[Amforth] Waking up a dormant forum :-)

[Enoch <ix...@ho...>]

Hello AmForth-ers,

Can somebody give me good reasons why we should not convert words/*.asm
implementations (as much as possible) from VM assembly to AVR
assembly. 

For example:

; ( a-addr1 -- a-addr2 ) 
; Arithmetics
; add the size of an address-unit to a-addr1
VE_CELLPLUS:
    .dw $ff05
    .db "cell+",0
    .dw VE_HEAD
    .set VE_HEAD = VE_CELLPLUS

Current implementation:
=======================

XT_CELLPLUS:
    .dw DO_COLON
PFA_CELLPLUS:
.if CELLSIZE == 2 ;
    .dw XT_1PLUS
    .dw XT_1PLUS
.else
    .dw XT_DOLITERAL
    .dw CELLSIZE
    .dw XT_PLUS
.endif
    .dw XT_EXIT


Suggested implementation:
=========================

XT_CELLPLUS: .dw pc + 1
  adiw tosl, CELLSIZE
  jmp_ DO_NEXT


There are two good reasons to prefer the AVR implementation:

1. Speed (10x faster?)
2. Ease of debugging through the Studio.

Comments? [flames :-)]

Thanks, Enoch.