Slightly OT: Old CRT displays vs. new LCD

Tony Duell ard at p850ug1.demon.co.uk
Mon Dec 3 17:26:55 CST 2007


> 
> Cameron Kaiser wrote:
> > ObClassicCmp: starting to see more Commodore users at festivals with LCD
> 
> How is that possible?  C64 is RGB 9-pin TTL...?

Is it? The C64 I have here (and indeed the P500 which has similar video 
circuitry) has an 8 pin DIN socket, carruying composite colour video and 
separate Y and C signals (similar to S-video). The C128 has that 
connector fo the 40 column output and a DE9 connecotr (CGA signals and 
pinout) for the 80 column chip (presumably that's why the Commodore 
monitor had both types of input).

Many LCD TVs and video projectors will at least accept the composite 
input. A year or so back i gave a talk to HPCC on the 7245 
printer/plotter (now that _is_ on-topic), and demonstrated it using an 
HP71 as the controller. For a laugh I suck my 80 column HPIL video 
interface on the HPIL loop, fed it into the composite input on the video 
projector that others were using with PC laptops and got a pefectly 
useable display. 

-tony


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