update to current codebase

README.md

@@ -4,8 +4,6 @@ Yet another Apple //e emulator.
 
 I wrote this not because the world needed another //e emulator, but because I wanted to have the fun of building a thing from scratch to run my old Apple //e software.
 
-At the time of writing, the emulator handles only 40-column text mode and no floppy.
-
 There are several AppleSoft files in this project (`*.A`) that can be copied into the clipboard and then pasted into the emulator window with CMD-V.
 
 Thanks to [Lawrence Kesteloot](http://github.com/lkesteloot) for the original keyboard code, and [Bart Grantham](http://github.com/bartgrantham) for extracting all our old floppy disk images!
@@ -18,7 +16,7 @@ Requirements for building:
 * libao
 * OpenGL 3.2-compatible system
 * C++11
-* Currently the project only builds on MacOSX because of the linker line in `Makefile`.
+* Builds on MacOS using "Makefile" and Linux (tested on Ubuntu only) using "Makefile.linux"
 
 On MacOSX with MacPorts, the GLFW and libao dependency can be satisfied with `glfw` and `libao` ports.  According to https://support.apple.com/en-us/HT202823, all modern Macs have OpenGL 3.2 or later.  On my machine, I've been compiling with a g++ that outputs `Apple LLVM version 8.0.0 (clang-800.0.42.1)` for `g++ -v`.
 
@@ -30,23 +28,23 @@ Options:
 
     -debugger # start in the debugger
     -fast     # start with CPU running as fast as it can run
-    -noaudio  # stream no audio buffers
+    -backspace-is-delete # Backspace key (Delete on Macs) should send DELETE
     -diskII diskIIrom.bin {floppy1image.dsk|none} {floppy2image.dsk|none}
 
 Examples of operation:
 
-    # Use original Apple ][ ROM, no floppy controller,
+    # Use original Apple ][ Integer BASIC ROM, no floppy controller,
     # at maximum available clock rate.
+    apple2e -fast apple2_intbasic.rom
+
+    # Use updated Apple ][ ROM, no floppy controller, and attempt to
+    # run at 1.023 MHz.
     apple2e -fast apple2o.rom
 
     # Use Apple //e ROM, add diskII controller with two floppies,
     # put LodeRunner.dsk in drive 1 and nothing in drive 2. Attempt
     # to run at 1.023 MHz.
-    apple2e -diskII diskII.c600.c67f.bin LodeRunner.dsk none apple2e.rom < /dev/null
-
-    # Use updated Apple ][ ROM, attempt to run at 1.023 MHz, but
-    # don't output audio.
-    apple2e -noaudio apple2.rom
+    apple2e -diskII diskII.c600.c67f.bin LodeRunner.dsk none apple2e_a.rom
 
 Useful debugger commands:
 
@@ -66,6 +64,7 @@ When the window opens, the emulator displays a user interface panel to the right
 * COLOR - switch between color hi-res graphics and monochrome.
 * PAUSE - pause or resume running the CPU.
 * Floppy drive icons: Drag and drop floppy `.dsk` files onto a drive to "insert" the flopy disk.  Click the drive icon to "eject" the floppy disk.
+* Drag a text file onto the text area to past the file as keyboard input.
 
 If no joystick or gamepad is configured, the Apple 2 screen acts as a joystick.  To configure a joystick, store the GLFW numbers of the two axes and two buttons in "joystick.ini".  A very skilled practitioner may be able to print the joysticks, axes, and buttons by modifying interface.cpp.