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From 04/12/2017 to 05/11/2017

05/11/2017

09:42 PM Feature #15: Implement programmable PLL
Attaching PLL chip datasheet foft
09:41 PM 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
08:38 PM 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 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 Feature #7: Implement I2C vga/hdmi support
DDC looks a little funkier foft
08:28 PM Feature #7: Implement I2C vga/hdmi support
EDID is apparently one of these I can access at address 0x50 foft
08:26 PM Feature #7: Implement I2C vga/hdmi support
Attached mux/level converter chip data sheet foft
08:27 PM Feature #8: Implement 4 channel ADC
Attached ADC data sheet foft
08:25 PM 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 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 Feature #13: 32x speed cpu without wait states
Nope, this is not going to be so simple... Massive timing violations. foft

05/03/2017

08:27 PM 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 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 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 Sub PCB - now populated!
!sub-board-pop.jpg! foft

04/30/2017

09:06 PM 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 Video DAC regulator patch
Here is a picture of the patch Panos has skillfully applied to the boards.
!patch.jpg!
foft
08:58 PM 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

11:43 PM Document: Eclaire XL v1.0 Board Spec
Eclaire XL v1.0 Board Spec sadosp
11:43 PM Eclaire XL v1.0.jpg
sadosp
11:43 PM Eclaire XL v1.0 b.JPG
sadosp
11:42 PM Eclaire XL v1.0 Spec.odt
sadosp
11:42 PM Eclaire XL v1.0 Spec.jpg
sadosp
08:54 PM 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 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 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 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 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 Pictures!
The PCB company sent us an initial picture!
!v3board_small.jpg!
foft

04/18/2017

10:19 PM Delays
We received an update from the PCB company. Unfortunately it wasn't to say 'shipping' as we'd hoped.
Instead they...
foft

04/12/2017

10:07 PM Feature #13 (In Progress): 32x speed cpu without wait states
Trying simply feeding in the clock at twice the speed to see if it passes timing! foft
 

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