hear from them again, that tells me they may not be trustworthy.


My guess is that if that's true, the people in question are just thinking 'f*** this' when faced with that much palaver after offering to help you. In my experience, interactions with other members of the community are almost invariably conducted purely on the basis of trust. Over time, one learns to identify those of good character and reputation, and they comprise the vast majority of the community. These are the same individuals who are usually the first to offer genuine help, and I imagine that when doubt is immediately cast on their integrity, they realise their time would be better invested elsewhere.

I have no doubt that there are a few bad apples out there (indeed I know this for sure), but those genuine individuals of known good character who offer help do not deserve to be presumed dishonest, IMO. And regardless of whether money and intellectual property is at stake, I don't think the stakes are high enough in the 8-bit Atari world to warrant all the paranoia, techno-babble and corporate jargon. There have been many projects operated by private individuals on this forum with considerable up-front costs (pre-orders, etc) which would doubtless have been ruined by such a hostile attitude. As ye sow, etc.


#4192357 Secretum Labyrinth Dark Castle teaser video

Posted by flashjazzcat on Mon Jan 7, 2019 6:15 AM

Let's keep everything positive and not talk about trying to get free copy of this game.


Wow. What an obnoxious and self-aggrandising response.