I think NOT PI should = faster than PI-PI
& maybe CODE "$" faster than VAL "35"
LET A = A + A faster than A * 2
IF NOT A THEN faster than IF A <>0 THEN
0 = NOT PI
1 = SGN PI
3 = INT PI
Text within " " may include full words, press key for THEN & then other keys & delete THEN if not needed.
Search found 6 matches
- Sun Nov 22, 2015 10:58 pm
- Forum: ZX BASIC
- Topic: Tricks in BASIC
- Replies: 54
- Views: 114234
Re: Joystick.
I've 1, = Kemston type, (IN 31, machine code on ZX81), no out-side, either + plug or joystick's wires.
- Fri Oct 16, 2015 11:42 am
- Forum: ZX BASIC
- Topic: A 24x34 XXL Display... My Demo is ready!
- Replies: 9
- Views: 12346
Re: A 24x34 XXL Display... My Demo is ready!
Just wondering if 40 across possible? or is it that the ZX81 not that fast? I was reading about ZX80 @ hotel & now know that in the same village some 1'd SuperBrain computer, which has 40 across, but @ the time I didn't've £1000+ to buy 1.
- Thu Oct 15, 2015 4:20 pm
- Forum: ZX BASIC
- Topic: Tricks in BASIC
- Replies: 54
- Views: 114234
Re: Tricks in BASIC
NOT PI =0
SGN PI =1
INT PI =3
SAVE maybe included in program, then after loading from tape it carries on, so if you'd typed LET A=0 before then it'll still =0.
SGN PI =1
INT PI =3
SAVE maybe included in program, then after loading from tape it carries on, so if you'd typed LET A=0 before then it'll still =0.
- Thu Oct 15, 2015 4:01 pm
- Forum: ZX BASIC
- Topic: 1Kb programs???
- Replies: 11
- Views: 20171
Re: 1Kb programs???
Out of 1K there = also the screen, if nothing on it = 25 new-lines bytes, + something there, & uses 1 byte from left for each space there.
- Thu Oct 15, 2015 3:21 pm
- Forum: ZX BASIC
- Topic: A 24x34 XXL Display... My Demo is ready!
- Replies: 9
- Views: 12346
Re: A 24x34 XXL Display... My Demo is ready!
I got a 33rd character on screen of my ZX81 by poking end-of-line 1+ something else, & always wondered if more than 32= possible.