Zx printer example pattern code

[Lostboys]

Hi
I have just typed in (several times) one of the small basic programs listed in the zx printer manual, it’s supposed to create circles (example code 3), but nothing happens when I hit the run button, what have I typed wrong that I can’t see, the only thing I wasn’t sure on was the PI, I can’t find that expression on the keyboard so typed it manually.

Please see screenshots

[Fruitcake]

the only thing I wasn’t sure on was the PI, I can’t find that expression on the keyboard so typed it manually.

PI is available under key M, shown as the Greek symbol on the keyboard and not spelled out.

[Lostboys]

the only thing I wasn’t sure on was the PI, I can’t find that expression on the keyboard so typed it manually.

PI is available under key M, shown as the Greek symbol on the keyboard and not spelled out.

Brilliant, never looked for symbol, just pi.
Thank you

[Fruitcake]

I wonder if it caused a lot of confusion at the time, hence the switch to "PI" on the Spectrum keyboard...

[Lostboys]

I wonder if it caused a lot of confusion at the time, hence the switch to "PI" on the Spectrum keyboard...

I'm not sure, maybe its just me not looking for Greek letters

[XavSnap]

pi.JPG (36.04 KiB) Viewed 1930 times

On the Zx81: "П"=PI ; SHIFT+New-Line, then "M" key.

On the Spectrum "CTRL SHIFT"+"CAPS SHIFT", then "M" key.

Or add LET PI=3.1416

[Lostboys]

Thank you XavSnap , very useful

[1024MAK]

Or add LET PI=3.1416

<Warning: British “humour” approaching…>

Now that's not very sporting Some would even go so far, as to call it cheating! Having a normal variable impersonating a well known constant. Whatever next!

If you are going to fake it, use 355/113

Mark

[Lostboys]

Or add LET PI=3.1416

<Warning: British “humour” approaching…>

Now that's not very sporting Some would even go so far, as to call it cheating! Having a normal variable impersonating a well known constant. Whatever next!

If you are going to fake it, use 355/113

Mark

Absolutely awful

[XavSnap]

<Warning: French “humour” approaching…>

3.14159 and any peanut ...

Can be easily rounded to 3.14... to display a fat circle on the zx81's screen !

Cap0160.jpg (3.14 KiB) Viewed 1873 times

Or... PI=3...

Cap0163.jpg (3.12 KiB) Viewed 1873 times

Warning : crappy circle !