Sinclair ZX80 / ZX81 / Z88 Forums

Brilliant mods!

USB power sounds ideal. Are the fuse and zener required for that to work?

Thanks!

IOS emulator is cool! Happy to contribute our "Zonkey Kong" to it when we have it done (by end of Oct I think?)

Thanks.. debugging the elevator. I've got variables for both elevator and player, so rather than do in either move routine, this runs and does a compare on both variables. The player rides up, but stops early. Not sure why yet. When we have this in the can, I want to try my hand at hirez Robotron.

Thanks! That 1k Hi rez example is great - game premise is good too! Next thing I'd like to learn, if ya'll are willing to guide or example is how to do an object array. I'm assuming this is the best way to track multiple objects, and move them? In our Donkey Kong example (Zonkey Kong as we call it)....

I don't need it working, just would like a pretty one for the shelf. I dreamed of one as a kid, but they weren't sold here. Would like a nice looking one for the shelf - I'm in line for a NEXT in KS2!

TIA

Thanks Will do... - Where's the "new games" topic? Managed to get things working by moving the code around a little and just using the LD A,R and masking bits. Not toooo bad. Will def. check out other examples as I'll need better methods at some point. The result of all this will be a reasonable int...

Thanks... still getting same value if I call it in near succession. If I call further apart in the code it work fine though. Hmm.

So, I want to something very simple. I want a random int from 1-3 on the ZX-81 - In basic it might look like (RND *3)+1 - In Assembler, My understanding is would do this: - LD HL,$03 - CALL $0BED - LD A,L Then A would have my number in it. I've tried other methods like - or others using R: LD A,R LD...

Thanks, that helps..

Ultimately, I just want the hex codes that I can use to map onto the screen from assembly as an opening screen for a game we did for the zx-81. Just finishing up what we started 37 years ago, then will move on to some Spectrum Next programming

Hi,

I'm looking to create splash screen for a game me and a buddy did, and our art skills aren't great. Is there any sort of utility that will take a picture and turn it into a BW ZX compatible screen that we can grab the hex codes for?

Thanks!