64kib

05/16/2017

10:02 PM EclaireXL Wiki edit: Wiki (#8)

foft

10:02 PM EclaireXL Wiki edit: Wiki (#7)

foft

10:01 PM EclaireXL Wiki edit: Wiki (#6)

foft

10:01 PM EclaireXL Wiki edit: Wiki (#5)

foft

09:24 PM EclaireXL Feature #13: 32x speed cpu without wait states

I enabled 32x mode in the core and sorted out single cycle writes from the block ram for now. Hardly any difference i... foft

09:22 PM EclaireXL Bug #17: NTSC crashing on some builds

Ijor recommended I try registering the input directly from SDRAM. I've done this and see if it helps.
He is also k... foft

08:30 PM EclaireXL It is time!

Panos will be in touch about shipping... foft

05/12/2017

09:52 PM EclaireXL Bug #17 (Closed): NTSC crashing on some builds

Investigate why... On the v1 core this occurred when running the PLL at very high fVCO. However we already fixed that... foft

07:48 PM EclaireXL Bug #16 (Closed): Audio bug report for Altirra

One for the coders, please can you check if these bugs are present?
From post on atariage...
http://atariage.com/... foft

05/11/2017

09:42 PM EclaireXL Feature #15: Implement programmable PLL

Attaching PLL chip datasheet foft

09:41 PM EclaireXL Feature #15 (New): Implement programmable PLL

See if the programmable PLL works. This will allow us to support different/custom VGA modes, once we have EDID/DDC wo... foft

09:05 PM EclaireXL Developer: RE: Which case are you getting?

I had been hoping to get a custom wooden case made. Unfortunately I couldn't convince him to sell me one - http://sli... foft

09:04 PM EclaireXL Developer: RE: Which case are you getting?

I guess you can make a custom sub-board for it so the cart can go in that nice door on the back. All the support chip... foft

08:38 PM EclaireXL Feature #13: 32x speed cpu without wait states

So thinking about options...
Double the main clock speed and pipeline a bit
or
Output next address from antic a... foft

08:34 PM EclaireXL Feature #7: Implement I2C vga/hdmi support

Used this controller for the ADC on v1: https://eewiki.net/pages/viewpage.action?pageId=10125324
So I guess I just n... foft

08:30 PM EclaireXL Feature #7: Implement I2C vga/hdmi support

DDC looks a little funkier foft

08:28 PM EclaireXL Feature #7: Implement I2C vga/hdmi support

EDID is apparently one of these I can access at address 0x50 foft

08:26 PM EclaireXL Feature #7: Implement I2C vga/hdmi support

Attached mux/level converter chip data sheet foft

08:27 PM EclaireXL Feature #8: Implement 4 channel ADC

Attached ADC data sheet foft

08:25 PM EclaireXL No sign of FT232 chips

Panos is chasing up - and if not good news he will order from somewhere quicker!
In the meantime I've added ADC su... foft

05/08/2017

10:08 PM EclaireXL Feature #8 (In Progress): Implement 4 channel ADC

Written initial support based on data sheet and simulated. Not yet built into test core or tried on real hardware.
... foft

05/04/2017

09:25 PM EclaireXL Feature #13: 32x speed cpu without wait states

Nope, this is not going to be so simple... Massive timing violations. foft

05/03/2017

08:29 PM EclaireXL Developer: Which case are you getting?

Since the boards are almost ready, does everyone have their case ready.
Both Panos and I have an MHero S R case an... foft

08:27 PM EclaireXL Missing parts

Panos is waiting for the last few remaining parts to arrive. Most notably the FT232 USB chip. We're expecting they wi... foft

05/02/2017

10:15 PM EclaireXL Feature #14: Svideo core for first prototype

Debugged in isim to get lots of overflow/underflow/blanking/burst incorrect cases!
Added colour bars and asserts for... foft

06:40 AM EclaireXL Feature #14: Svideo core for first prototype

Scaled luma with 64 space for chroma - when in composite mode only. No point throwing away svideo brightness.
Adde... foft

06:38 AM EclaireXL Sub PCB - now populated!

!sub-board-pop.jpg! foft

04/30/2017

09:06 PM EclaireXL Sub-board

Here is the first picture of a sub-board, which also arrived in Greece. None completed yet but all the parts fit - an... foft

09:01 PM EclaireXL Video DAC regulator patch

Here is a picture of the patch Panos has skillfully applied to the boards.
!patch.jpg! foft

08:58 PM EclaireXL Boards received

The boards arrived in Greece. Panos is in the process of adding some final parts and trying them out.
Some good n... foft

04/26/2017

08:54 PM EclaireXL Feature #14: Svideo core for first prototype

Setting this up in the simulator so I can understand chroma better.
The problem seems to be that I've used all the... foft

08:51 PM EclaireXL Feature #13: 32x speed cpu without wait states

I have something working on the simulator - alone. Now need to plug it into the core proper to see if it works. Will ... foft

04/24/2017

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

Should add that this should not be done for direct chroma output for svideo... Since that is still on a 0-0.7V DAC ou... foft

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

Panos tried out a new core with composite only - on green using the sync pin. Looks brighter but just black and white... foft

07:58 PM EclaireXL Feature #14 (Closed): Svideo core for first prototype

Waiting the Chinese sun to rising, I decide to proceed with the "video mod" of our v 1.0 board. So I desolder the "vs... foft

07:56 PM EclaireXL Pictures!

The PCB company sent us an initial picture!
!v3board_small.jpg! foft

04/18/2017

10:22 PM EclaireXL Developer: RE: Register differences vs the original

I see, to protect against existing writes - which are most likely not repeated. Any thoughts on address?
I'm worki... foft

10:19 PM EclaireXL Delays

We received an update from the PCB company. Unfortunately it wasn't to say 'shipping' as we'd hoped.
Instead they... foft