Re: need info about Laser 128EX

["Frank Townsend" <ftownsen@iamdigex.net>]

Patrick

Laser made an Expansion Box for the 128 models that contained two slots.  It
plugged into the 50 pin connector on the side of the machine opposite the
disk drive.

The INT/EXT PORT 7 selects either the 3.5 drive or allows slot 7 on the
expansion box.

The INT/EXT PORT 5 selects either the internal expansion RAM, or allows slot
5 on the expansion box.

PR#5 activates the expansion RAM.  It can be used as a RAM drive as with an
Apple II memory card.


"Patrick Schaefer" <PSchaefer@epost.de> wrote in message
3C20E0DB.7D606EDC@epost.de">news:3C20E0DB.7D606EDC@epost.de...
> I just picked up a Laser 128EX //c clone. This machine has a memory card
> inside that holds 1MB RAM. Now I need a manual or something like this to
> access its extra features.
>
> How do I access the RAM expansion? The RAMworks way (many AuxMems in
> parallel) or the Saturn way (many LCs in parallel)? ProDOS 1.1.1
> recognizes a /RAM5 volume with 256k, but this is only a quarter of the
> capacity.
>
> I figured out that the missing switch on the bottom changes the video
> timing from 60Hz NTSC to 50Hz NTSC. Now I get color :-)
> What are the other two switches for? They are labeled "External Slot
> 5/7" enable". What is "internal" slot 5, 7?
>
> Does the expansion connector accept a single Apple II interface card or
> do I need this expansion box?
>
> What kind of drives can be connected to the Disk port? Disk //c, Unidisk
> or Apple 3.5?
>
> What's the purpose of these function keys F1..F10? Holding F1 while
> pressing ctrl-Reset seems to switch to a faster CPU speed. BREAK seems
> to send a ctrl-C, PAUSE a ctrl-S.
>
> Are there more gimmicks in this machine which I didn't recognize yet?
> Unfortunately all these "virtual computer museum" sites just show a
> photo of the computer, but no manual or FAQ.
>
> TIA
> Patrick