2011-10-30, 07:09 PM
(This post was last modified: 2021-01-11, 12:05 PM by boriel.
Edit Reason: Fix URL
)
You should have a look at Chapter 18 of the Sinclair ZX Spectrum manual.
http://www.worldofspectrum.org/ZXBasicMa...hap18.html
http://www.worldofspectrum.org/ZXBasicMa...hap18.html

