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 Resources:
 card.resource
  BeginCardAccess
  CardAccessSpeed
  CardChangeCount
  CardForceChange
  CardInterface
  CardMiscControl
  CardProgramVoltage
  CardResetCard
  CardResetRemove
  CopyTuple
  DeviceTuple
  EndCardAccess
  GetCardMap
  IfAmigaXIP
  OwnCard
  ReadCardStatus
  ReleaseCard
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Docs » Autodocs » card.resource » CardAccessSpeed

NAME

	CardAccessSpeed -- Select best possible memory access speed.

SYNOPSIS

	result=CardAccessSpeed( handle, nanoseconds );
d0 a1 d0
ULONG CardAccessSpeed( struct CardHandle *, ULONG );

FUNCTION

	This function is used to set memory access speed for all CPU
accesses to card memory.
Typically this information would be determined by first examining
the Card Information Structure.
Then you would use this function to let the card.resource
select the best possible access speed for you, however note
that the range of possible access speeds may vary on some
machines (depending on the type of credit-card interface
hardware being provided).

INPUTS

	handle - Same handle as that used when OwnCard() was called.
nanoseconds - Preferred access speed in nanoseconds.

RESULT

	Speed - Access speed selected by resource (in nanoseconds). 
0 - Not successful. Either because the credit-card was
removed, or the access speed you requested is slower than
that supported by the credit-card interface hardware.

NOTES

	This function may be called from within a task, or from a level 1
or level 2 interrupt.

SEE ALSO

OwnCard()

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