EclaireXL

10/13/2018

09:44 PM Revision 800 (repo2): Some handy palette stuff

markw

09:41 PM Revision 799 (repo2): EclaireXL has diverged a lot, use this for other platforms for now!

markw

09:35 PM Revision 798 (repo2): Turn off some 5200 stuff when not in 5200 mode. Remove unused function.

markw

08:57 PM Feature #76: Merge down to trunk

Easy part done, merged down.
For now I branched firmware into firmware_eclairexl and firmware_legacy (for other pl... foft

08:32 PM Feature #76 (In Progress): Merge down to trunk

Made an svn copy of existing trunk (branches/releases/trunk_20181013_premerge)
Also made a backup of lots of random ... foft

10/12/2018

09:49 PM Core v31

A very simple, but hard to find, change this time!
Wizard of Wor was failing due to the code switching back and fo... foft

09:45 PM Bug #33 (Closed): Wizard of Wor

I modeled this by adding a 1 cycle delay on sel9bitpoly going high. The game then works! foft

09:04 PM Bug #33: Wizard of Wor

The high bit of audctl is sel9bitpoly. In the original chip is is delayed and then combined with itself. So I need a ... foft

08:44 PM Bug #33: Wizard of Wor

Altirra has two massive poly tables and selects between them with this flag. So, not really much help since here we a... foft

08:34 PM Bug #33: Wizard of Wor

I think the 17/9 bit lsfr is based on the decap schematics, so this is probably down to the number of cycles to delay... foft

08:33 PM Bug #33: Wizard of Wor

I set them to nop ... then the game works and no longer crashes! foft

08:19 PM Bug #33: Wizard of Wor

easier to set memory on xex or atx version...
36FD: A9 8F LDA #$8F
36FF: 8D 08 D2 STA AUDCTL... foft

08:10 PM Bug #33: Wizard of Wor

Will try nopping these to see (on cart!!)
A0BB: A9 8F LDA #$8F
A0BD: 8D 08 D2 STA AUDCTL
A0... foft

08:03 PM Bug #33: Wizard of Wor

With 8f for only ... 6 cycles foft

07:57 PM Bug #33: Wizard of Wor

It writes 8f and 00 often to audctl. This switches the shift register from 17 bit to 9 bit and back. Could there be s... foft

07:45 PM Bug #33: Wizard of Wor

No Pokey IRQs
Reads pots, writes potgo
Reads random
Reads skstat
+ plays some music
Nothing out of the ordinar... foft

10/11/2018

09:41 PM Bug #33: Wizard of Wor

I put my real pokey back in the 600Xl to confirm. Definitely works properly with real pokey and definitely fails with... foft

09:34 PM Bug #33: Wizard of Wor

Nope, fails with pokeymax in mono mode too!
So, the issue seems to be with pokey. OK, getting closer! Will check w... foft

09:25 PM Bug #33: Wizard of Wor

I'm trying it on my 600XL. I'm getting similar crashes, when running with PokeyMAX. So could be a Pokey bug, or incom... foft

08:10 PM Bug #33: Wizard of Wor

Crashes in the same way with T65, so... I guess its not a cpu bug! foft

08:04 PM Bug #33: Wizard of Wor

I think its a CPU bug, trying to wire up T65 to see if that works. If it does, I'll run the CPUs against each other a... foft

10/09/2018

08:55 PM Bug #33: Wizard of Wor

Disables them at $a535 then never re-enables... (this address is normal, I see this call on Altirra) foft

08:44 PM Bug #33: Wizard of Wor

One of the common crashes is when it ends up with the character set in the bottom half. In this state there are no NM... foft

07:39 PM Bug #33: Wizard of Wor

Tried shifting the dli, seems to then work.
Tried removing my cpu hack, no change.
Updated to latest cpu core, chan... foft

10/08/2018

08:01 AM Bug #33: Wizard of Wor

I have a feeling I did a cpu patch that I wasn’t certain about to fix the Irq blocking nmi acid test. I expect that i... foft

10/07/2018

09:03 PM Bug #33: Wizard of Wor

Planning to shift the dli so it does not overlap, to see if that fixes it. foft

08:29 PM Bug #33: Wizard of Wor

9c0c: pla on 2nd dli is when 3rd dli fires. This could be shifted by a few cycles on 'events', which could be when it... foft

08:16 PM Bug #33: Wizard of Wor

First dli, seems to reposition player and missiles - for map?
Second dli, wsync, change charset
Third dli, was ente... foft

08:00 PM Bug #33: Wizard of Wor

So, taking another look in Altirra:
Altirra> .dumpdlist
2110: x3 blank 8
2113: mode D @ 3500
2116:... foft

07:25 PM Bug #33: Wizard of Wor

Nope, I was just too rubbish and kept dying before it failed :-) foft

07:19 PM Bug #33: Wizard of Wor

Just testing it and ... tried the atx version and the cart version. They both work now! I guess due to a fix in the l... foft

03:32 PM Bug #33: Wizard of Wor

This one annoys me, raising the priority and going to take another look... foft

03:30 PM Feature #76: Merge down to trunk

This will probably break many (other platform) core builds on trunk in the short term... foft

03:30 PM Feature #76: Merge down to trunk

Keen to get this work back on the mainline. foft

03:28 PM Core v30

Fixed a few small, annoying longstanding bugs.
* Atari control picture missing half first colour bar
* Prozac Dre... foft

03:04 PM Bug #54 (Closed): GTIA issue when Turbo > 4X

There is a signal that tells gtia when to read the memory from the bus, correctly that signal's generation to allow f... foft

10/05/2018

09:36 PM Bug #75: USB keyboard stops functioning after idle period

Frustratingly, I have not been easily able to reproduce the effect with the keyboard it occurred on before. I will sp... Farb

09:33 PM Bug #75: USB keyboard stops functioning after idle period

How is it going with the other keyboard? foft

09:32 PM Bug #54: GTIA issue when Turbo > 4X

Data is read on the first completed cycle in an 'original cycle'. Remember this is 32x clock. The problem is that if ... foft

09:17 PM Feature #76 (Resolved): Merge down to trunk

Several requests to get some of these features back up and running on the mist. foft

10/04/2018

09:41 PM Bug #54 (In Progress): GTIA issue when Turbo > 4X

foft

09:41 PM Bug #54: GTIA issue when Turbo > 4X

Another one that bugs me, will look at this next since I'm sure its trivial... foft

09:30 PM Bug #60 (Closed): Prozac dreams large logo flickers

OK, that worked but broke an acid test. Now have a solution that works without breaking the acid test... Closing:-) foft

08:42 PM Bug #60: Prozac dreams large logo flickers

Nasty edge case around dma disabling for the last few cycles of the scanline and cpu cycle completion timing, combine... foft

08:10 PM Bug #60: Prozac dreams large logo flickers

There is an extra dma fetch at colour clock 0, investigating what is going on... foft

07:03 AM Bug #75: USB keyboard stops functioning after idle period

Well I just received Millionaire on disk so I can give it a go and see if I have the same issue. My keyboard definite... foft

10/03/2018

09:36 PM Bug #60: Prozac dreams large logo flickers

Wired up the pbi enable/disable to the menu, so I can turn it on/off and see the result on the frozen screen. Enough... foft

09:32 PM Bug #60: Prozac dreams large logo flickers

Its a plain antic 4 display. Seems to be a kernel that moves pmgs around and sets colours also changes character set.... foft

10:47 AM Bug #75: USB keyboard stops functioning after idle period

Yes, the core is still running because we were hearing music play. The game we were playing didn't use a joystick so ... Farb

10/02/2018

09:02 PM Bug #60: Prozac dreams large logo flickers

What do I know so far...
pbi disabled -> works
pbi enabled -> breaks
Tried instead by delaying the cpu enable 20... foft

08:42 PM Bug #75: USB keyboard stops functioning after idle period

sadosp wrote:
> Farb wrote:
> Could be irrelevant but I haven't replaced a faulty ribbon cable that caused joystic... sadosp

08:39 PM Bug #75: USB keyboard stops functioning after idle period

Farb wrote:
Could be irrelevant but I haven't replaced a faulty ribbon cable that caused joystick problems. I merel... sadosp

07:25 PM Bug #75: USB keyboard stops functioning after idle period

Unlikely to be the ribbon, though if its iffy you should replace it. I say that because while the joysticks are conne... foft

02:41 PM Bug #75: USB keyboard stops functioning after idle period

I have seen it happen a few times using the same USB keyboard (which was also the same keyboard I used on the MiST an... Farb

10:27 AM Bug #75: USB keyboard stops functioning after idle period

Two potential problems:
1) max number of devices was decreased in v28, should have no impact but it was a change.
2... foft

10/01/2018

10:16 PM Bug #75 (Closed): USB keyboard stops functioning after idle period

I have noticed in the last few core builds (up to and including v29) that if the USB keyboard is idle for too long, i... Farb

09/29/2018

02:59 PM Bug #60: Prozac dreams large logo flickers

This one annoys me, since the cycle position change should not break anything in antic. Should be easy to make a core... foft

02:58 PM Feature #32: option to connect the original ATARI XL keyboard to ExclairXL

One from back in the day...
https://www.youtube.com/watch?v=GB3ywcwsoiM
On pokeymax I'm using an i2c to parallel ... foft

02:51 PM Bug #52 (Closed): Atari Control Picture

Fixed by giving gtia modes priority over the high-res mode. This fixes the acp while acid still passes.
Still awar... foft

09/28/2018

09:41 PM Bug #52: Atari Control Picture

So this is mode 8 to mode 9. 'clean transition after 4 colour clocks'.
The Eclaire takes 5 colour clocks here and ... foft

09:38 PM Bug #52: Atari Control Picture

For reference, the relevant passage from the Altirra hardware reference manual:
GTIA mode changes
A change to bits ... foft

09:35 PM Bug #52: Atari Control Picture

I fixed this by adjusting the delay on turning off the highres flag when switching into gtia mode. However it broke t... foft

09/27/2018

10:06 PM Bug #52 (In Progress): Atari Control Picture

Managed to capture in the logic analyzer with lots of info... Now just need to understand it then I can fix! foft

07:15 PM Bug #38 (Closed): Numen crashes on v9

foft

07:12 PM Feature #73 (Closed): Implement ATX disk image support

Closing this, since the core support is present. Of course we can raise new tickets for improvements/fixes or e.g. 10... foft

09/26/2018

09:55 PM Bug #74 (Closed): Mounted disks don't always load

Closing as I think this is fixed in v29. Reopen if problems still seen! foft

09:54 PM Core v29

More in-built sdrive improvements...
* Upgrade to latest ATX code
* Fixed SIO high speed selector in menu
* Uses... foft

09/25/2018

10:08 PM Bug #74: Mounted disks don't always load

In the end I chose to use the SIO clock for receiving command packets. I also count the rate. Then I reply using the ... foft

09/21/2018

11:48 PM Bug #74: Mounted disks don't always load

Except I need to send start bit from zpu to start that clock. Probably a fairly simple state machine change, but gett... foft

10:53 PM Bug #74: Mounted disks don't always load

On second thoughts, why guess when I know. Pokey is already outputting the serial input anyway (even in input mode, s... foft

09/20/2018

09:29 PM Bug #74: Mounted disks don't always load

Implemented using sio clock out as the zpu clock input. Should mean it can listen to whatever speed. Though of course... foft