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Article #2024Re: Simple crystal (4.43MHz - PAL) oscillator + PLL multiplier circuit wanted.
From: Jan Panteltje
Date: Mon, 05 Mar 2007 14:21
Date: Mon, 05 Mar 2007 14:21
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On a sunny day (Mon, 05 Mar 2007 14:19:25 +0100) it happened RenοΏ½ <rjz~nospam~@xs4all.nl> wrote in <a16ou2t6spegav4sp72un76qep6dvnulsv@4ax.com>: >On Mon, 05 Mar 2007 19:47:16 +1100, Lionel <usenet@imagenoir.com> >wrote: > >>er the subject line. I want to experiment with direct PAL video >>generation from a microcontroller > >In the dark recesses of my past, I remember owning a ZX80.... > >http://en.wikipedia.org/wiki/Sinclair_ZX80 I had one too, and it was BW. It had a Z80, at 3,58 Mhz or so, and a custom ship with the shift register in it. One of the best BASICS ever, the Z80 refresh register was also used for the display. It was followed by the ZX81 (Timex1000 in the US), and I still have the book Timex1000 / ZX81 ROM dissasembly by Dr Ian Logan and Dr Ohara. Even controlled an audio switcher with it.... ZX81 was BW too. Later came the Spectrum, never had one, but _that_ one was color I think.
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