🚀 go-pugleaf

Many people have written with the answer to this question, so
I thought I'd share it.

I (Nick Sayer <mrapple@quack.sac.ca.us>) wrote:

<I've managed to obtain at a rediculously low price
<a motherboard for the grand old video game "Robotron: 2084".
<I know it generates analog R, G, and B signals, and separate TTL
<horizontal and verticle sync outputs. Fine and dandy. Setting aside
<for the moment concerns about losing definition, is there a way
<(I know it won't be easy) to convert this signal into an NTSC
<format? Monochrome will do, by the way.

<If not, all is not lost. I know that the Apple IIgs monitor is an
<Analog RGB monitor, but it needs a composite sync signal. My bright
<idea is to send the TTL H and V sync into the control pins of a pair
<of CD4066 "digital switch" elements, whose inputs attach to
<a pair of pots, and outputs connect together and go to the
<composite sync output. Will this plan work?

Motorola makes a chip numbered MC1377 that converts Analog RGB
to NTSC or PAL. I have written to Motorola to get a data sheet.
Without having a data sheet, I'm not sure it's the answer, but
it is described as being an Analog RGB to NTSC converter. How
much more straightforward can it get?

Thanks to all those who replied. I am a happy camper.

-- 
Nick Sayer              |    Official Scapegoat for the    | RIP: Mel Blanc
mrapple@quack.sac.ca.us |      MC68HC11 Mailing List.      |   1908--1989
N6QQQ                   |    To subscribe, send mail to    |  May he never
209-952-5347 (Telebit)  | mc68hc11-request@quack.sac.ca.us |  be silenced.