CPLD replacement for ZX8301

[lliont]

Tested it with (but with R4=330)

scart_con.png (7.37 KiB) Viewed 895 times

and got

(This small LCD TV I use just for testing is bad and darker on top than bottom so camera can't adjust brightness correctly, result is better live)

The only thing that remains to be determined is what to use for blanking signal, using just the csync works but it has some rare random very short periods of blank screen at the TV I tested it. Could be this stupid tv.
Use what QL scart cables use.

Maybe better change R88 to 47 Ohm in the above

One can also use a resistor mixer like the one on the pcb, more components but they 'll fit in the scart cable connector.

So if one doesn't need the BW video of pin 3 this is a solution, thanks tofro

[Cristian]

If I may leave a suggestion, I think one of the crucial colors to obtain is the orange (if possible!)

[lliont]

Here replaced one of the 2 blacks with light orange (4th bar) but this needs the pcb resistor mixer (2 bits per color) to be produced so the photo is from crt monitor and the composite video output. From my previous post's circuit this will look yellow.

Here with lowered monitor's brightness to look better in photo from crt

[Cristian]

Great result!

[ones' complement]

Great result!

But why is orange so appeeling? (no really, I'm not just taking the pith)

[NormanDunbar]

Outspanding pun!

[ones' complement]

Jape aside (no disrespect, Cristian), of course orange (& green, purple), are secondary colours in paint pigments, in light spectrum; magenta, yellow, cyan.

[lliont]

I don't know about the light spectrum but ZX Spectrum doesn't have orange

[XorA]

Scotland would be a much better place without Orange

[NormanDunbar]

Scotland would be a much better place without Orange

I see what you did there!