[unix-history] / usr / doc / pascal / puman0.n

.so tmac.p
.RP
.TL
Berkeley Pascal User's Manual
.br
Version 1.1 \- April, 1979
.AU
William N. Joy*
.AU
Susan L. Graham*
.AU
Charles B. Haley**
.AI
Computer Science Division
.if n Department of Electrical Engineering
.if n and Computer Science
.if t Department of Electrical Engineering and Computer Science
University of California, Berkeley
Berkeley, California  94720
...AI
...MH
.AB
.FS
\s-2(C)\s0 1977, 1979 William N. Joy, Susan L. Graham, Charles B. Haley
.FE
.FS
* Author's current address: S & B Associates, 1110 Centennial Ave., Piscataway, NJ  08854
.FE
.PP
Berkeley
Pascal
is designed for interactive instructional use
and runs on the \s-2PDP\s0/11 and \s-2VAX\s0/11 computers.
It produces interpretive code,
providing fast translation at the expense of slower execution speed.
An execution profiler and
Wirth's cross reference program are also
available with the system.
..An interpretive implementation for the \s-2VAX\s0 11/780 is nearly complete,
..and a compiled version of the system, utilizing the code generator of
..the portable C compiler, is under construction, and should be completed by
..September, 1979.
.PP
The system supports full Pascal, with the exception of
.B procedure
and
.B function
names as parameters.
The language accepted is very close to
`standard' Pascal,
with only a small number of extensions.
.PP
The
.UM
gives a list of sources relating to the
.UX
system, the Pascal language, and the
.UP
system.
Basic usage examples are provided for the Pascal
interpreter components
.PI ,
.X ,
.IX ,
and
.XP .
Errors commonly encountered in these programs are discussed.
Details are given of special considerations due to the
interactive implementation.
A number of examples are provided including many dealing with
input/output.  An appendix supplements Wirth's
.I "Pascal Report"
to form the full definition of the Berkeley implementation of the language.
.AE
.ND
.SH
'if n 'ND
Introduction
.PP
.FS
* The financial support of the first and second authors' work by
the National Science Foundation under grants
MCS74-07644-A03 and MCS78-07291,
and the first author's work by an
.SM IBM
Graduate Fellowship
are gratefully acknowledged.
.FE
.FS
** Author's present address: Bell Laboratories, Murray Hill, NJ  07974.
.FE
The
.UP
.UM
consists of five major sections and an appendix.
In section 1 we give sources of information about 
.UX ,
about the programming
language Pascal, and about the
Berkeley
implementation of the language.
Section 2 introduces the
Berkeley
implementation and provides a number of basic examples.
Section 3 discusses the error diagnostics produced by the translator
.PI
and the runtime interpreter
.X .
Section 4 describes input/output with special attention given to features
of the interactive implementation and to features unique to
.UX .
Section 5 gives details on the components of the system
and explanation of all relevant options.
The
.UM
concludes with an appendix to Wirth's
.I "Pascal Report"
with which it forms a precise definition of the implementation.
.SH
History of the implementation
.PP
The first
Berkeley
system was written by Ken Thompson in early 1976.
The main features of the present system result from the work
of Charles Haley and William Joy during the latter half of 1976.
Earlier versions of this system have been in use since January, 1977.
.PP
The system was moved to the \s-2VAX\s0-11 by Peter Kessler and
Kirk McKusick in the spring of 1979.
Commit	Line	Data
243df2f9 BJ	1	.so tmac.p
	2	.RP
	3	.TL
	4	Berkeley Pascal User's Manual
	5	.br
	6	Version 1.1 \- April, 1979
	7	.AU
	8	William N. Joy*
	9	.AU
	10	Susan L. Graham*
	11	.AU
	12	Charles B. Haley**
	13	.AI
	14	Computer Science Division
	15	.if n Department of Electrical Engineering
	16	.if n and Computer Science
	17	.if t Department of Electrical Engineering and Computer Science
	18	University of California, Berkeley
	19	Berkeley, California 94720
	20	...AI
	21	...MH
	22	.AB
	23	.FS
	24	\s-2(C)\s0 1977, 1979 William N. Joy, Susan L. Graham, Charles B. Haley
	25	.FE
	26	.FS
	27	* Author's current address: S & B Associates, 1110 Centennial Ave., Piscataway, NJ 08854
	28	.FE
	29	.PP
	30	Berkeley
	31	Pascal
	32	is designed for interactive instructional use
	33	and runs on the \s-2PDP\s0/11 and \s-2VAX\s0/11 computers.
	34	It produces interpretive code,
	35	providing fast translation at the expense of slower execution speed.
	36	An execution profiler and
	37	Wirth's cross reference program are also
	38	available with the system.
	39	..An interpretive implementation for the \s-2VAX\s0 11/780 is nearly complete,
	40	..and a compiled version of the system, utilizing the code generator of
	41	..the portable C compiler, is under construction, and should be completed by
	42	..September, 1979.
	43	.PP
	44	The system supports full Pascal, with the exception of
	45	.B procedure
	46	and
	47	.B function
	48	names as parameters.
	49	The language accepted is very close to
	50	`standard' Pascal,
	51	with only a small number of extensions.
	52	.PP
	53	The
	54	.UM
	55	gives a list of sources relating to the
	56	.UX
	57	system, the Pascal language, and the
	58	.UP
	59	system.
	60	Basic usage examples are provided for the Pascal
	61	interpreter components
	62	.PI ,
	63	.X ,
	64	.IX ,
65	and
66	.XP .
67	Errors commonly encountered in these programs are discussed.
68	Details are given of special considerations due to the
69	interactive implementation.
70	A number of examples are provided including many dealing with
71	input/output. An appendix supplements Wirth's
72	.I "Pascal Report"
73	to form the full definition of the Berkeley implementation of the language.
74	.AE
75	.ND
76	.SH
77	'if n 'ND
78	Introduction
79	.PP
80	.FS
81	* The financial support of the first and second authors' work by
82	the National Science Foundation under grants
83	MCS74-07644-A03 and MCS78-07291,
84	and the first author's work by an
85	.SM IBM
86	Graduate Fellowship
87	are gratefully acknowledged.
88	.FE
89	.FS
90	** Author's present address: Bell Laboratories, Murray Hill, NJ 07974.
91	.FE
92	The
93	.UP
94	.UM
95	consists of five major sections and an appendix.
96	In section 1 we give sources of information about
97	.UX ,
98	about the programming
99	language Pascal, and about the
100	Berkeley
101	implementation of the language.
102	Section 2 introduces the
103	Berkeley
104	implementation and provides a number of basic examples.
105	Section 3 discusses the error diagnostics produced by the translator
106	.PI
107	and the runtime interpreter
108	.X .
109	Section 4 describes input/output with special attention given to features
110	of the interactive implementation and to features unique to
111	.UX .
112	Section 5 gives details on the components of the system
113	and explanation of all relevant options.
114	The
115	.UM
116	concludes with an appendix to Wirth's
117	.I "Pascal Report"
118	with which it forms a precise definition of the implementation.
119	.SH
120	History of the implementation
121	.PP
122	The first
123	Berkeley
124	system was written by Ken Thompson in early 1976.
125	The main features of the present system result from the work
126	of Charles Haley and William Joy during the latter half of 1976.
127	Earlier versions of this system have been in use since January, 1977.
128	.PP
129	The system was moved to the \s-2VAX\s0-11 by Peter Kessler and
130	Kirk McKusick in the spring of 1979.