Multiplan

MULTIPLAN is a spreadsheet application by Microsoft. It was called at former times (1983) one of the most powerful and user-friendly "electronic worksheets" and together with VisiCalc (from Software Arts), a typical CP/M application of its time (late seventies / early eighties).

HARDWARE REQUIREMENTS

The application runs under CP/M with at least one floppy disk drive and a memory of 128 kByte, better with at least 62 Kbytes TPA (free space available under a patched CP/M2.2 or - of course - plus / 3), and a monitor 80 characters per line (which is included by the purchased standard monitors GT & GTM - they managed this resolution by default). Multiplan runs on all CPCs of the old (and new) generation, provided the computers 464 and 664 had a memory expansion (eg. VORTEX, or other, similar additional hardware). A printer could be accessed via the Centronics interface. The operation of a second floppy drive was recommended in terms of a more comfortable work. All files of the original Multiplan version being used on the usual 170 kByte 135 kByte floppy (without operating system).

a MULTIPLAN description in short

THE SCREEN LAYOUT

The maximum size of a single table can theoretically result in 16,065 fields from an array of up to 255 rows and 63 columns (see picture 1) and is about 1.2 MByte deposited without an operating system / just numbers either formula nor text. On a CPC with 128 kbyte memory it can be filled thus 10% or 1500 fields. Here, however, can only be a maximum of eight windows (contiguous sections of a table) be used. Multiple worksheets in a table can be combined to create a connection.

In the same way like his successor, Windows-Excel, it can be entered directly in the fields with text, values ​​or formulas. The field itself can be selected via a row-column coordinate system. The formats of the columns can be changed in a very limited basis (due to text-only presentation). Cells can be assigned names. Areas can be protected against overwriting. The application provides menus for selecting functions or assistance (eg, sorting, iteration, mathematical, numerical, logical functions such as SIN, COS, LN, LOG, MAX, MIN, STDEV, AND, OR, IF / THEN, etc.). Data exchange with other programs (eg, the former WordStar) was possible.

On the top level of the screen (about 80 percent) you will see the table with its row and column indicators. The maximum by default is 7 columns and 19 rows. The first area is highlighted. Changing the area could be done by pressing the cursor keys.

There are two command lines underneath which could be highlighted by the Tab key and activated with Enter key.
The next two lins show the command status and underneath on the left side the actual highlighted area, in the middle free space and on the right side the name of the file.

TABLE LAYOUT AND COMMANDS

The command "ALPHA" it is possible to insert text only. Just press TAB oder the Initial "A" (or in other languages their analog character). If RETURN is pressed the next cell is highlighted. If a CURSOR KEY is pressed the next cell is highlighted AND it is possible to enter a "VALUE" to the corresponding text (= quick method for data input).

VALUES could be a number between 0-9, ",", "=", "+", "-", "(", ")" oder double quotes itself.

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Sources

1. Schneider CPC: Erfolg mit MULTIPLAN by Thorsten Ritter, Publisher: Sybex, 1986
2. MULTIPLAN für den Schneider CPC by Dr. Peter Albrecht, Publisher: Markt & Technik, 1985
3. MICROSOFT MULTIPLAN for the Schneider CPC 464 - 3 inch Disk Format, Original User Manual, Publisher: Markt & Technik, 1985