On Tue, 4 May 1999, Donnchadh Ó Donnabháin wrote:
> Hi Wojtek,
> I haven't made much progress since then. If you want, I can send you
> or anyone else the current source code. At the moment, all I have is
> a Linux device driver which can read/write registers on the scanner ASIC
> and a few simple test programs. The scanner has to be controlled at a very
> low level. I am still trying to work out how to control the stepper motor.
> I have been able to switch the lamp on/off detect whether the cover is
> up/down and move the scanner head home. I have been looking at the Plustek
> parallel port driver and my driver will need to do a lot of the same things.
> I am 99% certain that I have correctly reverse engineered the low-level
> protocol but I still need to work out what the internal scanner registers
> mean. At the moment I don't use the parport driver and I need to clean up
> some of the code.
Oh my god ! Do the Mustek parallel port scanners have a own
microcontroller at all ? Or are they the "yet cheaper, yet lousier"
versions of the 600 II N, with only the ASIC and the ADC inside ?
(the 600 II N still has a 8031 type MCU)
When do the $1.99 scanners come, whose stepper motors and CCD sensors
are directly connected to the PCI bus ? (Why bother with internal
intelligence, since everyWin has a Pentium-II with 450 MHz or better
and else the CPU is useless anyway with these Microsoft-Games.
Good Luck !
Andreas.
-- Dipl.-Ing. Andreas Czechanowski Fon: +49-711-685-7335 andreas.czechanowski@ins.uni-stuttgart.de Fax: +49-711-685-7311 Institut fuer Netzwerk- und Systemtheorie Pfaffenwaldring 47 Universitaet Stuttgart 70550 Stuttgart
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