Atari 130XE Manual do Utilizador descarregar pdf (Página 8)

thanks to all who ordered the new freezer in advance and waited so patiently.

Salzburg, November 2012

Matthias Reichl

P.S. (March 2013): I’d like to add a big “thank you” to Peter Dell who took over the job

of translating the German manual into English. At the end this was a whole lot more of

work than expected, but Peter was really brave and did an awesome job – thanks Peter!

Preface by the designer of the new freezer (2005)

The project to design a new

TURBO FREEZER

started in early 2004, when Bernhard

Engl gave permission to the ABBUC to remake his products (The TURBO 1050 and

the

TURBO FREEZER

). To me, the

TURBO FREEZER

has always been the most

interesting piece of hardware extension that has ever been available for the Atari and

before starting the project, I had already studied and analyzed how it worked. That’s why

it was pretty obvious that I would engage in rebuilding the

TURBO FREEZER

. There

were more participants in the team: Bernhard Pahl, Florian Dingler, Torsten Schall, Guus

Assmann, Frank Schr

oder and towards the end also Wolfram Fischer.

So I would like to express big thanks to all of you. The project wouldn’t have come this

far without you!! And some special thanks to Guus, for the many ideas for extensions,

designing the PCBs and producing the prototypes. Thanks as well to Bernhard Engl for

his tips and the detailed information for the original

TURBO FREEZER

. All other team

members, thanks for the support and the testing!

My original plan was to remake the freezer, using modern parts. At this point, I never

imagined that the result would be such extensive and powerful improvements! During the

project, both hardware and software have been gradually extended and improved up to a

point where only the basic (and genius) principle idea of the freezer was left. Everything

else had been changed.

Some of the extensions came by as pure coincidence. For example the cartridge emulation:

As 16K EPROMs were much more expensive, Guus suggested using a ﬂash ROM. To

enable programming this ﬂash ROM from the Atari, it was needed to map the chip into

the memory-map of the Atari. This formed the basis for the cartridge emulation :-)

Likewise with the RAM: The original 2K RAM was hard to get and also quite expensive.

So the ﬁrst step was to upgrade to a 32K chip and also use 128K ﬂash ROM. The next

step was to go to 128K RAM and this made it possible to put a memory-snapshot into

this RAM. And the ﬂash ROM size was increased to 512K. To enable this, the logic had

to be improved. And a bigger logic chip gave space for the emulation of the 16K OSS

modules and the SpartaDOS X module.

With the current state of the logic chip’s internals, there’s no space left and we’re all

content to have gotten the maximum out of the parts that were used. For the software,

there are some more ideas for extensions, but that’s all I’ll say for now.

During the development process, I’ve constantly kept in mind that I wanted to create

an open basis for further developments. For this reason, all design information is freely

available and there’s even a JTAG interface on board so the logic can be reprogrammed.

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