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List:       ms-smartcardddk
Subject:    Re: PC/SC & EMV Specifications
From:       Walter Oney <waltoney () ONEYSOFT ! COM>
Date:       2002-01-25 11:19:55
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Sasidhar M wrote:
> One thing i want to make it clear that our SCR driver
> is loaded bypassing the serial.sys with the PNP-ID
> ACPI\XXXX. So our driver is interacting directly to
> the hardware without any intervention of the serial
> driver (serial.sys).

Well, okay. This will cause end users considerable grief during
installation, but that may not be too major an issue in a dedicated
application, where the PC is being centrally setup and won't be used for
anything else.

> Then does the timer granularity on windows systems
> sufficient enough to achieve EMV L1 Compliance. As we
> go through the EMV Specs there are certain timing
> issues to deactivate or to initiate a warm reset on
> the cold ATR within the specified time like within
> some initial etus. Does we achieve this timing issues
> without any problem under windows systems with pure
> software (driver) without any Micro Controller
> (firmware) interaction?

You still have the problem that the system timer granularity will be too
big for your needs. You can call KeQueryTimeIncrement to find out what
this is, but I don't know of a way to change it.

--
Walter Oney
Consulting and Training
PC/SC drivers a specialty
http://www.oneysoft.com

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