Message-ID: <202@zaphod.UUCP>
Date: Thu, 7-Mar-85 10:59:53 EST
Article-I.D.: zaphod.202
Posted: Thu Mar 7 10:59:53 1985
Date-Received: Sat, 9-Mar-85 07:00:53 EST
References: <8800@brl-tgr.ARPA>
Organization: Develcon Electronics, Saskatoon, SK
Lines: 58
> ........ It has a 25 X 80 LCD screen, along
> with Unix "artfully compressed" into 256K of ROM. It comes with a 3.5
> inch floppy, but no hard disk. Supposedly, there is some neat
> windowing software. Sounds wierd, but maybe good, although the ideas
> of Unix being compressed into 256K and having no hard disk scare me.
>
Our local H-P Office has loaned us one of their new Integrated Personal
Computers. This is the one with the unix based OS.
The screen is "Electroluminescent" (Plasma Panel). I'm not sure of the
exact number of pixels, but the resolution is incredibly fine.
The unix version is supposedly system 3, which is layered under (or
maybe around is a better word) the standard H-P micro OS, including
P.A.M. and other goodies. Although I haven't tried them, I understand
that the currently or soon to be released languages include C, Basic,
Pascal, Fortran and others.
The windowing features, from what I have seen are fairly powerful. One
can have multiple simultaneous windows, and activate any, switch windows
at will except where prohibited by specific sftw, etc.
An interesting item to note is that the root filesystem is resident in
ROM, device drivers, basic fonts, etc reside there also in appropriate
directories. As diskettes are swapped, the system updates its knowledge
of what is available and automatically "mounts" the new filesystem under
/. Since / resides on the ROM, and since there is RAM-DISC, it is very
easy to move applications from floppy into RAM. This means much greater
flexibility and ease of use.
One disappointment I had was that I managed to scrub one of the
apllication diskettes provided with the demo. I think what happened was
I wrote a file to /dev/internal since "internal" is the name used in
other H-P products to identify the internal printer. In this system it
means the built-in disk - probably as the raw device - so I likely wrote
over the first few physical blocks of the diskette. This is conjecture
based on what happened and what diagnostics would show. BTW, as you
might guess from the above, the IPC has a built in Laserjet printer -
tractor or friction feed.
Re configuration, it is my understanding that the system has the single
micro-floppy and 1 1/2 Meg RAM max. With external expansion ( I expect
via HP-IB) this memory will go to 5 Meg and additional disks can be
added. I saw no restrictions as to what kind of disk could be attached.
*****************
Sorry for the number of "AS I UNDERSTAND IT's" in here, but a new
product and therefore green salesmen always come out that way. Any
additions or corrections from others are welcome.
*****************
I wouldn't rush out to buy one tomorrow, but the product is definitely a
comer and worth keeping your eye on.
Dave Katz - Develcon Electronics Ltd.