About
The programs from Einstein User Vol 5 No 1, on one bootable Xtal BASIC disc.
Philip Lord's DEF11 lets you draw on a 32 by 32 grid, turn the drawing into a block of characters or a sprite, and read off the hex codes for your own programs. Pages 21 to 24.
The Editor's Triangle Power, the issue's competition program, grows a Sierpinski triangle one point at a time, and an uncredited heart and arrow picture shows what sixteen characters and four sprites can do. The magazine gives no file names for these two; TRIPOWER and HEART are ours.
John Sewell's Teamquiz, a quiz night teams and scores manager, is included as printed, but it does not run: it needs a machine code file, QUIZ.OBJ, that was only ever on B & H's own listings disk and was never printed.
Running them
Boot the disc, type XBAS, then LOAD "DEF11" and RUN, or TRIPOWER or HEART.
What is in the download
A zip holding the disc 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 saying exactly what was changed and why, and the test notes and screenshots.
Verified
Run in MAME 0.289 with Xtal BASIC 4.2. All four programs loaded into BASIC and saved back give the same program bytes as ours. TRIPOWER, HEART and DEF11 run as printed; DEF11's grid, drawing, characters and hex read out were checked against what was drawn. TEAMQUIZ stops when it tries to load its missing machine code. Not run on real hardware.
The scanned issue is on this site as Tatung Einstein User Vol.5.No.1.
Gallery
