EclaireXL

07/22/2017

09:06 PM Bug #56: Galaxian Cartridge crash

This works on the latest core I'm using (lets call it v15 - address decoder rework!) foft

09:04 PM Address decoding rewrite - tricky, tricky!

So I decided to rewrite the address decoding and priority access to fix the timing issues. Currently the 'address dec... foft

07/20/2017

10:06 PM Bug #56 (Closed): Galaxian Cartridge crash

i tried the physical 8k Galaxian cart on the Eclaire with Core v13 and the game crash 2sec into the demo screen
the ... ndary

07/19/2017

08:14 PM Feature #55 (New): Replace main CPU

I really find the stack based zpu annoying to debug. Also as its setup the rom is full.
Consider replacing with so... foft

07/17/2017

08:11 PM 917k's setup!

I'm sure you've already seen Steve's great setup, but if not go and see here. Very nice work:-)
http://atariage.com/... foft

07/15/2017

09:47 PM Bug #25: F10 Hard Reset Ignore inserted cartridge (Core v7)

This is the last thing remaining for V15. In order to do it (simply) I decided to allow off PBI access from turbo mod... foft

09:44 PM Bug #25 (In Progress): F10 Hard Reset Ignore inserted cartridge (Core v7)

foft

07/09/2017

01:25 PM Feature #24: A board with Atari SOUL!!!! (ROM in block ram support)

I'm using block ram in the FPGA for the OS ROM and BASIC. It can be read in 2 cycles and written to in 1 cycle. SDRAM... foft

07/07/2017

11:05 PM Feature #24: A board with Atari SOUL!!!! (ROM in block ram support)

??? What you mean here? sadosp

09:26 PM Feature #24: A board with Atari SOUL!!!! (ROM in block ram support)

Also of course nice and fast vs uncached sdram...
sysinfo fp test from 6x->20x :-) I probably need a cache to get... foft

09:13 PM Feature #2: PBI support

Added antic refresh cycles foft

07/06/2017

09:28 PM Feature #51: Debug port

I have a first cut of this building. This will be part of the v15 core.
Next I need to build the capture software ... foft

07/05/2017

09:41 PM Bug #49 (Closed): CORE13 - NTSC/PAL switching

foft

09:40 PM Bug #49: CORE13 - NTSC/PAL switching

Fixed, will be in v15 when I release it. foft

07/04/2017

09:31 PM Bug #49: CORE13 - NTSC/PAL switching

Trying to fix this one, but its nasty. I need more brain cycles to fix it... foft

09:29 PM Feature #14: Svideo core for first prototype

Hmm, just reading that IRE is _relative_ so that might be why increasing voltage didn't make anything brighter!!
h... foft

07/03/2017

06:42 AM Feature #14: Svideo core for first prototype

Stephen wrote:
> Hate to be a dunce - where is the documentation for cabling s-video from this board?
You can us... sadosp

12:31 AM Feature #14: Svideo core for first prototype

foft wrote:
> For anyone with composite/svideo setup. Please can you tell me what you think of svideo_gtia6.sof vs t... Stephen

07/02/2017

10:50 PM Feature #14: Svideo core for first prototype

For anyone with composite/svideo setup. Please can you tell me what you think of svideo_gtia6.sof vs the previous ver... foft

11:42 AM Feature #14: Svideo core for first prototype

I mean svideo and composite, it's the same thing pretty much.
I've got the gtia style one running pretty well for... foft

01:10 PM Bug #54: GTIA issue when Turbo > 4X

Yeah, this kind of test program is very helpful. Thanks. foft

05:54 AM Bug #54: GTIA issue when Turbo > 4X

Thanks Stephen!
sadosp

03:46 AM Bug #54 (Closed): GTIA issue when Turbo > 4X

I'm attaching a BASIC listing of a PMG test program I wrote to assist in diagnosing an issue with the 1088XEL. For f... Stephen

07/01/2017

06:43 PM Feature #14: Svideo core for first prototype

sadosp wrote:
> Maybe is time to think about implementing one external RGB -> composite/s-video converter, fit direc... Stephen

05:31 PM Feature #14: Svideo core for first prototype

Maybe is time to think about implementing one external RGB -> composite/s-video converter, fit directly to VGA output... sadosp

05:05 PM Feature #14: Svideo core for first prototype

That works, kind of! Basic screen and star wars shields look the correct colours, but I have no red. Also very grainy... foft

12:59 PM Feature #14: Svideo core for first prototype

Writing an 'atari-style' implementation instead of going via RGB. Fixed saturation, simple phase shift for colour. foft

07:10 AM Feature #14: Svideo core for first prototype

Interesting...
http://atariage.com/forums/topic/29621-atari-video-circuits-experiment/
So fixed saturation (exc... foft

03:59 PM Feature #53 (Closed): Add version number to settings

Add version number to settings foft

06/30/2017

11:30 PM Bug #52: Atari Control Picture

foft wrote:
> I checked an older core in case I introduced it with the antic timing changes for pbi. Was bad then, s... Stephen

10:15 PM Bug #52: Atari Control Picture

I checked an older core in case I introduced it with the antic timing changes for pbi. Was bad then, so unrelated.
... foft

10:10 PM Feature #14: Svideo core for first prototype

Added a poke 712,15 for comparison of max values. Interesting how the amplitude for basic 'blue' is so much higher ye... foft

09:54 PM Feature #14: Svideo core for first prototype

I mean see how the 'white' on ready already takes most of the range, without trying to increase it. foft

09:54 PM Feature #14: Svideo core for first prototype

Atari
!composite_atari_basic.png!
Eclaire
!composite_eclaire_basic.png!
We have a range of 0-1v on the DAC. 0... foft

09:50 PM Feature #14: Svideo core for first prototype

Added traces of Atari basic from the scope, to see the voltage level differences.
Eclaire is driving my monitor, A... foft

06/29/2017

11:30 PM Bug #52 (Closed): Atari Control Picture

CORE14, PAL & NTSC exhibit the same behaviour. When displaying the attached Atari Control Picture, the colour blocks... Stephen

08:59 PM Bug #49: CORE13 - NTSC/PAL switching

I think I've identified the problem. If the zpu happens to exit the menu at the end of an 'original' cycle the pbi lo... foft

06/27/2017

07:54 PM No news

No news, I've been ill but am almost better!
Is anyone still alive here?
On an unrelated note found this artic... foft