64kib

11/17/2019

09:10 PM EclaireXL Feature #84: Add SID

Attaching some of the octave files from investigating this for reference + the wave files + other useful bits I found... foft

09:07 PM EclaireXL Feature #84: Add SID

Did some research over the weekend. Generating these isn't a terribly trivial problem!
I tried for some time to ge... foft

11/12/2019

10:19 PM EclaireXL Feature #84: Add SID

It sounds good to me, but not sure what it is meant to sound like!! foft

10:19 PM EclaireXL Feature #84: Add SID

Also wondering if the clk frequency is important (not enable), I see some state table increment on every clock, which... foft

10:18 PM EclaireXL Feature #84: Add SID

Wondering about some kind of bit map of unpopulated locations (reducing locations) or a 2nd lookup layer (reducing bi... foft

10:04 PM EclaireXL Feature #84: Add SID

I loaded the tables in to octave to take a look.
Observations...
* Not a simple curve
* Lots of zeros, >80% in ... foft

10:02 PM EclaireXL Feature #84: Add SID

Actually the issue with fitting in v2 is block ram, not ALMs. Though its always good to save ALMs!
The sid tables ... foft

11/09/2019

10:05 AM EclaireXL Feature #84: Add SID

Also got this potential USB sharing, that'd save 750 ALMS. Each request/reply is host initiated, so no reason can't s... foft

10:03 AM EclaireXL Feature #84: Add SID

600 alms each, will use mono sid I guess. Or make it a generic and enable on the larger boards? foft

10:00 AM EclaireXL Feature #84: Add SID

Logic utilization (in ALMs) 9,808 / 9,430 ( 104 % ) foft

09:56 AM EclaireXL Feature #84: Add SID

Have a dual 8250 working, though it doesn't fit in the smaller boards. Investigating why, memory or logic... foft

09:56 AM EclaireXL Feature #84 (New): Add SID

Agreed to try adding a SID to the pokeymax.
Eclaire is a good test bed for this, so starting out with that foft

10:00 AM EclaireXL Bug #69: Some TVs confused by hdmi audio

Hias had some clever approaches, capturing the digital audio out from the tv etc foft

09:59 AM EclaireXL Bug #69: Some TVs confused by hdmi audio

I dug into this a bit with Hias. It turned out the issue for him was noise from the dac, so distinct issue. Though I ... foft

09:58 AM EclaireXL Feature #32: option to connect the original ATARI XL keyboard to ExclairXL

Panos kindly sent me the boards he designed. I put together the bom on mouser and digikey. will order some parts and ... foft

09:55 AM EclaireXL Feature #51: Debug port

Now I have the saleae I figure I can stream this more reliably to the PC. Will have a go at this soon... Perhaps I wr... foft

09:54 AM EclaireXL Feature #82: Setting for mono pokey

With adding sid should probably allow that to be on/off too.
pokey 1/2
sid 0/1
2 bits? foft

09:44 AM EclaireXL Bug #83: Many USB hubs do not work

Just did a bit more testing. Two hubs, two keyboards and a joystick. Fiddled with unplugging/re-plugging etc and all ... foft

11/08/2019

10:58 PM EclaireXL Bug #83 (Closed): Many USB hubs do not work

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10:57 PM EclaireXL Bug #83 (Resolved): Many USB hubs do not work

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10:54 PM EclaireXL Bug #83: Many USB hubs do not work

Got it, I needed to set the line control earlier on. It was set to 'NORMAL' after the reset and this leads to the SET... foft

11/07/2019

10:53 PM EclaireXL Bug #83: Many USB hubs do not work

This setup is so much better for debugging than on the Eclaire. I have gdb on linux to debug the binary, I can printf... foft

10:49 PM EclaireXL Bug #83: Many USB hubs do not work

The hub is detected as connected, then it tries to set the address and fails.
So, the keyboards I'm using are low ... foft

10:07 PM EclaireXL Bug #83: Many USB hubs do not work

OK, circuit build and wired up. I can type on the sockit.
Now to get some debugging in place and try the hub. foft

11/06/2019

08:57 PM EclaireXL Bug #83: Many USB hubs do not work

Wired up the USB to gpio, added another pll for the pll clock.
Now will get the software to poll usb and see if I ... foft

11/05/2019

10:12 PM EclaireXL Bug #83: Many USB hubs do not work

Updating the avalon arm regs, to the latest zpu config regs. Which has USB...
Will also add another avalon slave ... foft

11/04/2019

10:38 PM EclaireXL Bug #83: Many USB hubs do not work

Managed to get the core flashing ok (was bad rbf generation).
Also installed gcc and the binaries are running ok.
C... foft

11/03/2019

10:21 PM EclaireXL Bug #83: Many USB hubs do not work

Well I can flash it and get sync on vga, but no dice. I remembered I needed to run the firmware binary. I flashed the... foft

08:24 PM EclaireXL Bug #83: Many USB hubs do not work

Managed to get the SOCkit board up and running and set up linux.
Now going to build/flash the existing 800 core as ... foft

09:25 AM EclaireXL Bug #83: Many USB hubs do not work

I've known about this for a long time but have never really looked into it, since its a pain and hubs are not that im... foft

09:23 AM EclaireXL Bug #83 (Closed): Many USB hubs do not work

Only the hub I did initial testing with works. Investigate why. foft

11/01/2019

10:34 PM EclaireXL Feature #82 (New): Setting for mono pokey

Hias asked me for a mono pokey mode, where its output to both speakers.
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10:17 PM EclaireXL Bug #75 (Closed): USB keyboard stops functioning after idle period

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10:17 PM EclaireXL Bug #75 (Resolved): USB keyboard stops functioning after idle period

Added a timer elapsed function that handles the overflow. This makes the max delay 35 mins, but I think that is ok...... foft

09:32 PM EclaireXL Bug #75: USB keyboard stops functioning after idle period

((2^32)/1e6)/60 = 71...
So trivial fix. I clearly don't need the Saleae to debug this one, but that isn't so bad. ... foft

09:30 PM EclaireXL Bug #75: USB keyboard stops functioning after idle period

Trying it with two keyboards. So far an hour and working.
Though I have a hunch that it'll stop working in 10 minu... foft

10/31/2019

10:47 PM EclaireXL Bug #75 (In Progress): USB keyboard stops functioning after idle period

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10:36 PM EclaireXL Bug #75: USB keyboard stops functioning after idle period

OK, finally froze. I could still enter the menu with fire and it worked. So ZPU is alive, just USB is dead.
Ordere... foft

10:22 PM EclaireXL Bug #75: USB keyboard stops functioning after idle period

I left it for an hour, then typed and it worked... sigh. foft

09:25 PM EclaireXL Bug #75: USB keyboard stops functioning after idle period

While I mull that I tried building a core that can enter the menu with fire. So I can see if it is indeed USB that cr... foft

09:24 PM EclaireXL Bug #75: USB keyboard stops functioning after idle period

Tempted to get a Saleae logic USB3 analyzer to capture at a higher rate and they also have USB decoding. Its several ... foft

09:23 PM EclaireXL Bug #75: USB keyboard stops functioning after idle period

So, decided to take it seriously.
My picoscope claimes to decode USB, tried that and found it pretty poor.
So I tri... foft

09:21 PM EclaireXL Bug #75: USB keyboard stops functioning after idle period

Jurgen has this with both his keyboards after about 20 minutes.
I also thought I saw it when running the Eclaire for... foft