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From: Brent <bharrisnospam2391@vax2.winona.msus.edu>
Newsgroups: comp.sys.apple2
Subject: Re: Laser 128 (Again)
Date: Mon, 16 Nov 1998 19:14:40 -0600
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Supertimer wrote:
> 
> jacc7621@aol.com (JACC7621) wrote:
> 
> >thanks for the info, but does anyone know the pinoust for all the ports? I
> >don't have any manuals, and most of the ports are non-standard. Also, does
> >anyone know what is in slot 5? the prodos users disk says it is "used", and
> >slotscan just crashes. Thanks again.
> 
> Well, the two serial ports accept IIc serial cables.  If you want
> parallel, dunno (the parallel cable plugs into the serial ports
> and you flip a switch).
> 
> Similarly, the drive port uses Apple II smartport cables, same
> as the IIc, IIGS, Macintosh, IIe, etc.
> 
> The video port takes a standard IIGS monitor cable or it can
> take an LCD panel designed for the IIc (it can act as both
> a true RGB port like the IIGS or a dumb video port like the
> IIc).
> 
> So basically, just use the Apple II (mainly IIc) cables.
Actually, the parallel port is seperate from the serial port.  It is a
"nonstandard" 12 pin port.  It looks like this:
_______________________________________________
\                                             /
 \   .8   .7   .6   .5   .4   .3   .2   .1   /
  \                                         /
   \    .15  .14  .13  .12  .11  .10  .9   /
    \_____________________________________/

1. printer data bus   9. BUSY - from printer
2. printer data bus   10. PTRSTB - printer data strobe (active low)
3. printer data bus
4. printer data bus
5. printer data bus
6. printer data bus
7. printer data bus
8. printer data bus

Both the serial printer port and the parallel printer port share slot1.
You can select which one you wish to use with a switch that's on top of
the compter, next to the keyboard.

The Laser 128EX has a built in Memory expansion card, mapped to slot 5.
While the Laser 128 doesn't come with this card, it could (at one time)
be purchased seperately.  This card is Laster 128 specific, it's an
internal card, and can hold up to 1 meg of ram.

The slots are mapped out as follows:
Slot 0: 40-column display interface
Slot 1: Parallel or Serial printer interface
Slot 2: Serial communication interface
Slot 3: 80-column display interface
Slot 4: Mouse/Joystick port
Slot 5: Memory Expansion interface / or external expansion box
        (depends on which way you set the jumper)
Slot 6: 5.25" drive interface
Slot 7: 3.5" drive interface / or external expansion box
(I don't believe the Laser 128 supports 3.5 drives without an extra
card)
Note: The jumpers are located underneath the rom door on the bottom of
your computer


The 50 pin port on the left side of you machine is an expansion port. 
You can hook up an expansion box to this, and plug in up two two
standard apple II cards into this expansion box.  If you don't have the
expansion box, you can still plug any standard Apple II card into this
port.

Hope this helps.