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amforth 3.6

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Publisher Old version

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September 25 2012

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amforth 3.6


Description

amforth is a compact forth interpreter and compiler. amforth is a compact forth interpreter and compiler. amforth project is implemented in assembly language and forth himself. This is not a cons-compiler.amforth implements an elegant ans94 out with some missing words and some words from the sets. Amforth word extension is designed to run on Atmel ATmega processors with high-RAM, Flash and EEPROM. It is a pure 16-bit etc.. It uses the thread model indirectly. It works interactivly the MC via the serial interface (usart0). The use of double operands cell is removed completely. They may be added later, if the structure needed.Flash +------------------ 0000 --------------+| vectors d interruption | | |+------------------ 0026 --------------+| initialization code | | routines of interrupt | | "colon" dictionary | | | | LATEST: ||~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~|+--- ---------- Section nrww -----------+| inner interpreter (docol, next) | | "primitive" Dictionary | | Link to "two points" dictionary | + - --------- flashend -----------------+ The flash contains both the inner interpreter, and the entire dictionary. New words are compiled directly into Flash. The dictionary is divided into two parts. One contains all the assembler (primitive) words such as Next and DOCOL. This part is located at the end of the flash area.The other part contains the codewords as colon definitions. This comes at the beginning of the flash. The reason for this split is that the SPM instruction is used to compile new definitions directly into the flash instruction can be called from an area nrww flash (booloader area). To use this, the most basic routines of the fourth system must be located in the nrww section.RAM +--------------- 0000 --------- - -------+| 0-31: Register set | | 31-59: space io |+--------------------- ---- -------------+| 60-84: USART buffer | | 84 .. : TIB, PAD, HLD buffer | | HEAP: beginning of the space variable | | | | ^ | | | | | stack data growth downward |+---------- ramsize -- $ 80 ----- --------|| ^ | | | | | return stack, increasing the size of the RAM down |+---------- ----- ---------- --- + TIB is currently 80 bytes long, TBP and HLD 16 bytes.


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    Amforth | Amforth 3.6 | Amforth Free Download | Amforth Reviews | Download Amforth

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    Next/Pre