On compiling. (Was a way off topic subject)

[Gordon Henderson]

On Wed, 23 Jun 2021, Van Snyder via cctalk wrote:

> On Wed, 2021-06-23 at 13:36 -0400, Paul Koning via cctalk wrote:
>> Typical FORTH implementations are neat in that respect, since they
>> use a threaded code encoding that allows for fast and efficient
>> switching between threaded code (subroutine calls) and straight
>> machine code.
>
> I have a vague recollection of a story about a FORTH processor that put
> the addresses of the functions to be executed on the return-address
> stack (68000?) and then executed a RETURN instruction.

I saw this on the 6502 in Woz's Sweet-16 interpreter.

see e.g.

http://www.6502.org/source/interpreters/sweet16.htm#When_is_an_RTS_really_a_JSR_

I initialiy used this "trick" in my own little bytecode VM but it's 
somewhat slower than some other methods, but as usual the trade-off is 
code-size vs. speed...

Gordon