About
The programs from Einstein Magazine No. 77, the user group's 76 page Tenth Birthday Compendium of 1995, typed in and on one bootable Xtal BASIC disc.
Map, by David Williams, puts a flashing cursor on a map of Great Britain and asks which of five named towns it marks. Twenty goes a game, and a medal for eighteen. His Barchart charts ten values with the average marked, and his Plotter draws a line plot of up to 45 values, typed a digit at a time.
Colour Blender, by Shaun Jeffery, mixes two of the Einstein's sixteen colours through a pattern to make more: three patterns built in, or type your own as hex.
Label Printer, by Stuart Marshall, prints a disc's directory as a label with side B upside down, so both sides read the right way up once the label is folded. As printed it calls a printer dump the author had patched into his DOS 1.31, so on an unpatched machine it stops in the MOS monitor; it is here as printed as LABEL, and again as LABEL2 with that call replaced by a keypress so the label shows on screen.
The listings were printed on pages 35 to 44 of the magazine, which is on this site as Einstein Magazine No. 077, Tenth Birthday Compendium. This disc saves you typing them in.
Running Them
Boot the disc, type XBAS, then LOAD "MAP", LOAD "BARCHART", LOAD "PLOTTER", LOAD "BLENDER" or LOAD "LABEL2", and RUN.
What Is in the Download
A zip holding the disc image as a DSK, the same disc as an MFI for MAME to write to, the listings as BASIC text and as tokenised Xtal BASIC, a README with the full account of each program, and the screen captures and MAME scripts used to test them.
Verified
Transcribed from the page images and run on the Einstein in MAME 0.289 with Xtal BASIC 4.2. Every program was loaded into BASIC and saved back, giving the same bytes as our files. All five run as the magazine describes, and Colour Blender's screen matches the screen dump printed with it. Not run on real hardware, and no printer.
Kept as Printed, and One Change
Everything is as printed except LABEL2, which is our addition, and one line of LABEL: line 2 carried the author's home address, and the disc has it with his name only. The issue's machine code, none of which has checksums (the DOS 1.31 printer dump patch, COL256, ALTERWP and the burglar alarm code), is not included.
The programs are their authors', published in Einstein Magazine in 1995.
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