Overview WRLDWTCH – World WATCH for MVS38J / Hercules(current version 0.9.00 2018-09-22) ** WRLDWTCH and ISPF Limitation ** Due to a DISPLAY element limitation in ISPF v2.2 when using a model 2 (24×80) terminal session, the display will fail and not display correctly. Other 3270 terminal modes display correctly.Due to the fixed display content of WRLDWTCH, no temporarily correction is…
Submitting JCL to MVS 3.8J
Preface (updated 2020-01-22) JCL (Job Control Language) decks are used to submit JOBs via a reader device or an online edit session for batch processing on the public domain OS, MVS 3.8J (MVS will be used to mean MVS 3.8J in this post). As a MVS 3.8J hobbyist / enthusiast, the previous statement is elementary and unequivocal. The purpose of…
Using ISPF Table Services in MVS 3.8J
Overview ISPF tables store organized data in virtual storage for temporary residency or DASD for permanent residency as a PDS member in the ISPTABL library. Table services are categorized as 1) table level – action impacting a table, 2) table row level – action impacting a table row, and 3) display level – impacting display of table rows. ISPF tables…
Enhance Printable Character Set for DOS/VS R34 PDUMP, DUMP, JDUMP Macros
Overview In DOS/VS R34, all printable characters were limited to upper-case, numbers, and select special characters as exercised by the DUMP service macros. The DOS/VS Assembler macros PDUMP, DUMP and JDUMP invoke various $$B transient phases to perform the work of printing register values, storage content and other partition/system information. Specifically, hex-to-character translation, a LOW-HIGH range table is searched to…
Calculating Test Scores
Since the inception of spreadsheet applications for the PC desktop computer, tabular reports are easy and quick to create including dynamic calculations (calculation performed in real-time). In my opinion, spreadsheets serve as the best “calculators” alternative when several data items and computations are a necessity. A spreadsheet cannot only perform simple dynamic calculator-type functions, but can incorporate formatting of cells…
Removing commas between double quotes in a CSV file
CSV (Comma Separated Values) data files, as the term implies, contains plain text records with column (field) values separated or delimited by commas. One example of using CSV files includes data exchange between applications and/or computing platforms. Writing a script to extract CSV data appears to be a straight forward process – simply loading an array with data from each…
Dynamically Add-Remove Text on a Web Page
Sometimes, it may be necessary to display additional information on a web page conditionally facilitated by clicking on a link or icon or button. And, another click to remove (hide) the text on the page. For example, consider the below simple web page to demonstrate the idea: When the button Show more text is clicked, text is added and displayed…
How to Create a Four Function Web Calculator using PERL
Overview It is assumed that the reader has some knowledge of HTML (HyperText Markup Language) and programming logic. Access to reference materials is recommended! The four-function calculator PL (Perl) page uses HTML, CSS and JQuery for web page presentation and Perl programming logic. This application utilizes a client-server architecture where the client (Web Browser) initiates a request by POSTing…
Enable Perl 5.20 on Windows IIS
The IIS configuration dialogues will differ between IIS versions. This post used IIS 6 on Windows Server 2003. 1. Download and Install ActiveState Perl from the Official website https://www.perl.org/ Ensure the correct MSI installer file, 32-bit or 64-bit, is downloaded based on your current Windows operating system. Make note of the installation location. You will need this information later for IIS…
How To Create a Four Function Web Calculator using Python
Overview It is assumed that the reader has some knowledge of HTML (HyperText Markup Language) and programming logic. Access to reference materials is recommended! The four-function calculator PY (Python) page uses HTML, CSS and JQuery for web page presentation and Python programming logic. This application utilizes a client-server architecture where the client (Web Browser) initiates a request by POSTing…