notes

   1 FASM:
   2 - https://flatassembler.net/docs.php?article=fasmg (Introduction)
   3 - https://flatassembler.net/docs.php?article=fasmg_manual (Manual)
   4 - https://flatassembler.net/docs.php?article=manual (Other manual)
   5
   6 JONESFORTH:
   7 - https://github.com/nornagon/jonesforth/blob/master/jonesforth.S
   8
   9 # Notes on implementation
  10
  11 ## Dictionary
  12
  13 In Forth, words are stored in a dictionary. The dictionary is a linked list whose entries look like this:
  14     +------------------------+--------+---------- - - - - +----------- - - - -
  15     | LINK POINTER           | LENGTH/| NAME              | DEFINITION
  16     |                        | FLAGS  |                   |
  17     +--- (4 bytes) ----------+- byte -+- n bytes  - - - - +----------- - - - -
  18 For example, DOUBLE and QUADRUPLE may be stored like this:
  19       pointer to previous word
  20        ^
  21        |
  22     +--|------+---+---+---+---+---+---+---+---+------------- - - - -
  23     | LINK    | 6 | D | O | U | B | L | E | 0 | (definition ...)
  24     +---------+---+---+---+---+---+---+---+---+------------- - - - -
  25        ^       len                         padding
  26        |
  27     +--|------+---+---+---+---+---+---+---+---+---+---+---+---+------------- - - - -
  28     | LINK    | 9 | Q | U | A | D | R | U | P | L | E | 0 | 0 | (definition ...)
  29     +---------+---+---+---+---+---+---+---+---+---+---+---+---+------------- - - - -
  30        ^       len                                     padding
  31        |
  32        |
  33   LATEST
  34 The Forth variable LATEST contains a pointer to the most recently defined word.
  35