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A/Rexx PoC: using a compound variable as both associative and indexed

Actually, I am not really certain what to call what I am doing here. Essentially, I need a table of values which can be referenced both by number (ordinal) and the value itself (associative.)   I reach back to the TI-99 ISR (interrupt service routine) sound lists for a practical example. I want to create a transform which will increase or decrease tone values by semitones or octaves (12 semitones.) To do that, I have to load the channel sound command, which consists of two bytes, from the l

OLD CS1

OLD CS1

Dumping 99/4A ISR sound list binaries

I have been working on some Rexx scripts to manipulate sound list binary files exported from Rasmus' soundlistripper. I ran into a few problems here and there, and found these problems were mostly due to my experience in ARexx, Amiga REXX, which has some differences compared to various Rexx interpreters. To demonstrate my lacking in "standard" Rexx I went back to basics and wrote a simple dump program.   This is also where the statement OPTIONS AREXX_BIFS AREXX_SEMANTICS comes into play.  

OLD CS1

OLD CS1

The good beige 99/4A keyboard

After alternating between beating and gingerly pressing on my beige 99/4A's God-awful membrane-switched keyboard to obtain desired results -- a key on-screen with no repeats -- I was finally able to locate the leaf-switched type with real beige keys. This was a Radio Shack special I found on eBay and it cost me around $12 shipped.   Originally, I had all of the right hallmarks if looking at the bottom of the keyboard (note, not by looking through the bottom of the console, as the keyboard bot

OLD CS1

OLD CS1

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