From a76977af62010a392c16010c367185e61e856ffe Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Wed, 30 Oct 2019 20:04:56 +0100 Subject: mv to docs --- buzzard/help.th | 54 ------------------------------------------------------ 1 file changed, 54 deletions(-) delete mode 100644 buzzard/help.th (limited to 'buzzard/help.th') diff --git a/buzzard/help.th b/buzzard/help.th deleted file mode 100644 index 7afab27..0000000 --- a/buzzard/help.th +++ /dev/null @@ -1,54 +0,0 @@ -: help key ( flush the carriage return form the input buffer ) - -" The following are the standard known words; words marked with (*) are -immediate words, which cannot be used from command mode, but only in -word definitions. Words marked by (**) declare new words, so are always -followed by the new word. - - ! @ fetch, store - + - * / mod standard arithmetic operations - = < > <= >= standard comparison operations - - not boolean not of top of stack - logical turn top of stack into 0 or 1 - - dup over duplicate the top of stack or second of stack - swap drop reverse top two elements or drop topmost - - inc dec increment/decrement the value at address from stack - add add a value from 2nd of stack into address from top - - echo key output character from, or input to, top of stack - . # print out number on top of stack without/with cr - cr print a carriage return - -[more]" key -" (**) var declare variable with initial value taken from stack -(**) constant declare constant with initial value taken from stack -(**) array declare an array with size taken from stack - -(*) if...else...then FORTH branching construct -(*) do...loop FORTH looping construct - i j loop values (not variables) - - print print the string pointed to on screen - -(*)(**) : declare a new THIRD word -(*) declare a data types compile-time and run-time -(*) ; terminate a word definition - -[more]" key -" Advanced words: - here current location in dictionary - h pointer into dictionary - r pointer to return stack - fromr tor pop a value from or to the return stack - - , write the top of stack to dictionary - ' store the address of the following word on the stack - allot leave space on the dictionary - - :: compile a ':' header - [ switch into command mode - ] continue doing : definitions -" ; -- cgit v1.2.3