Search found 1507 matches

by Paul
Sat Mar 16, 2024 10:16 pm
Forum: Development
Topic: JOY81 - Programmable Joystick Interface for ZX81
Replies: 102
Views: 61303

Re: JOY81 - Programmable Joystick Interface for ZX81

I just ordered 20 for europe.
If no one is offering for UK I'm willing to send there too. No sending to rest of the world.
Prices when I received them.
by Paul
Fri Mar 15, 2024 10:12 am
Forum: Hardware
Topic: Atari joystick without ZXpand+
Replies: 33
Views: 728

Re: Atari joystick without ZXpand+

Of that I'm not Shure.
But if mazogs didn't work without altering then it doesn't look into the systemvariable LASTK (which inkey does) but either uses the ROM call or own routines.
by Paul
Fri Mar 15, 2024 9:11 am
Forum: Hardware
Topic: Atari joystick without ZXpand+
Replies: 33
Views: 728

Re: Atari joystick without ZXpand+

Inkey can only use single keys. But the ROM reads the keyboard by eight IN commands. Each can have five keys detected which makes the 40 keys. Games can do the same. But even with inkey you can use more directions. If the game takes T for up and V for down, F for left and G for right then R might be...
by Paul
Fri Mar 15, 2024 8:19 am
Forum: Hardware
Topic: Atari joystick without ZXpand+
Replies: 33
Views: 728

Re: Atari joystick without ZXpand+

Joy81 is no miracle and we can make new boards if you're interested (or others as well)
It also offers multiple key presses and diagonal keys not only up and down.
by Paul
Fri Mar 15, 2024 8:18 am
Forum: Hardware
Topic: Atari joystick without ZXpand+
Replies: 33
Views: 728

Re: Atari joystick without ZXpand+

As long as games use the inkey equivalent they don't need to be rewritten. That's what zxpand offers to the zeddy or otherwise it's own API.
Joy81 on the other hand implemented the exact keyboard behaviour and so games need not be rewritten.
by Paul
Thu Mar 14, 2024 3:49 pm
Forum: Hardware
Topic: Atari joystick without ZXpand+
Replies: 33
Views: 728

Re: Atari joystick without ZXpand+

JOY81 - Programmable Joystick Interface for ZX81
Can be found in this forum.
https://www.sinclairzxworld.com/viewtop ... ilit=Joy81
by Paul
Tue Mar 12, 2024 1:28 pm
Forum: Hardware
Topic: Spectrum modded / composite question
Replies: 16
Views: 562

Re: Spectrum modded / composite question

I'm not Shure. Two or three posts.
Don't worry, I read them anyway :mrgreen:
It just takes some time if I am at work.
by Paul
Tue Mar 12, 2024 1:10 pm
Forum: Hardware
Topic: Spectrum modded / composite question
Replies: 16
Views: 562

Re: Spectrum modded / composite question

My wife told me to dump everything I hadn't touched within two years.
Now she is my ex wife :mrgreen:
by Paul
Thu Feb 29, 2024 3:44 pm
Forum: Hardware
Topic: ZX81 toZX80 conversion.
Replies: 22
Views: 1637

Re: ZX81 toZX80 conversion.

There is always a little uncertainty which port needs to be connected to which cassette recorder connector :lol:
by Paul
Thu Feb 29, 2024 3:20 pm
Forum: Hardware
Topic: ZX81 toZX80 conversion.
Replies: 22
Views: 1637

Re: ZX81 toZX80 conversion.

Well, if you take away the cooling pad and desolder the modulator you might be able to put the ZX81 PCB upside down into the top right corner the connections could be in the correct order for power and tape. If you resolder the modulator to the bottom side of the PCB it might nearly line up with the...