# Re: New Interface sanei_pa4s2...

From: Jochen Eisinger (jochen.eisinger@gmx.net)
Date: Wed Jun 07 2000 - 01:48:31 PDT

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  Petter Reinholdtsen wrote:
  >
  > Is this chipset API enough for the backend to only implement the
  > high-level functionallity, and not require any hw access?
  >
  This depends on what you mean withhw access. This interface gives an
  backend easy access to the registers of a A4S2 chipset so the backend
  needs not to use inb/outb. But the backend still cares about what to
  send to the registers... To summarize this, the interface just cares
  about the low level protocoll.

  >
  > After reading thru the source, it seems like a few of the functions
  > might be used to improve the pio API. It must be possible to make a
  > parport API that works on all platforms. Are the _epp functions
  > implementing the 'enhanced parport' mode? I've been reading about the

  They are taken from a VxD-driver and as far as I know, this driver only
  works when EPP/ECP mode is activated in the BIOS. So I don't think the
  implement this mode, they just use it...

  > the Linux parport kernel API, and noticed support for epp, ecp and
  > nibble mode in this API. Would a sanei parport API with support for
  > such modes make it easier to support parport scanners?

  Again, I don't know. But I'll have a look at this API. :-)

  >
  > Happy hacking,

  Thanks :-)

  -- jochen

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