Hi guys. I'm just starting out (being very happy about a program displaying the ASCII charset; it's only 18 bytes!!!).

In the tutorial, I have learned how to use the interrupt 21h to display something in the console. But how to read something from the console? I need exactly one char, that means, when the user types one letter, the program should immediately continue without waiting for the user to press "Enter" or stuff like that.

Do you know how to do that (until "Appendix A" is finished).

you can use the bios interrupt 16h to do that
you just make:

this int 16h waits for a key to be presed
after any key(except control keys like alt,ctrl,shift) is
presed this int returns the key code in ah and the char in al
so you can use it to now what key was pressed.

Next time you are unsure what function to use or how to load it you can check:

http://www.uv.tietgen.dk/staff/mlha/PC/Prog/ASM/INT/

Lord of Destiny,
there is also standard input, input string, in dos, or you can make yourself own input functions using bios interrupt, or even via keyboard port $60
calling dos functions - input string

Input and Output String



nice set of code collections,
additionally i whould note the usage of "Ralph Browns List of Interrupt files"

You do not want to input whole string, just one character. This is my personal favorite way to to it, if just once:



Ralf Brown's Interrupt files are at http://www.ctyme.com/rbrown.htm. You should find the Interrupt> 21 list most helpful. READ or CHARACTER INPUT is likely what you search for.

Thank you for your support.