Re: Build your own Forth for microchip PIC (Episode 839)

In article <1sxqxtculdr4m$.1ly164xd3gegw$.dlg@xxxxxxxxxx>,
Coos Haak <chforth@xxxxxxxxx> wrote:
Op Sat, 23 Jun 2007 18:25:20 -0500 schreef none:

I've asked about a primitive kernel to implement Forth upon. Instead of
looking at existing examples maybe a better approach is to post a
description of my current 16F NPCI bytecode and discuss.
minus ; 4 - minus ( n1 n2 -- n2 - n1 )

I think you have the stack reversed from the normal Forth notation
( n1 n2 -- n1-n2 )
Push n1 first, than n2, and subtracht n2 from n1.

You are correct. My NPCI compiler converts infix to postfix
using a operator stack. Operands pass through unmodified.

I misunderstood where the TOS is. I just finished reading the gforth
manual. TOS is furthest to the right, not the left. Got it.

BTW the primitives do implement the proper stack effect. I get a D- for
listing them incorrectly. Sorry.

BAJ
.

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