Hello Ned,

>>Remember, you have two shift registers: the I2C/SPI one and the
>>UART. Either or both could be used to produce a faster bit stream.

     are you sure? How could I manipulate the start/stop bits?

>>Plus, you can get a PIC to run at 40MHz (I'd use an 18F).

     I think bit banging is possible:
        Timing for 160 pixels on a line: 52us/160 = 325ns
     But full graphics can't be made on a PIC18F252:
        RAM usage: (160x128)/8 = 2560bytes

     It would be a lot of effort. I would preffer a ready made solution.
Phillips have some OSD generator chips, but I can't find it on any
store. ST have the STV5730, it could be an option.

     Best regards,

     Brusque






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Edson Brusque                 C.I.Tronics Lighting Designers Ltda
Research and Development               Blumenau  -  SC  -  Brazil
Say NO to HTML mail                          www.citronics.com.br
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