/*
/*	This file defines data structures referenced by SSDRIVER.
/*
MODULE ssdef IDENT "V01.1";

/*
/*	Define the UCB extension.
/*
AGGREGATE ssucb STRUCTURE PREFIX "ssucb_";

    ucb BYTE UNSIGNED DIMENSION 132 FILL;	/* Skip over standard UCB
    error_ast_rmod BYTE UNSIGNED;		/* Access mode of error AST
    state STRUCTURE BYTE;			/* State byte
	error_enabled BITFIELD MASK;		/* Error interrupts enabled
    END state;
    error_ast_address ADDRESS;			/* Address of error AST routine
    CONSTANT "length" EQUALS .;			/* Length of structure

END ssucb;

/*
/*	Define standard VMS buffered I/O packet.
/*
AGGREGATE buf STRUCTURE PREFIX "buf_";

    data_address ADDRESS;			/* Pointer to data area
    user_buffer ADDRESS;			/* Pointer to P0 user buffer address
    size WORD UNSIGNED;				/* Size of block
    type BYTE UNSIGNED;				/* Type of block
    spare BYTE UNSIGNED;			/* Unused byte
    CONSTANT hdrsiz EQUALS .;			/* Length of header
    data_area BYTE UNSIGNED;			/* Start of data area

END buf;

END_MODULE ssdef;