KEY and EMIT are primarily for human I/O, which is only a minor part of my workbench computer's I/O; and even then, there still needs to be code to take care of the details of how to feed data to the LCD, scan the keypad, bring data in from a UART, etc.. If the newbie doesn't have those written and ...

It impacts Forth runtime performance, but has the advantage that it makes writing event-driven software in high-level Forth somewhat easier. I think you'll find its expressivity beneficial in real-world applications.

Here is the overhead in my NEXT for the zero overhead implementation:
pNEXT LDY ...

KEY can reliably return 0 as a valid character, particularly if you're using the console interface to receive a binary file. You really ought to be using KEY? to query whether or not a byte from standard input is available or not. This also significantly benefits the performance of multitasking ...

Is there a compact ROMable version of Forth?
I have been working on exactly that for the last 2.7 (3 in April) years.

What has kept me from publishing my own '02 Forth is that there are still a lot of fragments left that one particular company could claim a copyright on.
That is also my ...

Yes, that is the challenge, SRAM may hold on to the data.

How did the 10uF capacitor not bleed out on the power rail?

I suppose that I could place a circuit to bleed off the capacitor when the power is off.

The idea here is to not use any hardware other than ram. The 6502 simulator I am using always sets ram to 0's upon first start. Reset checks this location for 0 or not and then can decide where to go. In real ram, I have no such garuntee of an initial value upon power up.

Does anyone know of a software technique for distinguishing between cold and warm resets?

Assuming that the 6502 has a power on reset circuit, and a user key for issuing a reset, I would like the power on resets to vector to a cold start area and the user key resets vector to a warm start area of ...

The ZIP file for FIG on the Source Code page has two versions. The readme file says the following:

FIG6502.ASM is the original FIG listing, for a Rockwell native assembler.
FIG6502.ASX is my modified listing, which will assemble
with MAS65 macro cross assembler, available from
http://www2 ...