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update basic360 page

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Greg Gauthier 2025-01-16 16:48:24 +00:00
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md/MVS/basic.md
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There are many flavors of BASIC available for the IBM MVS operating system. The original port of Dartmouth BASIC, known as DTSS BASIC, is called BASIC/360, and is already implemented by the supplement tape for MVS 3.8j. So, everything I do on the emulator is based on that version of BASIC.
More to follow...
Here's the original comment flower box from the core BASIC/360 compiler module, written in PL/I. The users of this BASIC compiler did not need to compile th PL/I from source, however. The binary would have been available on the original distribution tape.
```pli
000002 /********************************************************************
000003 * *
000004 * SOUTH HAMMOND INSTITUTE OF TECHNOLOGY BASIC/360 FALL 1974 *
000005 * *
000006 *********************************************************************
000007 * *
000008 * IMPLEMENT A BASIC COMPILER/INTERPRETER FOR THE IBM/360 *
000009 * USING THE ORIGINAL DARTMOUTH SPECS FOR BASIC. THE PRIMARY *
000010 * INTENT IS TO CREATE A BASIC COMPILER/INTERPRETER FOR BEGINNING *
000011 * STUDENTS TO LEARN THE BASIC LANGUAGE INSTEAD OF GOTRAN ON THE *
000012 * SOON TO BE RETIRED 1620. *
000013 * *
000014 * THE TARGET ENVIRONMENT IS A 32K IBM/360 MOD 30 RUNNING *
000015 * DOS/360 AND PL/I(D) COMPILER. *
000016 * *
000017 * STUDENTS MAY NOT BE COMPUTER MAJORS AND MOST PROGRAMS WOULD BE *
000018 * SMALL, A SIMPLE MONITOR MONITOR WAS IMPLEMENTED SO THE LAB AID *
000019 * OR INSTRUCTOR COULD ACTUALLY SUBMIT ALL THE BASIC PROGRAMS AS *
000020 * ONE JOB. *
000021 * *
000022 * THIS PACKAGE IS BEING DESIGNED TO HAVE MODULAR SOURCE CODE *
000023 * SINCE IT ENVISIONED THAT THIS PRODUCT WILL BE IMPLEMENTED *
000024 * IN SEVERAL DIFFERENT ENVIRONMENTS *
000025 * 1) SIMPLE BATCH - 1 BASIC PROGRAM AT A TIME *
000026 * 2) MONITOR BATCH - MULTIPLE BASIC PROGRAMS CAN BE EXECUTED *
000027 * PER RUN. *
000028 * 3) ONLINE (WISH) - BASIC PROGRAM CAN BE ENTERED, EDITED AND *
000029 * EXECUTED ON LINE. *
000030 * *
000031 ********************************************************************/
```