Toxic materials… ?

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When the fire department in Hessen has to deal with toxic materials, helps a database in computer computer.

For the firefighter accidents include toxic materials for everyday routine.
statistically occur every day on the streets of the federal republic of Germany five accidents in which endanger the groundwater chemical.

…

In a stored database about hazardous materials, the program then searches for the names and gives the firefighters notes as chemical best deal. In the danger-data database are approximately 1,350 different hazardous materials stored, as they are often transported over the road. All disclosures fit into a 16KB memory module of the pocket computer PC-1500.
About the small display or a separate printer gives the computer the name of the substance as well as a catalog of measures for the fight against the danger of.

…
Giftstoff001

PC-1500 : The Book of the Grail

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Who has not wanted to know exactly what happens in the machine?
I remember rumors that spoke of an amazing book in which we could understand everything … on the PC-1600.
Oh yes, I searched long and I abandoned my quest for the Grail.

6 months ago, a friend offered me some books on the PC-1500.
He told me “there is a book with commented ROM listing.”
I thought it was for the PC-1600 but he told me the title: PC-1500 Intern
What?? For the PC-1500?? Great!

Wow, what a thrill opening my package and discovering this book among other treasures …
Here it is:

PC-1500 Intern
PC-1500-Intern

the book and the patch sheets
PC-1500-Intern add

A sample page :
PC-1500-Intern 133

Paper ? Sharp, Tandy or unbranded ?

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With our printers we printed hundreds of meters listings.
Everyone remembers So these little paper rolls?
Okay, did you know these 3 models?

EMI_2856 - Version 2

We have:
– The Tandy box with its blue color which contains 6 rolls
– Sharp box ROL-P-38 containing 5 rolls
– The box unmarked ROL-P-38, which also contains 5 rolls

But look a little closer these rolls …

To the right we have the Sharp left and the Tandy and unbranded.
The length of paper appears to be identical.
But there are two conspicuous differences:
– The color of the paper.
– The red band indicates the end of paper.

EMI_2859

There really is a difference in quality!

Do you know any other packaging for these rolls?
If this is the case thank you send me a message.

Many versions of PC-1500 ? PC-1600 too !

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Hey, we focused on the PC-1500 and PC-2 versions but do you know the PC-1600 versions ?
As this pocket is compatible with PC-1500 we can talk about it.

I have two PC-1600 but they are not exactly same.
Lets see the old version :
PC-1600 V1

and the new one :
PC-1600 V2

The memory place is different, as small board for the V1 and on CPU board for the V2.
If you look at the Technical Reference Manual you will have the first version :
PC-1600SCH V1

And if you look at the Service Manual there is the V2 :
PC-1600SCH V2

Are you looking for a screwdriver to open your precious PC-1600 ? 😉

Tandy a full system closed to Sharp one.

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Most of you better know the Sharp system. Why ?
Maybe because Tandy/Radio shack didn’t follow Sharp along the years for this pocket computer.
Here is the Tandy system :
EMI_2609

We know some PC-3, PC-4… but the PC-2 is still at the PC-1500 step.
I don’t know exactly why…
Someone can help me with this item ?

I already presented the PC-2.
To be precise I presented one version of the machine.
Yes, you really read “one version”, maybe the third one.
On the picture you can see lot of blue straps and a IC named “SC613128” with “A03”.
TRS-80_PC2_004

We know it’s the firmware revision. Then A03 seems to be the third.
Does someone have the first and the second ? Uh… that sounds mysterious…

I have the fourth !
Tandy_PC2_A04

As you see, no blue straps on the CPU board.
In fact it’s exactly closed to the PC-1500 evolution.
But… one moment please…
With some friends we had a really interesting discuss about Tandy and Sharp.
Like the chicken and the egg … which came first?

After reading this first article you have more questions than answers, isn’t it ?
– who have the versions one and two ???
– who can answer the chicken/egg question ???