1.4 ACP-QIO Record Attributes Area

Figure 1-5 shows the format of the record attributes area.

Figure 1-5 ACP-QIO Record Attributes Area

Table 1-9 lists the record attributes values and their meanings.

Table 1-9 ACP Record Attributes Values

Field Value	Meaning
FAT$B_TYPE	Record type. Contains FAT$V_RTYPE and FAT$V_FILEORG.
FAT$V_RTYPE	Record type. The following bit values are defined:
	FAT$C_FIXED	Fixed-length record
	FAT$C_VARIABLE	Variable-length record
	FAT$C_VFC	Variable-length record with fixed control
	FAT$C_UNDEFINED	Undefined record format (stream binary)
	FAT$C_STREAM	RMS stream format
	FAT$C_STREAMLF	Stream terminated by LF
	FAT$C_STREAMCR	Stream terminated by CR
FAT$V_FILEORG	File organization. The following bit values are defined:
	FAT$C_DIRECT	Direct file organization^[1]
	FAT$C_INDEXED	Indexed file organization
	FAT$C_RELATIVE	Relative file organization
	FAT$C_SEQUENTIAL	Sequential file organization
FAT$B_RATTRIB	Record attributes. The following bit values are defined:
	FAT$M_FORTRANCC	Fortran carriage control
	FAT$M_IMPLIEDCC	Implied carriage control
	FAT$M_PRINTCC	Print file carriage control
	FAT$M_NOSPAN	No spanned records
	FAT$M_MSBRCW^[2]	Record count word (RCW) is MSB formatted
FAT$W_RSIZE	Record size in bytes.
FAT$L_HIBLK^[3]	Highest allocated VBN. The ACP maintains this field when the file is extended or truncated. Attempts to modify this field in a write attributes operation are ignored.
	FAT$W_HIBLKH	High-order 16 bits
	FAT$W_HIBLKL	Low-order 16 bits
FAT$L_EFBLK^[3] ^[4]	End of file VBN
	FAT$W_EFBLKH	High-order 16 bits
	FAT$W_EFBLKL	Low-order 16 bits
FAT$W_FFBYTE	First free byte in FAT$L_EFBLK.
FAT$B_BKTSIZE	Bucket size, in blocks.
FAT$B_VFCSIZE	Size in bytes of fixed-length control for VFC records.
FAT$W_MAXREC	Maximum record size, in bytes.
FAT$W_DEFEXT	Default extend quantity.
FAT$W_GBC	Global buffer count.
FAT$W_VERSIONS	Default version limit; valid only if the file is a directory
FAT$L_GBC32	Enhanced longword global buffer count.
FAT$B_RECATTR_FLAGS	Record attributes flags. The following bit values are defined:
	FAT$M_GBC_PERCENT	Interpret value in FAT$L_GBC32 as a percent instead of count.
	FAT$M_GBC_DEFAULT	RMS should set default for global buffer count and ignore any values in FAT$W_GBC or FAT$L_GBC32.
^[1]Defined but not implemented. ^[2]Variable-length record format (FAT$C_VARIABLE) only. ^[3]Inverted format field. The high- and low-order 16 bits are transposed for compatibility with PDP-11 software. ^[4]When the end-of-file position corresponds to a block boundary; by convention, FAT$L_EFBLK contains the end-of-file VBN plus 1 and FAT$W_FFBYTE contains 0.