[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: AACP - Apple-to-Apple Copy

On 2009-08-31 17:40:24 -0500, "Michael J. Mahon" <mjmahon@aol.com> said:


D. Finnigan wrote:

On 2009-08-31 14:28:57 -0500, "Michael J. Mahon" <mjmahon@aol.com> said:


If the receiving machine is essentially EXECing it, then carriage
returns will require enough following NULs to allow the Applesoft
interpreter time to tokenize and store each line.
That's what caused the slow-down when I tried it. I was using PR#2 on the IIgs and IN#2 on the //e. Nearly took me an hour of fiddloing to get the whole program intact, and afterward, I thought about making an automated program to transfer between Apples. 

One approach that would be "low impact" would be to write a tiny
intercept routine for COUT that performed a programmed time delay
after each CR.  That way, all the other characters could go at top
speed (as long as only the CR caused the receiving machine to scroll).


That's a nice tidy solution.
On a semi-related note, there was a little machine language code listed in Call-Apple (1978) and it was prefixed by something like "Got one of the new Apples with silent keys? Input this routine and your keys will clack away all night" I've never actually typed it in, but I suppose that it clicked the speaker with each key-press. 

... Ok, that was totally non-related. ;-)
The only thing keeping me from trying Nadanet is having to build the part. The most I have ever done with the game socket is poke two wires in the annunciators, one to a green LED, the other to a red LED and move a joystick up to turn on the red, and move it down to turn on the green LED, and have the state displayed on-screen all with Applesoft. I was impressed, anyway. 

A couple of current-limiting resistors would be good, too.  ;-)
There probably were some. I got this whole set of electronic things for kids aged 10-14 or so. It is a board with a bunch of transistors, resistors, photo-resistor, diodes, leds, 9v batt, quite a few wires of varying lengths, and many other fun little electronic components. A booklet came with it which told how to build different projects going from things like a lie-detector, all the way to a transistor radio. Anyway, I got that about 3 or more years ago as a gift, but got it out again last summer when I realized that I could poke the wires into my Apple IIgs and then use Applesoft to get input/output and make more fun projects. So far, I have not fried any components.... yet! :-0 




You may be amused to hear that prior to the //e, Apple II annunciators
could directly drive Apple II pushbutton inputs, so the first version
of NadaNet was *exactly* a length of twisted pair with the ends inserted
into a pushbutton and annunciator (the other wire was ground).  In fact,
that's why I called it *Nada* Net, since nothing but wire was needed for
a small network.
Yes, I remember reading this. IIRC, you went on to say that Apple added some extra resistors or something in an attempt to fix the annunciators, but in the process of doing so, removed other functionality. You suggested snipping them out. 





The little buffers on the adapter preserve the logical characteristics
of a piece of wire while beefing up the drive capability so that dozens
of machines can be on a net, even the harder-to-drive Apples.


Looks like a trip to the Radio Shack for me, then!


Or you can order a pair through Bill Garber:

www.garberstreet.com/Nadanet.html
That's too easy. :-) I need to get experience making electronic circuits and things anyway. 



The pre-built adapters are on a small PC board, and don't require
soldering.  The homebuilt adapters are even smaller, but take some
soldering and dexterity.  ;-)


Good. I need practice.