EclaireXL

03/01/2020

FO 10:32 PM Feature #85: 720p support/1080i support

Checked on the ram block input/output when built with 32KB and 64KB.
Same input, same mif, different output...
Check the output of ram_block_1a0 vs the input (myNextOpCode[1-7] and nextOpcInfo[42])
With block shared:
!problem.bmp!
W... foft

02/27/2020

FO 11:10 PM Feature #85: 720p support/1080i support

Tried to upgrade from Quartus 18.0 to 19.1. Same issue. foft

FO 10:28 PM Feature #85: 720p support/1080i support

Problem is with E8:
002020100112
bit 20 == high = opcStackUp.
This isn't what is in the constant table, so not clear why quartus is returning that.
Combined with 32KB, so no overlap I see:
002020000112
Where does that bit er... foft

02/26/2020

FO 10:57 PM Feature #85: 720p support/1080i support

Its opcodeInfoTable that is getting put into altsyncram. Not sure why its invalid yet. I'm trying the ramstyle attribute but didn't find the right voodoo yet... foft

FO 10:28 PM Feature #85: 720p support/1080i support

with 32k, the block is not shared. I guess something is accessing memory where it shouldn't... foft

FO 10:04 PM Feature #85: 720p support/1080i support

M10K is shared:
atari800core:atari800|cpu:cpu6502|cpu_65xx:cpu_6502_peter|altsyncram:Mux54_rtl_0|altsyncram_ag91:auto_generated|ALTSYNCRAM AUTO ROM Single Clock 256 1 -- -- yes no -- -- 256 256 1 -- -- 256 1 0 atari800core_eclaireXLv1.a... foft

FO 10:03 PM Feature #85: 720p support/1080i support

with 64k
atari800core:atari800|cpu:cpu6502|cpu_65xx:cpu_6502_peter|altsyncram:Mux54_rtl_0|altsyncram_ag91:auto_generated|ALTSYNCRAM AUTO ROM Single Clock 256 1 -- -- yes no -- -- 256 256 1 -- -- 256 1 0 atari800core_eclaireXLv1.atari800... foft

FO 09:54 PM Feature #85: 720p support/1080i support

I guess related to the opcinfo storage somehow. with 32k get this:
atari800core:atari800|cpu:cpu6502|cpu_65xx:cpu_6502_peter|altsyncram:Mux54_rtl_0|altsyncram_ag91:auto_generated|ALTSYNCRAM AUTO ROM Single Clock 256 1 -- -- yes no -- --... foft

FO 09:52 PM Feature #85: 720p support/1080i support

On v1 its all working, with 32K block ram as system ram. Once I put it to 64K block ram as system ram (which JUST fits) I never get to basic. After some playing with the logic analyzer (tricky, no block ram!) I can see that at C4F1 the C... foft

02/23/2020

FO 10:23 PM Feature #85: 720p support/1080i support

Got this merged down to svn and also v1 and v3 building.
Was hanging on purely internal i2c. Changed master and slave (+glue) to use in/wen instead of inout and working better. Slightly corrupt output on v1. I think this might be due ... foft

02/13/2020

FO 10:24 PM Feature #85: 720p support/1080i support

I have the crtc/scaler settings now in the flash chip (except scaler filter).
Upside: doesn't waste space in firmware
Downside: people will need to flash with usb blaster, rpd method will brick the video. foft

02/09/2020

FO 09:27 PM Feature #85: 720p support/1080i support

Oh and the clkgen chip can drive the video too, for those who want to try custom modes. I've not tried it yet since its statically set up at 30MHz iirc, but should give it a spin. foft

FO 09:25 PM Feature #85: 720p support/1080i support

I have all these modes working properly from the firmware.
NTSC:480i/480p/720p/1080i
PAL:576i/576p/720p/1080i
All in 4:3
480p/576p and 720p all skip a pixel, so 4x gr.0 or gr.8 isn't great.
480i and 1080i do not! Yes, 480i is bett... foft

FO 10:01 AM Feature #85: 720p support/1080i support

The dev of another hdmi library posted it on hacker news. Worth a look.
https://github.com/hdl-util/hdmi foft

02/02/2020

FO 10:38 AM Feature #85: 720p support/1080i support

It seems pretty clear that on the 2nd board can use the reconfigurable clock to provide 27MHz and 74.25MHz hdmi clocks, by reconfiguring it. These can drive clk6p into the 3rd pll, which does x5 for the tmds clk (/2).
For the others..... foft

FO 10:30 AM Feature #85: 720p support/1080i support

Clock switching is proving fun, due to a bunch of constraints!
1st board: 50MHz on H16 (CLK11p) - which is connected to FPLL X0_Y38,X54_Y38, but not the other two
2nd board: : 50MHz on H16 (CLK11p) - which is connected to FPLL X0_Y3... foft