Sinclair ZX80 / ZX81 / Z88 Forums

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

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?

mrtinb wrote: ↑Mon Oct 03, 2022 5:26 pm Is it this you are looking for?

viewtopic.php?t=1441

many thanks. any idea where the udg pattern utility is?

many thanks.

i need to know how it handles the large 'eye' sprite in the demo. i cant see anything in the basic listing that will do this. so im guessing its in code somewhere? or in a dimensional array. anyway a manual would be useful...

its been 2 days now?

i noticed the zx97 rom in there, will this work with an emulator?

same as last question, really. only this time i want to mirror an 8 bit decimal number

ok, ty


and what about mirroring?

so one that has a better user interface?