VIC-20 Emulator 
		(a very brief Read.Me)

Why:	Because I didn't had a C64 but a VIC-20 before I bought
	an Amiga and to remember 'the good old days' I has to write 
	my own emulator. So here it is......

HowToUse:
	In this package are two binairies:
	vic-00:	For the 68000 amigas
	vic-20: For the >=68020 amigas (not tested)

	For the first impression just start it.



	To start the vic with rom-cartidges it is possible
	to give the start address of the cartridge and the
	file name of the cartidge. 

	EG.
	vic-00 $a000 8k/pacman.atari

	vic-00 $6000 16k/loderunner.60 $a000 16k/loderunner.a0 

	
	To load files:

	Start emulator and type:

	LOAD "TANK",8

	
	

Keys:	Because the key-matrix is implemented very straight
	forward not all keys have a logical place on the Amiga
	keyboard. The most important differences are shown below:

	VIC    |    Amiga		VIC     |   Amiga
	-------+---------		--------+--------
	F2     | SHIFT-F1		"       | @
	F4     | SHIFT-F2		+       | -
	F6     | SHIFT-F4		-       | =
	F8     | SHIFT-F5		=       | F10
	<-     | ` (~)			&       | ^
	'      | &			(       | *
	)      | (			HOME    | <- (BackSpace)
	@      | [			*       | ]
	:      | ;                      [       | :
	;      | '			]       | "
	STOP   | CTRL			C=      | ALT
	BACK-SP| DEL

	And of course you have to press SHIFT -> to move the
	cursor to the left and SHIFT V(arrow-down) to move the
	cursor upwards.


Bugs:	The SAVE function is not reliable. When you have plans
	to type in your own programs use A64.

Speed:	On a 68000 system the next program takes 25 seconds
	10 FORI=1TO2000
	20 NEXTI

	Please send information about other systems!!!

ToDo:	Improve Screen updates 
	Use the all frequencies to emulate VIC-20 sound
	Improve disk-support
	Implement BRK-instruction (Who knows how it works?)
	Implement NMI (restore key)
	Add more ram
	Make a icon for it. (volunteers?)
	Improve docs

	
Thanks:	Yacco de Leeuw 		who supplied the ROM-images
	Frank van Leeuwen	for giving hints for optimizing
				the 6502-code
	Andreas Heitmann	for transferring cartridges to files
				and his VIC-FTP site
	Paul Kolenbrander	and his A4000 who showed me the first
				8MHz VIC ;-).

Bug reports and remarks:

	E-Mail etmpile@crosby.ericsson.se

	or
	
	Pieter van Leuven
	Markt 19A
	5688 AJ  Oirschot
	Holland