[djc6]

What input on the OSSC supports LumaCode?  Once the firmware is upgraded of course.  Isn’t LumaCode typically on an RCA male style connector?

[djc6]

Are you in the USA?  I think S-video was a mostly USA thing.  I bought this cable from vendor in USA:

Commodore 64/128/16/+4 8-Pin DIN S-Video & RCA AV Cable

there should also be some on eBay.  Here is one from a UK seller: https://www.ebay.com/itm/250925966106?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=47HsXjQYSm6&sssrc=2047675&ssuid=NiSURDWTSxG&widget_ver=artemis&media=COPY

A lot of people add a 300 Ω resistor to some pin on the s-video cable to somehow improve video quality on LCDs.  I don’t know the details.  I don’t know if this is beneficial for the Koryuu or not.  The cable I purchased from 8-bit classics has the resistor.

The eBay listing above also mentions adding this resistor – if you scroll down and read the details its on the image showing purpose of each connector.

• This reply was modified 1 year ago by djc6.
• This reply was modified 1 year ago by djc6.
• This reply was modified 1 year ago by djc6.

[djc6]

I didn’t really change anything in the OSSC. I just plugged in to Koryuu and used OSSC defaults. I just changed input on OSSC to component.

The Koryuu does have four ‘inputs’ to cycle through; I think “S-Video + pedestal (7.5 IRE mode)” looks best on my LCD the colors are a little more saturated.

[djc6]

megari, The changes look good – Thank You!

I tried to register on the wiki to make similar changes myself, but I never received an approval email.

[djc6]

The Koryuu product page has an even better description: https://videogameperfection.com/products/koryuu-transcoder/

[djc6]

Upgrade worked immediately using the apparently required additional AVR-ICSP cable! FYI, I ran Windows 10 within VMware Fusion on MacOS Big Sur 11.2.3 with a 2018 mac mini – since I don’t have a PC. Worked fine.

One annoyance, neither the six pin ribbon cable that came with AVR-ISP-MK2 nor the cable included with AVR-ICSP adapter have red stripe indicating pin 1.

[djc6]

This post in another thread here mentions using AVR studio and MKII to update Koryuu:

New Koryuu test firmware 1.1-test1

NOTE: I’ve no experience programming MCUs

[djc6]

This post answered my question: https://videogameperfection.com/2021/03/15/koryuu-firmware-update/

[djc6]

I just started playing with the RF-bypass + Koryuu + OSSC (no Lumafix) on my NTSC C64 and I agree it looks really good. Picture is sharp, and the jailbars are minimized to the point I haven’t felt the need to try lumafix.

[djc6]

c0pperdragon published a VIC-IIe adapter for the C128 – someone used itand placed the FPGA board external to the C128 and got it working:

https://github.com/c0pperdragon/C64-Video-Enhancement/issues/4#issuecomment-757479875

Exciting! Looks good!

[djc6]

I was able to use balenaEtcher which is an open source utility to write the firmware image to an SD card. Available here: https://www.balena.io/etcher/

It wasn’t bootable or readable by the mac, but the card worked in the OSSC.

I also used the SD Memory Card Formatter tool from the SD Memory Card Association to do an Overwrite format of the card prior to writing image to it:

https://www.sdcard.org/downloads/formatter/

[djc6]

The component video mod will NOT work in the C128. The C128 uses the VIC-IIe chip which is 48-pin and the C64 VIC-II is 40 pin.

There is some discussion of a C128 version in c0pperdragon’s github: https://github.com/c0pperdragon/C64-Video-Enhancement/issues/4

For the C128 two solutions for clearer S-video that I know of are the ClearVideo128 RF modulator replacement by Jay Desmarais, and the Shuriken 128 by commodore4ever.

[djc6]

I have a C64 with the a vgp s-video bypass and lumafix to try out

[djc6]

I put a link to a video in one of my forum posts by uploading it to dropbox, sharing it publicly and then putting a link in the forum post:

64C Image scrolling vertically w/component mod

[djc6]

I ended up going with component video mod: https://videogameperfection.com/products/commodore-component-video/

And an OSSC. Expensive solution for sure, I also had to invest in all the tools to install the mod – but it was fun, I learned something, and the video output quality is superb. Also, I’ve been using the OSSC for other devices – it works great for the Commodore 128 80-column mode as well! I posted a summary here: https://videogameperfection.com/forums/topic/commodore-128-cga2rgbv2/#post-41265

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