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does the jupiter ace do pixel exact character printing?
Posted: Fri Nov 25, 2022 3:45 pm
by the7778
all of the characters seem to move in 8 pixel squares. was there a way or was the jupiter ace capable of moving in single pixel jumps? i can see from a plotting demo that it can draw lines, circles, etc.
i know this could probably done using bit shifting but could it be done natively?
Re: does the jupiter ace do pixel exact character printing?
Posted: Fri Nov 25, 2022 5:06 pm
by 1024MAK
It has a character mapped display. The video RAM is only 1K bytes.
A layout is
here.
Mark
Re: does the jupiter ace do pixel exact character printing?
Posted: Fri Nov 25, 2022 5:14 pm
by the7778
1024MAK wrote: ↑Fri Nov 25, 2022 5:06 pm
It has a character mapped display. The video RAM is only 1K bytes.
A layout is
here.
Mark
so no then? i guess you would have to use bit shifting
Re: does the jupiter ace do pixel exact character printing?
Posted: Fri Nov 25, 2022 5:59 pm
by 1024MAK
You can I believe redefine the pixel grid for each character. The total RAM for the character pixel data is 1K bytes (this is in addition to the character mapped layout video RAM). Think of it as user defined characters (UDG).
But no, it does not have true bit mapped graphics like a ZX81 hi-res display or a ZX Spectrum.
Mark