No Hard Mod yet, but great news !!!
Dear All,
just a follow up, The tech that was going to do the replacement is still unavailable, so I had plenty of time to work on my Argentinean version of PALMOD.
I used the latest source i found (3.2) and started playing arround in preparation for when the tuner get's swap.
The tech mantioned to me a few times that he really did not see the point in swapping the units as PAL-N and NTSC are pretty close to each other (when the transform a TV or VCR from PAL-N to NTSC, they only change the circuity sligtly do the tunner uses a diferent set of crystals).
I was playing arround, trying to get the best configuration, when i found (in the SAA7114 datasheet) that subaddress 0x0e, bits 6 to 4 would allow me to specifiy the TV standard
Quote:
D[6:4] color standard selection CSTD[2:0]
000 50 Hz/625 lines: PAL BGDHI (4.43 MHz)
60 Hz/525 lines: NTSC M (3.58 MHz)
001 50 Hz/625 lines: NTSC 4.43 (50 Hz)
60 Hz/525 lines: PAL 4.43 (60 Hz)
010 50 Hz/625 lines: combination-PAL N (3.58 MHz)
60 Hz/525 lines: NTSC 4.43 (60 Hz)
011 50 Hz/625 lines: NTSC N (3.58 MHz)
60 Hz/525 lines: PAL M (3.58 MHz)
100 50 Hz/625 lines: reserved
60 Hz/525 lines: NTSC-Japan (3.58 MHz)
101 50 Hz/625 lines: SECAM
60 Hz/525 lines: reserved
110 reserved; do not use
111 reserved; do not use
"This can not work !!!!, o can it ???" I figured that worst case scenario, this would kill the tuner ... and I was planning to change it anyway, so I did the change, compile the version, uploaded to the Tivo and reboot it ... playing that iw was not going to kill it.
Quote:
iicw1(VIDEO_DECODER, CHROMINANCE_CONTROL_1 , 0x22); // set PAL N
Guess what ???? IT WORKS !!!!!!! :D I have a beautifull color image !!!!!
I still have a long way to go ... I can only get 1/3 of my local channels (I need to find the correct frecuency range for VHF-L/H and UHF for this NTSC tuner), I have no audio at all, and the PAL-N composite output from the Tivo Looks bad in some of my TVs).
I will continue to experiment this path befor going the haardware route ...
Still, I'm a happy camper.
Best Regards to all, Marianok.
P.S.: I hope no one minds if i x-post this to the Software area, but I'm sure someone there will be interested