Add bare bones do-nothing audit.asm

.gitignore

@@ -1,3 +1,7 @@
 *.o
 roms/*.bin
 floatbus/cfg
+audit/cfg
+
+# Temporarily...
+roms/*

audit/audit.asm

@@ -0,0 +1,38 @@
+;;; Apple II audit routines
+;;; Copyright © 2016 Zellyn Hunter <zellyn@gmail.com>
+
+	!convtab <apple ii/convtab.bin>
+	!to "audit.o", plain
+	* = $6000
+
+	HOME = $FC58
+	COUT = $FDED
+
+main:
+	jsr HOME
+	jsr print
+	!text "Apple II audit",$8D,0
+	jsr print
+	!text "Detecting machine version...",$8D,0
+end:	jmp *
+
+;;; print prints a null-terminated string from the address after the
+;;; JSR that called it, returning to the address following the null.
+print:
+	tsx
+	lda $101,X
+	sta getch+1
+	lda $102,X
+	sta getch+2
+-	inc getch+1
+	bne getch
+	inc getch+2
+getch	lda $FEED 		; $FEED gets modified
+	beq +
+	jsr COUT
+	jmp -
++	lda getch+1
+	sta $101,X
+	lda getch+2
+	sta $102,x
+	rts

audit/build

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -euo pipefail
+export ACME="$HOME/gh/acme/ACME_Lib"
+
+acme audit.asm
+
+# Build audit.dsk with diskii (bit.ly/a2diskii), on a Super-Mon disk
+# =====================================================================
+
+cp ../dsk/supermon20.dsk audit.dsk
+# FHELLO: load file DF02 at 0x6000.
+echo -n -e '\x20\x40\x03\x6D\x01\xDC\x2C\x02\xDF\x2C\x00\x60\xF8\x4C\x00\x60' | diskii put -f audit.dsk DF01:FHELLO -
+diskii put -f audit.dsk DF02:FWORLD audit.o
+
+
+# On my computer, run mame like this:
+# mame -rompath ~/mame/roms/ apple2ee -flop1 ./audit.dsk