From: john at
yoyodyne-propulsion.net
On Mon, Mar 19, 2012 at 4:17 PM, John Many Jars
<john at yoyodyne-propulsion.net> wrote:
On Mon, Mar 19, 2012 at 3:57 PM, Richard
<legalize at xmission.com> wrote:
> I saw some impressive Apple ][ FORTH demos in '86.
Been looking into that (now that I have the Internet). It's all stack
based and weird.
No wonder it's fast though...
--
Hi
If you want to fiddle with Forth, I believe Starting Forth is online now.
It is a fun book to go through and is applicable to most versions of Forth.
The exception might be the varies editors used with screens rather than
sequencial files. Most of the early ones such as found on the Apple II would
most likely be screens.
Stacks are not overly efficient on the 6502 but better than on the 8080.
Stack processors never seem to catch on too much, even though they are
fast. I have a 4MHz Novix chip that can do sorts faster in Forth than a
33 MHz 386 can do in machine code. Sorting 1K 16 bit integers in 19 ms.
Like many DSPs, it can combine several instructions in a single clock
cycle and operate 2 data busses at the same time.
Dwight