Editing Apple Pascal (section)

{{Short description|Programming system for Apple II and III}}
{{Infobox OS
| name = Apple Pascal
| screenshot = Apple Pascal 1.2.jpg
| caption = Apple Pascal for Apple II, version 1.2
| developer = [[Apple Inc.|Apple Computer]]
| family = [[UCSD Pascal]]
| source_model = [[Closed source]]
| working_state = Historic
| released = {{Start date and age|1979|08}}
| latest_release_version =  1.3 (Apple II)<br> 1.1 (Apple III)
| latest_release_date = {{Start date and age|1984}}<ref>{{cite web|url=http://apple2info.net/index.php?title%3DApple_II_Pascal |title=Apple II Pascal - apple2info.net: Apple II Information |access-date=April 23, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150430033749/http://apple2info.net/index.php?title=Apple_II_Pascal |archive-date=April 30, 2015 }}</ref>
| kernel_type = [[Kernel (operating system)#Monolithic kernels|Monolithic]]
| license = Apple Software License Agreement
| website =
|}}

'''Apple Pascal''' is an implementation of [[Pascal (programming language)|Pascal]] for the [[Apple II]] and [[Apple III]] computer series, based on [[UCSD Pascal]].<ref>{{harvnb|Apple|1980|p=248}}</ref>
Just like other UCSD Pascal implementations, it ran on its own [[operating system]] (''Apple Pascal Operating System'',<ref>{{harvnb|Apple|1980|p=2}}</ref> a derivative of ''UCSD p-System'' with graphical extensions).

Originally released for the Apple II in August 1979, just after [[Apple DOS]] 3.2, Apple Pascal  pioneered a number of features that would later be incorporated into DOS 3.3, as well as others that would not be seen again until the introduction of [[Apple ProDOS|ProDOS]].

The Apple Pascal software package also included disk maintenance utilities,<ref>{{harvnb|Apple|1980|p=183}}</ref> and an [[Assembly_language#Assembler|assembler]]<ref>{{harvnb|Apple|1980|p=134}}</ref> meant to complement Apple's built-in "monitor" assembler. A [[Fortran|FORTRAN]] [[compiler]]  (written by Silicon Valley Software of [[Sunnyvale, California]]) compiling to the same [[p-code]] as Pascal was also available.<ref>{{Cite web|url = http://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Software/Languages/Apple%20II%20FORTRAN/Manuals/Apple%20FORTRAN%20Language%20Reference%20Manual.pdf|title = Apple Fortran Language Reference Manual|date = |access-date = |website = |publisher = }}</ref>