Double Height

Double-height





Paul Evans,


Clapton-in-Gordano,


Avon.





This program produces double-height characters from a 48K


Spectrum.


Line 5 changes RAMTOP to reseerve memory for the new


character sets. There are two new sets, one for the top


half of each character, and one for the bottom half.


Line 10 to 110 load the two character sets above RAMTOP.


This part of the program only needs to be run when the


program is loaded: it does not have to be run each time a


double-height character is printed.


Lines 9800 to 9920 print out text contained in a$ in


double-height characters. Note that a$ should contain only


ASCII characters, i.e., those with a value less than 128.


If you own a 16K Spectrum the following changes have to


be made: 63830 in line 5 has to be altered to 31062; 63831


in lines 100 and 9820 changes to 31063; and 64599 in line


9830 changes to 31831. To print the text loaded into a$


type GO SUB 9800.