zx81

Help: ZX81 'BASIC' Peek function...

I need a way to find if the character ('<') has hit a wall (Black pixel Graphic) -On a ZX81 game. I'm been looking at another game... which uses code if peek(peek 16398 +256*peek 16399) = code "blackpixel graphic" then ... Which seems to work for them... Is this correct code? I'm not really knowledgable with addresses and getting m...

Help: ZX81 ‘BASIC’ Peek function…

I want to find the code of a character printed... This is the code: 10 Print AT 2,2; "T" 20 Let C=Peek(Peek 16398+256*Peek 16399) 30 Print Peek(C) It should just print the Code value of T I could later use: 40 Print Peek (Code C) Or something. But the 10-30 bit doesnt work. It always returns '0' -With different letters too: G,T...