.so =fmac=/ugh
.de cm
.sp
.ne 3
.ti -5
.bf
[1]
.br
.en cm
.de bu
.sp
.ne 2
.ti -3
[bf .]@[tc]
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.TP
Software Tools Subsystem
.sp
Version 7.1 to Version 8 Conversion Guide
.AU
Terrell L. Countryman
Jeanette T. Myers
Peter N. Wan
.PD "April, 1982"
.HE "Version 8 Conversion Guide"
.fo //- # -//
.pn 1
.MH Introduction
.nh
Version[bl]8 of the Software Tools Subsystem differs from
Version[bl]7.1 in a number
.hy
of ways, most of which will not impact the average user.
Most changes are extensions or internal performance improvements,
and affect one or two commands rather than the entire Subsystem.
This conversion guide is divided into three sections:
[bf Global[bl]Changes] discusses the alterations
that affect large portions of the user interface;
[bf Status[bl]of[bl]V7.1[bl]Commands] and
[bf Status[bl]of[bl]V7.1[bl]Subroutines] describe
additions, deletions, and modifications made to individual commands
and subroutines.
.MH "Global Changes"
.SH "Terminal Type Handling"
Various programs and library routines now support the
tailoring of output for specific terminals.
This entailed changes in the library, the macro definitions file,
the Subsystem common blocks,
'swt', 'se', 'term', and 'term_type'.
You will be affected by these changes if you have added terminal
types to 'se' or if you have used the preliminary version of the
Virtual Terminal Handler (VTH) library on the Version[bl]7.1 release.
Since a prompt for terminal type may now occur upon Subsystem entry,
you may have to add terminal types to the "=ttypes=" file or
educate your users about terminal types.
.pp
If you want to extend the terminal type knowledge of the
Subsystem, you must add new terminal types
and information concerning them
to the file "=ttypes=", add a new initialization file
in the directory "=vth=" for each new terminal type,
and modify and recompile 'se' with new code to handle
the new terminal.
.SH "Templates"
Templates are no longer mapped to a single case.
Unless you have some single-case terminals or regularly program in
upper-case only, this change is unlikely to affect you.
.pp
If a template must contain imbedded equals signs, use two consecutive
equals signs to pass one through the template expander; in an earlier
version of the template processor, the "at[bl]sign" was used to
"escape" the equals sign.
.SH "Speed"
Version[bl]8 of the Subsystem uses considerably less CPU time for
I/O than Version[bl]7.1.
Unfortunately, if you are moving up to Revision[bl]18 of Primos, you may
not notice much difference;
Revision[bl]18 can be that much slower than Revision[bl]17.
.SH "Memory Segments"
Prime has now used all available private memory segments.
At Version[bl]8 of the Subsystem, it has become necessary to increase
the NUSEG parameter in the Primos configuration file to at
least 42 (octal), to
provide private segments for the Subsystem that do not conflict with
standard Prime programs.
This implies that programs using secret knowledge of the Subsystem's
common blocks must be relinked.
It also implies that you cannot bring up Version[bl]8 without rebooting
your system.
.pp
Listed below are the segments required for the Subsystem:
.be
.in -5
.ul
                               Version 8      Version 7.1

SWT Shell and template area      2030             2030
SWT Screen Editor                2031             2031
SWT Library                      2035             2035
SWT Common                       4040             4036
SWT Stack                        4041             4035
.in +5
.ee
.SH "Process Ids to Three Digits"
To accomodate the increase in the number of processes in Primos[bl]18,
process ids will be three digits instead of two.  The "=termlist="
file has changed slightly in format to accomodate the increased
id lengths and AMLC numbers.
.SH "Cldata Template"
The location of "cldata", a Primos command interpreter data structure
referenced by the Subsystem shell, is now a template.
The Version[bl]8 release has "cldata" defined
to be segment 6002, word 6, which applies to you if you are
running Primos[bl]18.3 or above.  If you are running Primos[bl]18.2
or lower, there is a commented template in the
"Configuration Options" section of "=template=" that you need to
use.
.SH "Exception Handling"
The new version of the shell now allows you to intercept exceptional
conditions, such as pointer faults, arithmetic value errors, interrupts,
etc.  Quits (via control-p or "break") abort the current program and
return to command level in the shell, rather than leaving the you
stranded in Primos, as was the case in previous versions of the shell.
If you have a shell variable named "_quit_action" (the value is not
important), then when
the quit occurs, the shell will prompt you as to whether
to abort the current program, continue, or call Primos.  If Primos is
called, the current program may be continued by typing START,
or the Subsystem may be re-entered by typing REN.
.SH "DBG Support"
There is now some support for invoking the symbolic debugger from
the Subsystem.  Please see the Reference Manual entry on 'dbg'
for more information.
.SH "New Shell Control Variables"
The variable "_kill_resp" can be used to set the character string
that will be printed on your
screen whenever you type a "kill" (the default is the string "\\");
"_prt_form" can be used to
specify your usual printing form (the default is to use the default
installation printer form); "_prt_dest" can be used
to specify your favorite line printer (the default is to use the
default installation printer); and, "_quit_action"
can be used to take advantage of the new quit handling
capabilities of the shell (by default, this variable is not declared and
you are automatically returned to the command level of the shell,
with no choice of error handling for quits).
.pp
Note that when a variable is set using either 'declare' or 'set',
the value does not take effect until you exit the Subsystem and
re-enter.
.SH "Deleted Macro Definition"
One macro definition has been removed from the standard
macros file.
ESCCHAR is no longer defined; use ESCAPE instead.
.SH "Change in Value of EOS"
After Version[bl]8 of the Subsystem, the value of the end-of-string
character (EOS) will be changed.  The current value of EOS, as
defined in the Subsystem definition file, is -2.  It will be changed
to the value 0 to maintain consistency with the way the C library
handles the end-of-string.  If you have any programs which depend on
the value of EOS being of a certain magnitude (i.e., being negative),
you should recode them to avoid depending on that assumption.
This change will require the recompilation of all local Subsystem
programs.
.SH "New Reference Manual Sections"
Two new sections have been created to contain low level commands
(Section 5) and low level subroutines (Section 6).
You should not invoke these commands and routines
under normal circumstances; they are usually support routines
for user-callable Subsystem commands and routines.
.ne 10
.pp
The following commands were moved from sections 1 and 3 to
section 5:
.be 5
.nf
.bf 1000
.ta 15 30 45
.tc \
bmerge\bnames\bs
bs1\bugfm\bugn
guess\mkcl
.bf 0
.ee
.fi
.ta
.tc
.ne 30
.pp
The following routines were moved from sections 2 and 4 to
section 6:
.be 25
.nf
.bf 1000
.ta 15 30 45
.tc \
at$\bponu$\c$end
c$incr\c$init\call$$
chunk$\cof$\cpfil$
cpseg$\dgetl$\dmark$
dmpcm$\dmpfd$\dopen$
dputl$\dread$\dsdbiu
dseek$\dwrit$\findf$
finfo$\first$\flush$
gcdir$\gcifu$\getfd$
gfnam$\icomn$\iofl$
ioinit\ldseg$\ldtmp$
lopen$\lutemp\mkdir$
mkfd$\mkpa$\mktr$
reonu$\rmfil$\rmseg$
rtn$$\sprot$\st$lu
t$clup\t$entr\t$exit
t$time\t$trac\tcook$
tgetl$\tmark$\tputl$
tread$\tscan$\tseek$
ttyp$f\ttyp$l\ttyp$q
ttyp$r\ttyp$v\twrit$
upkfn$\vt$alc\vt$clr
vt$db\vt$db1\vt$db2
vt$db3\vt$def\vt$del
vt$dsw\vt$err\vt$get
vt$gsq\vt$idf\vt$ier
vt$ndf\vt$out\vt$pos
vt$put\vt$rdf\zmem$
.bf 0
.ee
.fi
.ta
.tc
.SH "New Subsystem Libraries"
[bf Vthlib] has been totally rewritten, and is now supported
as part of the Subsystem.  It is much faster than
the earlier version, and offers more features.  In general, the
rewritten routines are not compatible with those of the earlier
release of VTH.  Programs which used the earlier version of VTH
will have to have the VTH calls recoded to use the new routine
names (and new calling formats).
.SH "New Subsystem Templates"
The templates "=newcmdnc0=" and "=newsystem=" specify where newly
compiled Subsystem
files that belong in "cmdnc0" and "system" are placed during a
recompilation of the Subsystem.
The "=ttypes=" file contains a list of terminals supported by your
Subsystem and their characteristics.
The "=cldata=" template, mentioned above, indicates where the
Primos "cldata" data structure is located.  The "=sysname="
template is used to indicate the Primenet node name, if the
system is a network system.
.pp
Obsolete templates have been removed from the Version[bl]8 release
template file.
.MH "Status of Version 7.1 Commands"
This section summarizes the user-visible changes that have been made
to Subsystem commands for Version[bl]8.
It is divided into several subsections:
obsolete commands, superseded commands, modified commands,
enhanced commands, and unchanged commands.
The final subsection is a summary of commands that
are new for the Version[bl]8 release.
.SH "Obsolete Commands"
The commands in this subsection were part of the Version[bl]7.1
Subsystem, but are not included in the Version[bl]8 release.  Most
of them were used only by certain shell programs and have outlived
their usefulness.  In other cases, the commands were relics of past
Subsystems, and either were no longer useful, or no longer worked.
.sp
.in +10
.bf
No commands are obsoleted at Version 8.
.in -10
.SH "Superseded Commands"
The commands in this subsection are not part of the Version[bl]8
Subsystem; their functionality has been subsumed by other
commands.  Each entry describes the command and options you
can use to get the same results.
.in +10
.cm ar
Has been completely rewritten. The old 'ar' is now 'old_ar'.
All existing archives should be processed with 'old_ar', and then
reprocessed with 'ar', since support of 'old_ar' will be dropped
in a future release.
.cm dumpls
Use the new command 'dump' instead.  The command line would be
"dump[bl]ls".
.cm dumpsv
Use the new command 'dump' instead.  The command line would be
"dump[bl]sv".
.in -10
.SH "Modified Commands"
The commands listed in this subsection have been modified for the
Version[bl]8 release and are no longer completely compatible
with their Version[bl]7.1 counterparts.
Each entry gives a brief description of the changes, but
before using any of these commands, please check the corresponding
Reference Manual entry to be sure of the command's exact behavior.
.in +10
.ne 6
.cm dprint
The argument syntax has been changed slightly.
The length option is now "-l[bl]<length>", rather than
"-<length>".
.sp
'Dprint' can now handle the generation of multiple copies.
.ne 6
.cm mon
Accepts four commands while running; three are used to reformat
the screen and the fourth command redraws the screen.
.sp
Now uses VTH to do output, so it will work on terminals besides
Beehives (any terminal supported by VTH).
.ne 8
.cm pg
The control-c response causes 'pg' to ignore any remaining file
names that were command line arguments and exit to the
command interpreter.
.sp
Default prompt now shows the file being displayed as well as the
page number.
.sp
The "-s" option has been added; it allows you to specify the
screen size as an argument.  The old syntax of "-<screen[bl]size>"
was ambiguous if the <screen[bl]size> was 1, 2, or 3 (it was too close
to the Subsystem convention of referencing the standard input/output
ports with a "-<port[bl]number>").
.cm rtime
By default, the output of the command being measured is diverted
to /dev/tty; you can specify diversion to /dev/null if no
output is desire.
.ne 8
.cm se
Your terminal type can now be obtained by a call to the Subsystem.
(This usually eliminates the need to know terminal type mnemonics,
or at least the need to retype them as long as the Subsystem knows
your terminal type --- if the Subsystem does not know your terminal
type, it will prompt you for it when you invoke 'se').
.sp
Long input lines are now scrolled horizontally, allowing the cursor
to remain visible at all times.
.sp
New options include "oh[<baud>]", to tell 'se' your baud rate;
"olm[<column>]", to set
the left margin of text to be displayed in the window
(permitting handling of very wide files); and,
"os[s[bl]|[bl]f[bl]|[bl]f77]",
to set several programming language
related parameters at once ("oss" for PMA, "osf" for FTN, "osf77"
for F77).
.sp
Documented options include "ok", to indicate whether or not
the current edit buffer has been saved; and, "om" to
display a message (sent via 'to').
.sp
New commands include "e!", "w!" and "q!" which can be
used to enter, write or quit without having 'se' tell
you if you are about to destroy the contents of your
edit buffer or the contents of an existing file.
These replace the old forms "ea", "wa", and "qa", respectively.
.sp
New terminal types supported by 'se' are the hz1510, ts1, tvi, and z19.
.sp
'Se' now takes advantage of terminal hardware line insert/delete
functions (if they are available for the given terminal) to speed
up processing over slower transmission lines (i.e., dialups).  The
"-h" command line option and the "oh" 'se' command set/query the
baud rate you are running at; 'se' decides how many nulls
to put out, and whether to use the hardware line insert/delete functions
or not, based on a combination of the baud rate and terminal type.
If you want to add terminal types to 'se' for locally available
terminals, the file "=src=/spc/se.u/how_to_add_terminal_types" explains
how to do it (it also includes information on where to add the code
necessary to handle the hardware line insert/delete functions).
We at Georgia Tech would be interested to know about terminals that
you add to both 'se' and the VTH package, so that we can
include them in future releases of the Subsystem.
.ne 8
.cm sh
The shell now handles breaks and control-p. If you declare the
variable "_quit_action", you receive a prompt after a break and
are allowed
to continue the program, terminate the program and return to the
Subsystem, or terminate the program and drop out to Primos (for
debugging).
If "_quit_action" is not declared, interrupted programs simply
return control to the shell.
.ne 7
.cm term
Support for the Subsystem terminal type management routines has been
added.
.sp
New "-newline" and "-eof" options to specify newline and end-of-file
characters; new "-vth" and "-se" options to specify whether or not
the terminal type is supported by the Virtual Terminal Handler (VTH)
and 'se'.
.sp
Removed "-tab" and "-enb".
.ne 4
.cm term_type
Now uses the Subsystem terminal type management facilities.
Options have been added to query the values of particular terminal
attributes, as well.
.ne 5
.cm x
'X' now calls the Primos command interpreter directly, via the Primos
routine CP$.
(This reduces execution time and the amount of garbage displayed on
your terminal.)
.sp
'X' can execute Primos commands interactively,
regaining control when you generate an end-of-file.
.in -10
.SH "Enhanced Commands"
Commands in this subsection have been functionally enhanced for the
Version[bl]8
release, but remain compatible with their Version[bl]7.1 counterparts.
.in +10
.cm change
Accepts a string as an argument that is to be searched for
a pattern.
.cm declare
Will not modify a shell variable that has already been declared at the
current level.
.cm declared
No longer decides whether a shell variable is "declared" if an illegal
lexical level offset is supplied.
.cm define
Finally does what the documentation says it will do.
.cm diff
A "-b" option has been added to allow direct binary comparison of
files.
(Note that files that compare "equal" under the usual text comparison
may not be equal under the binary comparison, because of blank
compression.)
.cm e
Takes 'se' options as arguments and uses new terminal type handling.
.cm f77c
New "-w" option to generate floating round instructions which improves
the accuracy of single precision floating point calculations.
.cm fc
New "-w" option to generate floating round instructions which improves
the accuracy of single precision floating point calculations.
.cm file
No longer returns "-1" when it could not perform a test on
a file; it returns a zero, which is in accordance to the
documentation.  An error message is written to ERROUT for this
case.
.cm fmt
New ".eo" and ".oo" commands to specify different page offsets
for even- and odd-numbered pages.
.sp
Documented the ".dv" (divert stream)
command which, when used in conjunction with ".so", can produce
an automatic table of contents.
.cm guess
Requires an argument that is the command name to be used and
optionally accepts a "tolerence" level.
.cm guide
Version[bl]8 Conversion Guide now available.
.cm hd
New "-n" and "-u" options to display "normalized" (440 words/record)
or "unnormalized" (1024 words per record) record counts, respectively.
.cm help
Documented the "-u" option to print usage for command(s).
.sp
'Help' now uses 'page' for paging so you can use all the responses
acceptable to 'page'.
.cm ld
The templates "=cm_loc=" and "=tp_loc=" are checked to allow overriding
the default segment numbers for Subsystem common blocks and template
storage areas.
This is useful if you are modifying the Subsystem and must run
a production copy and a development copy side-by-side.
.cm lf
New "-q" option to print nonowner password.
.cm mail
Mail is saved in the file defined by the template "=mailfile=".  The
Subsystem default is "=varsdir=/.mail".
.sp
Checks for valid addressee name(s) before reading the letter to be
sent.
.cm mkclist
New "-s" argument to create the system defined command list
("=ubin=" is ignored).
.cm moot
An "index" command has been added to summarize the entries that
have been made in the current conference.
.cm mt
'Mt' has been heavily modified to fix all known bugs.
.sp
New "-v" option to cause 'mt' to print the number of blocks
read or written.
.cm plgc
New "-w" option to generate floating round instructions which improves
the accuracy of single precision floating point calculations.
.cm print
New "-i" option to indent listing, "-j" option to cause
'print' to put a FORMFEED character at the end of a page
instead of generating the number a blank lines required
to get to the top of the next page, and a "-l" option to
indicate the number of lines per page.
.cm publish
A warning is now issued if you interrupt a 'publish' (interrupting
a 'publish' has possible harmful side effects).
.cm retract
A "-q" option has been added to allow retraction of a news article
without printing a retraction notice.
.cm rp
Declarations are now handled as a separate data stream.
.sp
You can now put statements in your Ratfor program that
will not be touched by 'rp' and you can indicate if those
statements are to be routed to the "declaration", "data", or "code"
stream.
.sp
A "-g" option has been added to invoke an algorithm that tries to
eliminate chains of GOTO statements.
(When this was applied to the preprocessor itself, a 10% speedup
resulted.)
.sp
New "-x" option and a accompanying translation table
can be used for user definable character code translation.
.sp
A new "-y" option is available that causes 'rp' to
not place "call[bl]init" and "call[bl]swt" statements in the
Fortran code.
.sp
Several internal speed-up improvements have been made.
.sp
String tables now allow multiple slashes, causing marginal index
entries to be duplicated. The maximum string table size has been
increased.
.sp
The standard Ratfor macro definitions file
now includes "SET_OF_GRAPHICS"
and "SET_OF_SPECIAL_CHAR" for use in "when" clauses in Ratfor.
.cm sema
Now handles named and negative (Primos system) semaphores.
.cm stacc
A "null token" construct (epsilon) has been added to cause a
match without scanning any input.
.sp
A "quick select" construct has been added to permit fast selection
between a number of alternatives beginning with distinct terminal
symbols.
.sp
General processing speed has been improved by eliminating the use
of temporary files.
.sp
'Stacc' can now generate code in the C programming language, as well
as Ratfor.  The Reference Manual entry has been corrected so that
it no longer indicates that SSPL, Pascal, and PLP are supported
(they are not).
.cm tail
Now correctly accepts a filename as an argument, even if it is
the only argument (before, 'tail' would try to convert the lone
file name as the number of lines parameter, get an error in the
conversion, and end up reading the default number of lines from
standard input).
.cm tlit
Running time has been improved drastically.
.sp
For compatibility with 'take', 'drop', and other command line
utility functions, 'tlit' can also
accept strings as arguments to be transliterated.
.cm to
The header line format has been changed, to provide more information.
.cm translang
Added the "nor" operator, which was inadvertently left out of
the lexical analyzer.
.cm who
Changed to call the new Primos GMETR$ to access the system data
bases.
.sp
An "r" flag is appended onto the pid if the user is a remote
user.
.in -10
.ne 40
.SH "Unchanged Commands"
This subsection lists the commands that have no user-visible
changes made for Version[bl]8.
.be 37
.tc \
.ta 15 30 45
.bf 1000
alarm\arg\args
argsto\as11\as6800
as8080\banner\basys
batch\block\bs
bug\bye\cal
case\cat\cd
chat\chown\clear
clock\cmp\cn
col\common\como
copy\copyout\cp
crypt\ctime\cto
date\day\declared
del\detab\dmach
dnum\drop\echo
ek\else\entab
error\esac\eval
exit\f77cl\fcl
fdmp\fi\field
files\find\fixp
fmt\focld\forget
fos\fsize\goto
history\hp\if
imi\include\index
installation\intel\iota
join\kill\kwic
lam\ld\length
lex\lib\line
link\lk\locate
log\login_name\lps
macro\memo\mkclist
mkdir\mklib\mktree
mkusr\mot\mv
nargs\news\opt6800
opt8080\os\out
p4c\p4cl\passwd
pause\pc\pcl
ph\phist\phone
plgcl\pmac\pmacl
pr\print\profile
publish\pwd\pword
quote\rcl\rf
rfl\rmusr\rnd
rot\rsa\save
scroll\sep\set
sh\show\shtrace
size\slice\sort
source\sp\speling
sspl\ssr\st_profile
stats\stop\subscribe
substr\symbols\systat
take\tc\tee
template\then\time
ts\uniq\unoct
unrot\us\usage
vars\when\whereis
whois\xref
.bf 0
.ee
.SH "New Commands"
This subsection lists commands that are new for Version[bl]8.
.in +10
.cm basename
Select various portions of a pathname.
.cm bmerge
Merge object code files into one file for building a library.
.cm bnames
Print entry point names in object files.
.cm bs1
Identical to 'bs' except that it reduces search time,
with the possible result of having a less intelligent guess.
.cm bugfm
Format a bug report created with the 'bug' command.
.cm bugn
Process the highest bug number.
.cm cc
Compiles a C program with the Subsystem C compiler.
.cm ccl
Compiles and loads a C program.
.cm cdmlc
Compiles a Prime DBMS Cobol Data Manipulation Language program.
.cm cdmlcl
Compiles and loads a DBMS Cobol Data Manipulation Language program.
.cm cobc
Compiles a Cobol program.
.cm cobcl
Compiles and loads a Cobol program.
.cm csubc
Compiles a Primos DBMS Cobol subschema.
.cm dbg
Interface to Primos source level debugger.
.cm ddlc
Compiles a Prime DBMS schema.
.cm des
An implementation of the National Bureau of Standards Data Encryption
System.
.cm dump
Debugging aid which dumps the shell's various internal data bases
in a semi-readable format.  This command supersedes the Version[bl]7.1
commands 'dumpls' and 'dumpsv'.
.cm fdmlc
Compiles a program written in the Prime DBMS Fortran Data
Manipulation Language.
.cm fdmlcl
Compiles and loads a Prime DBMS Fortran Data Manipulation Language
program.
.cm fsubc
Compiles a Primos DBMS Fortran subschema.
.cm last
Allows you to look at the last few lines of a file.
.sp
Can also count the number of lines in a file very quickly.
.cm mkcl
Make a command list in compressed binary format for use with the
'guess' command.
.cm old_ar
Subsystem archiver from Version[bl]7.1; included to allow you
to retrieve your files and convert to the new archiver, 'ar'.
.cm plpc
Compiles a PL/P program.
.cm plpcl
Compiles and loads a PL/P program.
.cm primos
Allows the use of the Primos command interpreter from the Subsystem.
This command is somewhat different from the 'x' command, in that
'primos' causes a new level of the Primos command interpreter to
be initiated.
.cm radix
Convert numbers from one radix representation to another.
.cm raid
Examine bug report submitted with 'bug' command (this is intended
for the use of the Subsystem manager).
.sp
The bug reports can also be optionally be printed so that a
hardcopy may be obtained.
.cm rdcat
Relational database command which concatenates two identical
relations.
.cm rdextr
Relational database command which extracts relation data from
a given relation.
.cm rdjoin
Relational database command which joins two relations.
.cm rdmake
Relational database command which constructs a relation from a
data file.
.cm rdprint
Relational database command to print a relation or a relation
descriptor.
.cm rdproj
Relational database command to project a relation.
.cm rdsel
Relational database command to select tuples of a relation.
.cm rdsort
Relational database command to sort a relation.
.cm rduniq
Relational database command to remove duplicate tuples from a
relation.
.cm sol
Game of solitaire.  A good demonstration of the new Virtual Terminal
Handler (VTH) package.
.ne 5
.cm spell
Faster than 'speling'.
.sp
Has a "verbose" output format to aid in locating misspelled words.
.sp
Is more intelligent about not reporting formatter commands as
misspelled words.
.cm tip
Check if terminal input is pending.
.cm vpsd
Interface to invoke the Primos V-mode Symbolic Debugger on Subsystem
programs.
.in -10
.MH "Status of Version 7.1 Subroutines"
This section summarizes the user-visible changes to
the Subsystem library routines.
It is divided into several subsections:
obsolete routines, superseded routines, modified routines,
enhanced routines, unchanged routines and new routines.
.SH "Obsolete Routines"
The routines listed here were only used by other library
routines.  Since their services are no longer required, they
have been deleted.
.in +10
.cm cmdf$$
Obsoleted because of a smarter shell.
.cm rtr6800
The SSPL run-time support library for the M6800 microprocessor has
been removed.
.cm vt$bc
Obsoleted by the new VTH routines.
.cm vt$cc
Obsoleted by the new VTH routines.
.cm vt$ld
Obsoleted by the new VTH routines.
.cm vt$ll
Obsoleted by the new VTH routines.
.cm vt$mv
Obsoleted by the new VTH routines.
.cm vt$pk
Obsoleted by the new VTH routines.
.cm vt$rc
Obsoleted by the new VTH routines.
.cm vt$upk
Obsoleted by the new VTH routines.
.cm vtceol
Obsoleted by the new VTH routines.
.cm vtceos
Obsoleted by the new VTH routines.
.cm vtenc
Obsoleted by the new VTH routines.
.cm vtinl
Obsoleted by the new VTH routines.
.cm vtins
Obsoleted by the new VTH routines.
.cm vtmvdn
Obsoleted by the new VTH routines.
.cm vtmvlf
Obsoleted by the new VTH routines.
.cm vtmvrt
Obsoleted by the new VTH routines.
.cm vtmvup
Obsoleted by the new VTH routines.
.cm vtpos
Obsoleted by the new VTH routines.
.in -10
.SH "Superseded Routines"
The following routines have
been subsumed by other more powerful routines.
Each entry
names the Version[bl]8 routine that performs the same function.
.in +10
.cm inloc$
Use 'decode'.
.cm itoc0
Use 'gitoc' or 'encode'.
.cm itoc8
Use 'gitoc' or 'encode'.
.cm prot$
Use 'sprot$'.  The name was changed to avoid a conflict with
the Primos routine of the same name.
.in -10
.SH "Modified Routines"
The routines listed in this subsection have been modified so
that they are no longer compatible with their Version[bl]7.1
counterparts.  Although each entry briefly describes the
changes that have been made, you should examine the corresponding
Reference Manual entries to determine the exact behavior
of the routines.
.in +10
.cm cof$
Requires a "state" argument.
.cm enter
'Enter' is now a function that returns a pointer to the dynamic
storage area containing text of next symbol.
.cm expand
If a template must contain uninterpreted "="s, do not
precede it by a "@" but by another "=".
.cm iofl$
Requires a "state" argument.
.cm sys$$
New argument to specify file unit from which the Primos command
takes its input.
.cm tscan$
The 'path' argument is changed by this routine, but was not
documented to say so.  The documentation has been changed.
.cm vt$db
Has been rewritten for new VTH library.
.cm vt$del
Has been rewritten for new VTH library.
.cm vt$out
Has been rewritten for new VTH library.
.cm vtclr
Has been rewritten for new VTH library.
.cm vtinit
Has been rewritten for new VTH library.
.cm vtputl
Has been rewritten for new VTH library.
.cm vtterm
Has been rewritten for new VTH library.
.cm vtupd
Has been rewritten for new VTH library.
.in -10
.SH "Enhanced Routines"
The routines listed in this subsection have additional
functionality in the Version[bl]8 release, but remain
compatible with their Version[bl]7.1 counterparts.
.in +10
.cm call$$
Accepts an optional argument for the creation of an on-unit.
.cm date
There are now system defines for the request keys (so that
actual numbers for the type of request need not be supplied).
.sp
New values returned are minutes, seconds and
milliseconds past midnight.
.cm dopen$
Now takes an argument to determine the number of
retries on encountering a "file in use" situation.
.cm getto
MFD passwords are now consistently assumed to be "XXXXXX".
Mixed-case passwords have caused several problems; the real
source of the difficulty is a change Prime made to TA$ that
renders it incompatible with earlier revisions of Primos.
.cm lopen$
Will put in the values for the user's shell variables "_prt_form"
and "_prt_dest", if available, in the spooler entry.
.cm open
Now takes a fourth argument to determine the number of
retries on encountering a "file in use" situation.
.in -10
.ne 50
.SH "Unchanged Routines"
No user-visible changes have been made to the routines listed
in this subsection.
.be 30
.tc \
.ta 15 30 45
.bf 1000
addset\amatch\atoc
c$end\c$incr\cant
catsub\chkarg\chkinp
close\cpfil$\cpseg$
create\ctoa\ctoc
ctod\ctoi\ctol
ctomn\ctop\ctor
ctov\decode\delarg
delete\dgetl$\dmark$
dodash\dputl$\dread$
dsdbiu\dsdump\dseek$
dsfree\dsget\dsinit
dtoc\dwrit$\edit
encode\enter\equal
error\esc\exec
execn\fcopy\filcpy
filset\filtst\findf$
finfo$\flush$\follow
gcd\gcdir$\gctoi
gctol\getarg\getccl
getch\getkwd\getlin
getto\getvdn\gfnarg
gitoc\gklarg\gltoc
gtemp\gvlarg\icomn$
index\init\input
invmod\ioinit\isatty
itoc\jdate\ldseg$
ldtmp$\length\locate
lookup\lsallo\lscmpk
lscomp\lscopy\lscut
lsdel\lsdrop\lsdump
lsextr\lsfree\lsgetc
lsgetf\lsinit\lsins
lsjoin\lslen\lsmake
lspos\lsputc\lsputf
lssubs\lstake\ltoc
lutemp\makpat\maksub
mapdn\mapfd\mapstr
mapsu\mapup\markf
match\mkdir$\mkfd$
mkpa$\mktabl\mktemp
mktr$\mntoc\move$
omatch\open\page
parsdt\parstm\patsiz
prime\print\ptoc
putch\putdec\putlin
putlit\pwrmod\readf
remark\remove\reonu$
rewind\rmfil$\rmseg$
rmtabl\rmtemp\rtn$$
rtoc\scopy\sctabl
sdrop\seekf\set_copy
set_create\set_delete\set_element
set_equal\set_init\set_insert
set_intersect\set_remove\set_subset
set_subtract\set_union\seterr
st$lu\stake\stclos
strbsr\strcmp\strim
strlsr\substr\swt
t$clup\t$entr\t$exit
t$time\t$trac\tgetl$
tmark$\tputl$\tquit$
tread$\trunc\tseek$
twrit$\type\upkfn$
vfyusr\vtoc\wind
wkday\writef\zmem$
.bf 0
.ee
.ta
.tc
.SH "New Routines"
The routines listed in this section are new for the Version[bl]8
release.
.in +10
.cm at$
Subsystem interlude to Primos ATCH$$.
.cm bponu$
On-unit handler for "BAD_PASSWORD$" condition.
.cm c$init
Initializes a Ratfor program in preparation for a statement count
run.
.cm chkstr
Check a string for printable characters.
.cm dmpcm$
Dump the contents of Subsystem common blocks in a printable format.
.cm dmpfd$
Dump information about a file descriptor.
.cm file$p
When called from a Pascal program, allows the program to use
the I/O redirection and piping features of the Subsystem.
.cm first$
This routine sees if it has been called before; it is used by
the Subsystem for initialization purposes.
.cm gcifu$
Get the file unit which is providing command input to the shell.
.cm geta$f
Allows Fortran programs access to the arguments from the Subsystem
command line.
.cm geta$p
Allows Pascal programs to access the arguments from the Subsystem
command line.
.cm geta$plg
Allows PL/I (subset G) programs to access the arguments from the
Subsystem command line.
.cm getfd$
Look for an empty file descriptor.
.cm getwrd
Retrieve the next word from a buffer.
.cm gfnam$
Get pathname of an open file.
.cm gtattr
Returns a user's terminal attributes.
.cm gttype
Returns the user's terminal type name.
.cm init$f
Allows the Fortran programmer to take advantage of Subsystem I/O
(especially the standard input and output ports).
.cm init$p
Allows the Pascal programmer to take advantage of Subsystem I/O
(especially the standard input and output ports).
.cm init$plg
Allows the PL/I (subset G) programmer to take advantage of Subsystem
I/O (especially the standard input and output ports).
.cm isadsk
Test to see if a file is a disk file.
.cm sprot$
Set the protection attributes for a file.  This routine used to be
named 'prot$', but had to be renamed because of a name conflict with
a Primos routine.
.cm tcook$
Read a line from the terminal and handle operations of
processing escape sequences, case and character set mapping,
line kills, etc. ("cooking" the line).
.cm ttyp$f
Obtain the user's terminal type from the "=termlist=" file,
if available.
.cm ttyp$l
List the available terminal types (as defined in the "=ttypes="
file).
.cm ttyp$q
Query for the terminal type from the user.
.cm ttyp$r
Return the user's terminal type from the Subsystem common area,
if available.
.cm ttyp$v
Set the terminal's attributes in the Subsystem common areas.
.cm vt$alc
Allocate another VTH definition table for the keyboard macros.
.cm vt$clr
Send the clear screen sequence.
.cm vt$db1
VTH debugging routine which prints mnemonics for the unprintable
characters to be output.
.cm vt$db2
VTH debugging routine to dump the terminal input tables.
.cm vt$db3
VTH debugging routine to dump the macro definition table.
.cm vt$def
Allows the user to define a keyboard macro.
.cm vt$dsw
Perform a garbage collection on the VTH definition tables.
.cm vt$err
Print a VTH error message.
.cm vt$get
VTH input routine.
.cm vt$gsq
VTH input routine to receive a delimited sequence of characters.
.cm vt$idf
VTH input processor which invokes user-defined keyboard macros.
.cm vt$ier
Report an error in a VTH initialization file.
.cm vt$ndf
Remove a VTH macro definition.
.cm vt$pos
VTH positioning routine which moves the terminal cursor by means
of absolute positioning sequences.
.cm vt$put
Copy a string into a VTH screen buffer.
.cm vt$rdf
Remove a VTH keyboard macro from the definition table.
.cm vtenb
Enable input on a particular screen line.
.cm vtgetl
Retrieve a line from the VTH screen buffer.
.cm vtinfo
Return information contained in the VTH common block.
.cm vtmove
Position the cursor to a given row and column.
.cm vtmsg
Display a message in the VTH status line.
.cm vtopt
Set optional parameters for the VTH screen.
.cm vtpad
Pad the rest of a field with blanks.
.cm vtprt
Output formatted information to the screen buffers.
.cm vtread
Read characters from the terminal into the screen buffers.
.cm vtstop
Reset a terminal's attributes before terminating a program.
.in -10
.bp
.he
.fo
.op
.pn 3
.TC