Gamecoding in machinecode on a ZX81.

[dr beep]

upkey loops until no key is pressed

nokey loops as long no key is pressed

[MrVertigo]

So we use both routines together in the code?

[dr beep]

So we use both routines together in the code?

Yes or you can't keep up with the speed

[MrVertigo]

Thank you!

[salvacam]

I don't know if it has already been mentioned. I haven't read the whole thread yet.

Code: Select all

gamecode 
	ld a,63
showa	ld (screen),a			
	dec a
	jr nz,showa
	jr gamecode

I get an error when trying to compile this change. Label not found: screen
I have to put the screen label here for it to work

Code: Select all

screen
	block 20,128		; BLOCK places 20x character 128,inverted space
	db 118