User's Manual

XEROX LASER PRINTING SYSTEMS TAPE FORMATS MANUAL 11-1
11. 11Univac SDF tape format
The Univac SDF tape format is created on the Univac Operating
System 1100-OS, level 32, and later versions. It is designed in a fixed
block format with variable length records. This format is
characterized by two types of character representation and packing
interspersed record by record.
Univac ASCII character set
Nine-bit ASCII characters (refer to table 11-1) are recorded in 8 x 9
packing mode. Six-bit Fieldata characters (refer to table 11-2) are
recorded in 4 x 3 packing mode. The characters within a print line are
all either in Fieldata or in ASCII. Records of different translation,
however, may be intermixed in a block. The records are generally
preceded by a 36-bit (Univac) word in Fieldata characters, giving
record length and other control information.
Table 11-1. Univac ASCII character set
Octal Character Octal Character
040 (blank) 064 4
041 ! 065 5
042 " 066 6
043 # 067 7
044 $ 070 8
045 % 071 9
046 & 072 :
047 ’ 073 ;
050 ( 074 <
051 ) 075 =
052 * 076 >
053 + 077 ?
054 ’ 100 @
055 - 101 A
056 . 102 B
057 / 103 C
060 0 104 D
061 1 105 E