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flashjazzcat

Member Since 23 Nov 2008
OFFLINE Last Active Today, 4:20 PM

#3890449 CONSOL ($D01F) on WUDSN (MADS/ALTIRRA)

Posted by flashjazzcat on Tue Nov 14, 2017 3:36 PM

OK. In that case, go to Input->Keyboard, and in the Keyboard Options dialog, make sure "Enable function keys" is unchecked.




#3890325 CONSOL ($D01F) on WUDSN (MADS/ALTIRRA)

Posted by flashjazzcat on Tue Nov 14, 2017 12:19 PM

Not when I'm trying to help by posting via my phone.

 

http://www.virtualdu...ence Manual.pdf

 

Page 269.




#3890243 CONSOL ($D01F) on WUDSN (MADS/ALTIRRA)

Posted by flashjazzcat on Tue Nov 14, 2017 10:37 AM

Write #$08 to CONSOL before reading it back.




#3888875 Incognito v2?

Posted by flashjazzcat on Sun Nov 12, 2017 6:54 AM

 

Hi.  What's this memory glitch?  Oh no!

 

The cartridge control area at $D5xx is "write-thru" and hits the IORAM (memory reserved for use by the BIOS and PBI HDD driver) which shares the same address space. This means - for instance - that SpartaDOS X can take a hard disk partition off-line simply by writing to its own cartridge banking register. The partial fix was to simply move critical data out of this RAM region, but but it's hardly ideal and other cartridge types have the potential to cause troubles. Told Candle about it many months ago but I haven't heard from him since March or thereabouts, so presumably there's no interest in fixing it.




#3888098 how many CPU cycles in a scanline?

Posted by flashjazzcat on Sat Nov 11, 2017 3:50 AM

Thanks for that rider.




#3888084 how many CPU cycles in a scanline?

Posted by flashjazzcat on Sat Nov 11, 2017 2:48 AM

Precisely. The cycle pictured is not stolen, but nor is it usable. We're talking about usable cycles, of which there appear to be 105 at most. :)




#3887561 Looks like a scam to me?

Posted by flashjazzcat on Fri Nov 10, 2017 12:26 PM

I just think that if you use the word "Methinks" or any variation thereof in a new topic, you've already lost the argument. :)




#3886770 New development: GTIA in CPLD

Posted by flashjazzcat on Thu Nov 9, 2017 8:33 AM

Did I miss something about Sophia outputting DVI?

 

http://atariage.com/...dpost&p=3772384




#3886728 how many CPU cycles in a scanline?

Posted by flashjazzcat on Thu Nov 9, 2017 6:53 AM

DRAM refresh still happens even if you disable DMA, and that consumes 9 cycles most of the time. I'm guessing that'll explain the uneven bar spacing too.




#3886386 Incognito v2?

Posted by flashjazzcat on Wed Nov 8, 2017 2:11 PM

Only been waiting eight months for my developer's prototype, but I'm starting to think it was never posted.




#3885705 The UAV Rev. D Video Upgrade Thread

Posted by flashjazzcat on Tue Nov 7, 2017 3:46 PM

Yeah. Think how amusing it will be if it turns out there are forum posts elsewhere on the Internet with imperfect grammar and we go and point them out. Sore ribs coming up! :)




#3885685 The UAV Rev. D Video Upgrade Thread

Posted by flashjazzcat on Tue Nov 7, 2017 3:06 PM

I think we can intuit from the rest of the sentence that it's a question.




#3885398 1088XEL Atari ITX Motherboard Pre-order & Interest Thread

Posted by flashjazzcat on Tue Nov 7, 2017 4:05 AM

Last video (fully annotated) for those interested in self-assembly:

 




#3884929 APT Hard Disk Preparation and Utilities

Posted by flashjazzcat on Mon Nov 6, 2017 12:27 PM

Pin says 4.48 fixes the problem, so the new version should appear on the next SDX ROMs where appropriate.


#3884911 Is Atarimax still in business?

Posted by flashjazzcat on Mon Nov 6, 2017 12:02 PM

So this means he does acknowledge orders by email after all? But he still gets a forum post regarding "the legal situation". LOL.