Hello world/Line printer: Difference between revisions

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 <lang Forth>\ No operating system, embedded device, printer output example
-defer emit                                   \ emit is created as a place holder
+defer emit                                   \ deferred words in Forth are like virtual functions but easier to use
 : type ( addr count -- )                     \ type a string uses emit
        bounds ?do  i c@ emit   loop ;        \ type is used by ."   (see usage examples below)
+HEX
 : CR   ( -- )  0A emit 0D emit ;             \ send a carriage return, linefeed pair with emit
 \ memory mapped I/O addresses for the printer port
-HEX
 B02E   constant scsr                         \ serial control status register
 B02F   constant scdr                         \ serial control data register