Xerox 701P21091 manual Table D-3. Content of tape records, Table D-4. RAD-50 character set

Offline specifications

Table D-3. Content of tape records

Byte range	Information contained in record	Additional information
00–02	File name	If not used, must be zero.
04	File type (RAD–50)
06	File size in 512–byte blocks
10	First free byte
12	Date (DOS format)	Not used
14	Record size in bytes	80 for text; otherwise, 512
16	Tape block size in bytes
20	Reserved for future use
22–32	ASCII file name (9 characters).	Currently only 6–character file
		names are supported.
		Unused file name characters
		must be filled with 0.
33-35	ASCII file type
42–176	Contain 0
177	ASCII * (052)
200–777	Contain 0

NOTE: Characters in the ASCII file name and type fields must be in the RAD–50 (Radix-50) character set. The following table defines the RAD-50 character set.

Table D-4. RAD–50 character set

RAD–50	ASCII	RAD–50	RAD–50
character	Octal value	Octal value	decimal value
(space)	040	000	000
A–Z	101–132	001–032	1–26
$	044	033	27
.	056	034	28
(undefined)		035	29
0–9	060–071	036–047	30–39

D-6 Using LCDS Print Description Language