CEI Apple II Programmer

The CEI Apple II Programming System is a collection of programming software used to program Rock-afire Explosion shows starting around 1982, and continuing to present day to some capacity, with some functions being supplanted by the RAE Show Programmer.

The original prototype of this system was designed and written around early 1982 by Aaron Fechter for the Apple II+ after his dissatisfaction with his engineers' attempts to replace the CEI Multitrack Programmer with a logic gate-based programmer, citing an overly complex design that is nearly impossible to troubleshoot. The software was improved upon by other programmers through the years to add features and simplify operation, with major upgrades coming in 1983 following the release of the Apple IIe, utilizing its superior hardware capabilities. The current and final iteration was completed around 1993.

Programmer
TODO: Basic information, user input, cassette control, show data raw format, lesser known features

Block Number Reader
The Block Number Reader program decodes a proprietary time code signal, known as Block Numbers, which was originally dubbed onto the third track of a four-track audio cassette also containing the audio for the show on the first two tracks, but is now striped onto an audio file played from a Windows PC. Basic Block Number decoding takes place in hardware on a custom Apple II interface card, with final processing taking place within the software. Prior to transmission to the programmer computer, software algorithms detect and correct errors in the decoded Block Number, usually caused by physical deformities of the cassette tape, to prevent dropouts during programming. Once decoded and corrected where necessary, Block Numbers are transmitted to the main programmer computer through the use of two custom interface cards, one in each Apple IIe. Two computers were used because speed limitations of computers of the early 1980's prevented one computer from being able to decode Block Numbers and handle all other programming functions simultaneously.

Included on the same floppy disk is a "Block Number Generator" program which is used when creating a programming audio cassette. Early versions of the Block Number Reader operated like normal Apple II programs, but later versions from the late 80's through the 90's were wrapped in the Apple II version of the Anti Gravity Freedom Machine operating system and require a CEI light pen with accompanying interface card to select menu options.