[aotta]

@megari, i flashed the hex in your release RC3 zip files. I did it again, after noticed no difference from the RC2 FW.
And what i get it’s exactly how you listed. About time in 4), i waited same seconds and few minutes, but no changed.
You know my board has some hw issue since arrival, and my replacing the ATMEGA may be added some other oddities to my Koryuu… i think you should’t take my test in care, if i’m the only user that has this result.

[aotta]

hi @megari and Merry XMas!
i just flashed your RC3 bud didn’t found differences from the previous RC2 one: if no input at Koryuu starting, it wake up only with a power cycle or at change input setting’s cycle.
If Koryuu find input signal at startup, it works normally, but show test pattern when input source is powered off.
I dont’ know if it’s the expected behaviour. Tested with both s-video and composite input.

[aotta]

@megari Tested and confirming that cycling inputs wake up video correctly. But i think the original scope of the user asking for the NTP feature was leave Koryuu always powerd and hidden behind the TV/Monitor, so a different approach will be useful (although i think too it’s not so safe for Koryuu’s lifetime).

[aotta]

Hi @megari, you got it! RC2 works fine with both composite and s-video (no) input!
The only (very) minor issue is that, i think, the null input is checked only at startup, so if power on the input after some time, Koryuu continue to sleep.
But i’m very happy to have the NTP working, and interested in looking at changes you made to code!
Thank you!

[aotta]

@megari: i flashed the -ntp firmware on Koryuu and i got test pattern in output composite when no cable it’s connected in input ports. Just tested your RC1-ntp too, same result. I reflashed the default version, and made some “verify” to be sure the fw in the AVR is loaded fine, but found no error in flashing memory. I didn’t found the version 1.0 to make further test, is there some others check i can do?
edited:
after more test, playing with code of your main.cpp, i rid off of the test patter only removing the write in 0x82 and 0x84 subaddress, where you put the #if 0 conditional compiling: in this way, i got no test pattern (and, no computer output too, but i expected this), but…. the OSSC find in any case an output signal and its auto tune set the input to Koryuu!
Wasn’t that the scope of the NTP version? i think i’ll remain to the “default” branch and poweroff the koryuu when not in use.. it’s simpler and more “green” 😉

[aotta]

i can compute che checksum if you want, but i didn’t compile myself the hexes files, i used the one zipped in your github files koryuu-fw_1.1-test1.zip. Setting are stored when stored with both buttons, and parameters to set aren’t so much to need the eesave fuse, i think. Anyway, i used fuse setting found in other forum: H:D1, L:62, E:FF.
About the original AVR, now i’m pretty sure it was fine, but i damaged a couple of pins while desoldering, so it went to e-trash with the arduino nano board… anyway, it was a five euros clone, so it wasn’t a great lost.

[aotta]

you can search for an USPISP or USBASP programmer, you’ll find many at few dollars on all hw store. Choose the one with 6 pin ISP cable.
Then, you can follow the guide you linked, or use ATMEL studio tools (but this last one SW it is compatible only with “MKII programmer”).

[aotta]

@megari, now i can play with FWs, i’ve a question about FW1.1 t1: i tested both “normal” and “ntp” versions, but i got the coloured vertical bars with ntp one’s too. Is it not the version without output if no input signal? i missed something?
Thank you for your patience and support!

Edit: and, for curious guys, the result of my Koryuu surgeon: https://imgbox.com/PsVK3MXM

[aotta]

The lsf204 code is unreadeable after flush, hot gun, and EPA cleaning.. From a pic I got before working on it, it seems a TI (from the logo) LSF204 97A33 P1FC. Thank to your pinout, i removed the Lsf204 at all and rewired isp’s pins to input pads. I programmed the avr without the psu, and it worked too, with avr studio tools reporting 3.3v in reading voltage.. I hope it’s safer in this way.

[aotta]

@megari, i made my homework: desoldered AVR and replaced with a pre-programmed (i took it from an arduino nano) atmega328p, and it worked but still no ISP programming.
In desoldering, i lift a IC’s pad (the pin26 – PC3): Koryuu seems to work fine, but since there is no schematic, can you tell me the right connection, so i can repair it?
So, i try a different way: i bypassed the LSF0204 and directly connected the MISO, MOSI and Reset from ISP port to AVR: Avrstudio and MKII find the AVR and i could program it!
Now i’ve 3 small green wires flying under the Koryuu’s shell, but it finally can be update!
May be my LSF0204 is gone? I found in a Texas Instruments’ datasheet that pins 6 and 9 are not connected in TSSOP 14 pin LSF0204, while in Koryuu they are used.. could it be related to my issue?
Thank you for your support!

[aotta]

Thank you @megari for the info and the hints, but I’m not sure how to proceeded.. Isp pin 5 (reset) seems connected to pin 5 of LSF 204, and its pin 10 goes to atmega’s reset pin: programmer pulse low right the isp pin, but ic’s pins remain high (2.89v). So, where could I add the resistors?
I’m pretty sure my cable connection it’s right, I checked the continuity on isp connection, and my programmers work fine with all my uno and mega arduino boards, so I’m afraid my koryuu has something wrong. I ordered a couple of.atmega328p, but i’d leave the ic replacement as last chance.

UPDATE: i desoldered Atmega328P pin 29 (Reset) and… Koryuu still works fine, so the reset pin was disabled by factory (or, i think, the Koryuu had to stay always in reset state and never start)

[aotta]

i made further test with multimeter, and found the reset pin in ATMEGA328P is always high (3.28V): are the board sold by videogameperfection burned with RSTDSBLD, so they can’t be updated??

[aotta]

Thank you @megari for the help and for your great FW and, yes, i mistyped the programmer’s name, i used the TL866A and TL866 II, powering the board with only it’s psu and by the ICPS vcc line (it gives 5V) only too, with its own programming tools. I checked the wiring connection with the Wiki’s pictures, but the programmer didn’t recognize the ATMEGA328P chip. It worked fine everytime with Arduino’s board, but tomorrow it should arrive the new usbasp programmer i bought for a few euros, so i’ll be able to do further test: I can’t look to use the new “save settings” option!

For the Y to Pr swapping, i supposed it was not only a software quest, so i’ll continue using cable (or Male to Male adaptors, flipping the Koryuu top-down, it worked but it looks not very nice! 😉

And, about the “ugly” smoothing, i think it’s useful in some situation (for example, it reduces the artifacts in some solid colour i found with commodore’s and atari’s 8 bit) but the text are less readeable: it will be useful to smooth only “near” colours, and leave more sharp when pixel’s colours are more different!

Edit for update: tested with new USBISP programmer, but no luck: failing initialization, can’t enable chip, etc.. error with ProgISP and khazama i get.
Other strange thing, when connected to PSU, i get 5.28v on pin 2 of ASP port even if power toggle is off! is it normal or the board i get has something wrong?

[aotta]

Thank you megari for the improvements to the FW, i tried to update my Koryuu with my TL899 programmer (i use it with other ATMEGA328P devices, like Arduino’s) but with no success. Waiting for the usb programmer ordered in next days to make further test.
In the meanwhile, i wonder if is possible to change the component output from YPbPr to PrPbY as option: i bought Koryuu for working in side to OSCC, and found in a blog that they could be connected by male to male rca adaptor, but obviouvsly it’s not possible because red and blue connector are inverted when Koryuu and OSSC are connected directly. From a quick look at source code, and without schematics, i can’t understand if the RCA are hardcoded or they could be swapped by firmware, can you give us some more info?

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