CosmOS pre-alpha and launchable application versions of old programs.

Programs/CosmOS/Source/services.asm

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+; The services the system offers, named and numbered.
+;
+; Both sides include this. The system follows it with handlers for the ones it implements.
+; A program that only calls them includes this and nothing else, and can then say them by
+; name, because a line with a name and nothing after it declares what a vector is called
+; and what number it has without claiming to implement it.
+;
+; The order here is what fixes the numbers, and it is fixed in one file, so the two sides
+; cannot disagree about them and nobody has to write a number down. Adding a service goes
+; at the end: putting one in the middle would renumber everything after it, and any
+; program already assembled against the old numbers would call the wrong thing.
+;
+; Written by Anachronaut
+
+#Vectors
+
+  osPrintString         ; DP0 names a string. Prints it.
+  osReadLine            ; DP0 names somewhere to put a line read from the console.
+  osExit                ; Give the machine back to the system.