Re: Apple II vs. Apple II+

["Latch" <latch@itup.com>]

As an old cracker from way back, there was another important difference
between the two.  On the ][, the RESET was hard-coded, while the ][+ had a
vector address so you could trap the key.


"Linards Ticmanis" <ticmanis@coli.uni-sb.de> wrote in message
3C062C3C.3040902@coli.uni-sb.de">news:3C062C3C.3040902@coli.uni-sb.de...
> > Just a quick question!
> >
> > I'm looking at an Apple II (at least, that's what the cover says).. not
II+,
> > etc.  But I don't believe it yet.  Is there any easy way to distinguish
an
> > Apple II from an Apple II+ (this one is missing the bottom sticker, if
there
> > ever was one)?
>
> You should plug it in and turn it on, ideally without any cards plugged
> into the slots. (Open the cover , touch the gold-colored power supply
> casing to discharge yourself of static, and carefully pull them out
> *while the machine is plugged in, but with the power still turned off*,
> after noting which one goes where.)
>
> Then if the screen says "APPLE II" and then ">" where the cursor is, it
> is an A2 with Integer BASIC and new monitor ROM. If it says "APPLE II"
> and then "]" it is an A2+ with Applesoft BASIC and new monitor ROM. If
> it says "*" in the last line and has garbage on the screen above that,
> it is a machine with an old monitor ROM. In this case, hold down CTRL
> and press B, then release CTRL and press RETURN. Then interpret the
> prompt character as above.
>
> If it says only garbage and no prompt character shows up after turning
> the power on, it has an old-style non-automatic RESET circuit. Press
> RESET then go on as above.
>
> The only hard-and-fast difference between the A2 and the A2+ is the
> BASIC version. So presumably someone might have swapped the ROMs to pull
> your leg; I don't think there is any other surefire way of telling the
> difference.