Introduction to Loged
1. The LOGED program is responsible for maintaining the libraries of
gates stored in .GATE files. When LOG starts, the GATES commands
in its configuration file specify which gate libraries to use.
2. The "loged" command may be given by itself or with a the name of
a file to load initially. Additional arguments are interpreted
as they would be for a LOAD command, as a list of gates to load
from the file. Note that in LOGED terms, a "gate" is a kind of
gate, such as NAND or 74138, not an instance of the gate-kind.
3. To exit LOGED, type QUIT. You will be given a chance to save the
gates in memory if they have been modified. If the gates came from
one file originally, LOGED uses that name. Otherwise, if no file
was loaded or several files were mixed together, LOGED prompts for
the file name to use.
4. At any time in LOGED there is a "current gate." Many commands
operate on the current gate. The GATE, NEXT or PREV commands can
be used to select the current gate. LOGED stores the following
information for each gate:
a. The name of the gate, up to eight characters (uppercase).
b. The group number (library-screen page number), from 0 to 8.
c. The gate's picture, including pins and grab box.
d. The "simtype" number, telling which simulator "owns" the gate.
e. The gate's definition or program, simulator-dependent.
f. Connectivity information in case pins are hard-wired together.
g. Miscellaneous flags affecting LOG's treatment of the gate.
h. The gate's labels screen, shown when configuring the gate.
Various commands described below manipulate all these parameters
for the current gate.
5. Many commands accept gate-name arguments which may include
wildcard characters. The '.' and '*' characters stand for exactly
one, or zero or more, characters respectively. Use '%' or '?'
(respectively) instead for wildcards which prompt yes-or-no for
each potential match. A terminating ';' followed by digits
matches only gates in the groups specified. For example, the
pattern 'a*bc;23' matches only gates whose names begin with 'a'
and end with 'bc', and which are in groups 2 or 3. If a list of
several names is given separated by spaces, gates which match
any of those names are accepted.
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