Tweaks to TODO, README and some comments

README.md

@@ -2,7 +2,7 @@
 
 ## Bundling for the browser
 
-We use `browserify`; see `Makefile` for the invocation.
+js-8080-sim uses `browserify`; see `Makefile` for the invocation.
 
 The files `index.html`, `ui.js` and `js8080simBundle.js` should be distributed
 together to make it all work in the browser.

TODO

@@ -1,10 +1,3 @@
-* Show assembled labels?
-
-* CPU8080 has global state, which sucks. Refactor it, but after I have it
-  working to avoid distraction.
-
-* Create a UI similar to https://schweigi.github.io/assembler-simulator/
-
 Links:
 
 * Instruction encoding: http://www.classiccmp.org/dunfield/r/8080.txt

test/test.js

@@ -11,7 +11,9 @@ const CPU8080 = require('../src/sim8080');
 // [cpu state, memory map] after the program halts.
 // If maxSteps is provided, runs up to maxSteps steps (otherwise a default upper
 // limit is applied to avoid hanging).
-// TODO: it sucks that CPU8080 manipulates global state; fix it.
+//
+// Note: CPU8080 uses global state. It's important to call init() every time
+// we start a new simulation. Multiple simulations cannot run concurrently.
 function runProg(progText, maxSteps) {
   let p = new Parser();
   let asm = new Assembler();