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Preliminary User Guide, Rev. 2 USS-720
February 1999 USB Device Driver
Lucent Technologies Inc. 7-33
13
5 I/O Control Data Structures (continued)
5.4 ADVREGISTER_1284
The ADVREGISTER_1284 structure is used when issuing the IOCTL_GET_1284_REGISTER control code.
5.4.1 Data Structure
typedef struct _ADVREGISTER_1284
{
UCHAR RegisterAddress;
UCHAR DataRegister;
UCHAR StatusRegister;
UCHAR ControlRegister;
UCHAR EppAddressRegister;
UCHAR EppDataRegister;
UCHAR EcpCommandRegister;
UCHAR ExtendedControlRegister;
UCHAR USS720ControlRegister;
UCHAR USS720SetupRegister;
UCHAR Reserved[10];
}
ADVREGISTER_1284, *PADVREGISTER_1284;
5.4.2 Members
RegisterIndex—Address of the parallel port register.
DataRegister—Data Register value (see Data Register table in Lucent Technologies
USS-720 USB-to-
IEEE
1284
Bridge
Preliminary Data Sheet for details).
StatusRegister—Status Register value (see Status Register table in Lucent Technologies
USS-720 USB-to-
IEEE
1284 Bridge
Preliminary Data Sheet for details).
ControlRegister—Control Register value (see Control Register table in Lucent Technologies
USS-720 USB-to-
IEEE
1284 Bridge
Preliminary Data Sheet for details).
EppAddressRegister—EPP Address Register value (see EPP Address Register table in Lucent Technologies
USS-720 USB-to-
IEEE
1284 Bridge
Preliminary Data Sheet for details).
EppDataRegister—EPP Data Register value (see EPP Data Register table in Lucent Technologies
USS-720 USB-
to-
IEEE
1284 Bridge
Preliminary Data Sheet for details).
EcpCommandRegister—ECP Command Register value (see ECP Command Register table in Lucent Technolo-
gies
USS-720 USB-to-
IEEE
1284 Bridge
Preliminary Data Sheet for details).
ExtendedControlRegister—Extended Control Register value (see Extended Control Register table in Lucent Tech-
nologies
USS-720 USB-to-
IEEE
1284 Bridge
Preliminary Data Sheet for details).
USS720ControlRegister—USS-720 Control Register value (see USS-720 Control Register table in Lucent Tech-
nologies
USS-720 USB-to-
IEEE
1284 Bridge
Preliminary Data Sheet for details).
USS720SetupRegister—USS-720 Setup Register value (see USS-720 Setup Register table in Lucent Technolo-
gies
USS-720 USB-to-
IEEE
1284 Bridge
Preliminary Data Sheet for details).
Reserved—Reserved for future use.