Re: Forth in VHDL

From	rickman <gnuarm@gmail.com>
Newsgroups	comp.lang.forth
Subject	Re: Forth in VHDL
Date	2016-07-31 18:43 -0400
Organization	A noiseless patient Spider
Message-ID	<nnluug$din$1@dont-email.me> (permalink)
References	<nn3ti7$hte$1@dont-email.me> <nn3vdu$lp9$1@dont-email.me> <nnbbpr$8se$1@dont-email.me> <0da76832-2d1b-4ff3-911a-69c18bad6610@googlegroups.com>

Show all headers | View raw

On 7/28/2016 6:19 PM, Brad Eckert wrote:
> On Wednesday, July 27, 2016 at 7:16:48 PM UTC-7, rickman wrote:
>> I see he
>> used a large CASE statement for primitive words.  I'm not clear on how
>> the inner interpreter works through the XTs in a word definition for
>> words compiled into other words.  I suppose it is just a matter of
>> indexes into the dictionary (or pointers in C) but I don't see the code
>> he is using to manipulate them.
>
> It may be a token threaded Forth. You have at most 256 cases in the "switch" statement. For high level Forth, you have CALL and RET tokens.
>
> You can take a look at Fminus, a token threaded Forth I put on Sourceforge in 2007. It uses a VM generator to build the big switch statement and generate a bytecoded ROM. I'll probably rewrite it one of these days since now even I can't figure out some of the structures it uses.

For a token threaded Forth the primitives use fixed values, the tokens 
or in other words, machine commands of the virtual machine.  But Forth 
defined words are in the dictionary and there would need to be something 
to distinguish them, no?

-- 

Rick C

Thread

Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-24 22:29 -0400
  Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-24 23:01 -0400
    Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-24 23:05 -0400
      Re: Forth in VHDL Cecil Bayona <cbayona@cbayona.com> - 2016-07-24 22:25 -0500
        Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-25 00:08 -0400
          Re: Forth in VHDL Cecil Bayona <cbayona@cbayona.com> - 2016-07-24 23:57 -0500
            Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-25 01:22 -0400
              Re: Forth in VHDL Paul Rubin <no.email@nospam.invalid> - 2016-07-24 22:38 -0700
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-25 01:53 -0400
                Re: Forth in VHDL JUERGEN <epldfpga@aol.com> - 2016-07-25 05:31 -0700
                Re: Forth in VHDL JUERGEN <epldfpga@aol.com> - 2016-07-25 05:36 -0700
                Re: Forth in VHDL Richard Owlett <rowlett@cloud85.net> - 2016-07-25 08:14 -0500
                Re: Forth in VHDL JUERGEN <epldfpga@aol.com> - 2016-07-25 07:37 -0700
                Re: Forth in VHDL JUERGEN <epldfpga@aol.com> - 2016-07-25 08:01 -0700
              Re: Forth in VHDL Cecil Bayona <cbayona@cbayona.com> - 2016-07-25 14:11 -0500
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-25 17:39 -0400
                Re: Forth in VHDL Cecil Bayona <cbayona@cbayona.com> - 2016-07-25 18:01 -0500
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-25 19:40 -0400
                Re: Forth in VHDL Jan Coombs <jenfhaomndgfwutc@murmic.plus.com> - 2016-07-26 11:04 +0100
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-26 11:13 -0400
                Re: Forth in VHDL anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-26 16:00 +0000
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-26 12:58 -0400
                Re: Forth in VHDL anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-27 09:39 +0000
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-27 10:01 -0400
                Re: Forth in VHDL Jan Coombs <jenfhaomndgfwutc@murmic.plus.com> - 2016-07-27 22:46 +0100
                Re: Forth in VHDL JUERGEN <epldfpga@aol.com> - 2016-07-26 09:43 -0700
                Re: Forth in VHDL Jan Coombs <jenfhaomndgfwutc@murmic.plus.com> - 2016-07-28 09:12 +0100
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-28 05:04 -0400
                Re: Forth in VHDL JUERGEN <epldfpga@aol.com> - 2016-07-28 07:56 -0700
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-28 13:04 -0400
                Re: Forth in VHDL Jan Coombs <jenfhaomndgfwutc@murmic.plus.com> - 2016-08-02 12:21 +0100
                Re: Forth in VHDL JUERGEN <epldfpga@aol.com> - 2016-07-28 08:02 -0700
    Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-27 18:15 -0400
      Re: Forth in VHDL Brad Eckert <hwfwguy@gmail.com> - 2016-07-28 15:19 -0700
        Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-31 18:43 -0400
          Re: Forth in VHDL Paul Rubin <no.email@nospam.invalid> - 2016-07-31 17:10 -0700
  Re: Forth in VHDL Brad Eckert <hwfwguy@gmail.com> - 2016-07-24 20:08 -0700
    Re: Forth in VHDL Brad Eckert <hwfwguy@gmail.com> - 2016-07-24 20:33 -0700
      Re: Forth in VHDL Cecil Bayona <cbayona@cbayona.com> - 2016-07-24 22:58 -0500
        Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-25 00:17 -0400
          Re: Forth in VHDL Brad Eckert <hwfwguy@gmail.com> - 2016-07-25 10:02 -0700
            Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-25 14:13 -0400
              Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-25 14:17 -0400
              Re: Forth in VHDL Brad Eckert <hwfwguy@gmail.com> - 2016-07-25 15:04 -0700
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-25 19:28 -0400
                Re: Forth in VHDL Brad Eckert <hwfwguy@gmail.com> - 2016-07-25 17:20 -0700
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-25 23:07 -0400
                Re: Forth in VHDL Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-26 03:07 -0500
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-26 13:05 -0400
                Re: Forth in VHDL Brad Eckert <hwfwguy@gmail.com> - 2016-07-26 16:22 -0700
                Re: Forth in VHDL Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-27 03:57 -0500
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-27 10:34 -0400
                Re: Forth in VHDL Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-27 11:15 -0500
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-27 12:51 -0400
                Re: Forth in VHDL Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-27 16:12 -0500
                Re: Forth in VHDL "Elizabeth D. Rather" <erather@forth.com> - 2016-07-27 12:43 -1000
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-28 00:40 -0400
                Re: Forth in VHDL hughaguilar96@gmail.com - 2016-08-02 22:45 -0700
                Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-28 00:39 -0400
  Re: Forth in VHDL wzab01@gmail.com - 2016-07-25 01:48 -0700
  Re: Forth in VHDL JUERGEN <epldfpga@aol.com> - 2016-07-25 05:57 -0700
    Re: Forth in VHDL JUERGEN <epldfpga@aol.com> - 2016-07-25 06:02 -0700
    Re: Forth in VHDL Jan Coombs <jenfhaomndgfwutc@murmic.plus.com> - 2016-07-30 16:40 +0100
      Re: Forth in VHDL JUERGEN <epldfpga@aol.com> - 2016-08-01 08:58 -0700
    Re: Forth in VHDL rickman <gnuarm@gmail.com> - 2016-07-31 17:10 -0400
      Re: Forth in VHDL JUERGEN <epldfpga@aol.com> - 2016-08-01 09:02 -0700
  Re: Forth in VHDL Ilya Tarasov <ilya74.tarasov@gmail.com> - 2016-07-29 05:42 -0700

csiph-web