Re: Apple II Video Generator

[Kevin <kevin@hackaday.com>]

ugh stupid google ...

let me confuse you some more

10 HGR2
20 HCOLOR = 2
30 HPLOT 0,0
40 CALL -3082 

omit that part, I just hit enter while editing the message, its the same, I thought I saw another waveform packed in there but it was just noise.

>Let's talk about luma wave while color burst is NOT enabled.
>How do NTSC monitor interpret square wave into monochrome?  I suspect all 15 >colors run at 7 MHz as true grayscale as monochrome.

>If NTSC monitor's frequency is higher enough to sustain 14 MHz instead of 7 >MHz, then grayscale does not show and true black & white monochrome shows.

>Are you positive sure monochrome does not use luma wave?

>What is the filter name do NTSC monitor use to display grayscale as monochrome?

its pretty simple, NTSC is a analog signal, the apple is sending out a digital signal so its either on or off, thus a black or white only mono signal. In normal video applications that voltage can be anywhere it wants to be between black and white, giving shades of grey.