The text read off it
[90.03.04]
2. Special Entries
00000 end of card (no data word is associated with this entry)
01111 end of text; the address of the corresponding data word contains the
relative program entry point.
00010 system reference point; the address of the corresponding data word
is the system reference number. Such an entry is generated by the
appearance of a SYS pseudo-op in CRYPT, and is used to define
reference points in object time subroutines.
00001 location counter control entry; the data word is of the form
OP A
OP = PZE A is an absolute origin
= PTW fixed length BSS of length A.
= PTH variable length BSS; the variable field follows
as a complex expression. A is the length
assumed for assembly.
= MON A is a relative origin.
01110 the corresponding data word is an immediate operator. Such an
entry occurs only in 2TEXT.
Codes 00011 through 01101 are not assigned.
3. Standard Word
The control group is of the form 1 AB CD, where
AB = 00 constant decrement
= 01 relative decrement
= 10 the decrement is a system reference
= 11 the decrement is represented by a complex expression
CD has the corresponding code values describing the address. The prefix and tag of a standard word are constant.