Fixes to actually run code

This is the version to run the first (trivial) infinite loop
correctly.  I hacked up the loader slightly to replace one of the
(nonexistent) pages with a static byte array.

z80 code executed:

$4000:
	JP	$4000

4000  c3 40 00
4003

This version also draws the opcode executed on the screen, to aid in
debugging the emulator:

        move.b  d0,$4c00+32*(128/8)

Also, it turns out that I was mixing up the emulated SP (a4) and emulated
PC (a6).  That has been fixed.

Further, it seems that movea defaults to a word operation in a68k.
This led to pointer corruption, which has been fixed.

1 files changed, 2 insertions, 2 deletions

diff --git a/main.asm b/main.asm
index ddeb8e4..61fe95d 100644
--- a/main.asm
+++ b/main.asm
@@ -66,8 +66,8 @@ emu_setup:
 	lea	flag_storage,a3
 	move.w	#$4000,d1
 	bsr	deref
-	move	a0,a6
-	move	a0,a4
+	move.l	a0,a6
+	move.l	a0,a4
 
 	rts