PAL turbografx NTSC mod

[thesteve]

ok remove PCZ80

jumper in clocks (jumper from pin6 to pins 15 and 22. jumper pin10 to pin11)
jumper in sync (pin16 of PCZ80 to pin40 of HuC6260)


system clock X201 change to 21.4772Mhz

color clock X202 change to 3.579545Mhz


and clip pin7 on the cxa1145 and tie it to 5V

[thesteve]

note TC201 is the dot crawl adjustment

[thesteve]

[Necromancer]

A couple relevant questions and answers from the other thread:

Couple of questions for thesteve:

1. where the pcz80 was, where is the white with blue stripe wire going to (possibly a picture missing)?  also is there something connected on the other side of the board to pins 17,18, and 19 as they are filled with solder?

2. can you use the same type of clock for the system as you used for the color clock?  the person in the tutorial I linked to earlier did so I would assume it would work, but dont know if they did something wrong.  if so, this seems like it would be easier as you wouldn't have to drill any holes or use a jumper wire.

thanks.

i did all my jumpers topside for visability
striped wire on 15 runs to pin40 on the HuC6260
yes you could use a standard crystal for system clock, i just had the brick handy

[schweaty]

i dont think this video embed is working and i've tried a half dozen things but here is some footage of thesteve's work in action:


the audio is terrible, but my bullshit doesnt add anything to the video

[Necromancer]

i dont think this video embed is working....

It won't embed secure links, so remove the 's' so it starts with http://

[wilykat]

youtu.be won't embed properly, get regular youtube link first

[sirhcman]

i dont think this video embed is working and i've tried a half dozen things but here is some footage of thesteve's work in action:

the audio is terrible, but my bullshit doesnt add anything to the video

For the love of god schweaty turn the camera sideways! Just kdiding, thanks for showing it off.. looks awesome!

[chop5]

awesome work steve

[mickcris]

The one I bought came today so I decided to do the PAL to NTSC mod and also RGB mod using the Sony encoder.

bigger pic:

The normal Din 5 PCB mount has the same footprint, but the pins are all different.  I wanted to use the same scart cable pinout as my other systems so I had to cut some traces and use jumper wires to get it back to normal.  If doing this, note that the ground pin also needs severed on the other side of the board.  Then I used a normal Din 8 PCB mount with pins 6,7,and 8 trimmed.

Bigger pic:

Here is a pic of the note i took while confirming the pin-out in case it helps someone in the future:


thanks again thesteve!

[Ergot_Cholera]

Mickcris. Where you have the 3 220uf caps on the RGB lines from the CXA1145, don't you need 75R's on there too, or are they in your cable?

I just looked at the image close up and can see that you have resistors on there in heat shrink. My mistake.

[GreatBlueSwirlof99]

There's a PAL TG16? But we never got It!? Whaaat?

[Ergot_Cholera]

I have just performed this mod and I think I prefer the RGB output of this (from CXA1145) compared to a THS7314. There are no jailbars and the colours look to have better saturation. I think this will be my first choice Hucard console once I perform a region mod.

[Supercom]

Just got done with the mod myself works good, a huge thanks to thesteve. However, I'm getting some extreme dot crawling in the CXA1145 composite video output, although after some adjusment to the variable capacitor I think I've found a sweet spot.  Any suggestions to soften the issue?



And now is even compatible with the CD-rom system too 

[108 Stars]

Out of curiosity:
I heard that the PAL TG16s were basically modded US units, as NEC never bothered to release it here. The PAL TG16 are supposedly units modded by and sold by big importers. Is that correct? So basically you unmodded the thing?

Or was there a specific PAL run after all?