Compaq AA-RNG2A-TE manual 10Defining Device Register Offsets

};
#define TX_INT	0x8000
#define W1_RXDATA	0x0	6
#define W1_TXDATA	0x0
		7
#define W1_FREETX	0xc
		8

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2

Defines the offset for the receive status register.

Defines an enumerated data type called w1_rxstat. The if_el device driver can assign one of the following values to W1_RXSTAT (the receive status register):

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4

RX_IC	Indicates an incomplete operation.
RX_ER	Indicates an error in the operation.
RX_EM	If any of the bits are set in the mask, indicates
	that an error has occurred.
RX_EOR	Indicates an overrun error in the operation.
RX_ERT	Indicates a run-time error.
RX_EAL	Indicates an alignment error.
RX_ECR	Indicates a CRC error.
RX_EOS	Indicates an oversize error.
RX_BYTES	Mask used to determine the number of bytes received.

Defines the offset for the transmit status register.

Defines an enumerated data type called w1_txstat. The if_el device driver can assign one of the following values to W1_TXSTAT (the transmit status register):

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TX_CM	Indicates that the transmission completed.
TX_IS	Indicates that the device should interrupt when a
	transmission is successfully completed.
TX_JB	Indicates a jabber error.
TX_UN	Indicates an underrun. This is a serious error
	that requires a reset.
TX_MC	Indicates the maximum number of colli-
	sions that occurred.
TX_OF	Indicates an overflow error.
TX_RE	Not currently used.

Defines the offset for the request interrupt after completion register.

Defines the offset for the receive data register.

Defines the offset for the transmit data register.

2–10Defining Device Register Offsets