Subject: Suggestions for a C65 Emulator

This is a Call for all Emulator-Writers, to start writing a C65-Emulator.

I am currently exploring the innermost Depths of the C65.

It should be not that hard, as some People might think..

Special-Effects such as FLI, DYCP etc. are NOT possible with a C65 (and are
not necessary because of the Firepower of this Beast) !
Sprite-Multiplexing is possible.

Some Information about VIC3, Stereo-SID and the DMAgic-Blitter are posted in
this Message, other valuable Information can be obtained via WWW at:

	http://www.c65.org/documentation

I have also uploaded some Testprograms, in BASIC V2 and in pure 6502.


1. Stereo SID
SID at $D400: Left Channel
SID at $D420: Right Channel
The SID is (the only) slow Chip, that means you cant access him at more
than 1 MHz.

2. VIC3
A complete Register-Map can be found at c65.org.
The KEY-Register ($D03F) must be written with $A6, then $95 to get into
NEWVIC-Mode. Only after this Manipulation the advanced Features of the
VIC3 can be addressed (80-Chars, FAST, Bitplanes).
Also some special Chips can then be programmed (DMAgic).
Highest Resolution is 1280x400, maximum Colors (without Tricks) are 256,
the Palette can address 4096 Colors.
There is also a Bit for FG/BG, for Genlocking and driving a second Monitor.

3. DMAgic
A complete Register-Map can be found at c65.org.

4. C65 System I/O Memory Map

$D000	VIC3		Video Controller
$D080	FDC		*Disk Controller
$D0A0	REC		*RAM Expansion Ctrl
$D100	RED Palette
$D200	GRN Palette	*Color Palettes (Nybbles)
$D300	BLU Palette
$D400	SID (R)		Audio Controller (Right)
$D420	SID (L)		Audio Controller (Left)
$D600	UART		*RS232, Fast Serial
$D700	DMA		*DMA Controller
$D800	Color Nyb	Color Matrix
$DC00	CIA-1		Keyboard, Joystick, Mouse Control
$DD00	CIA-2		Serial, User Port
$DE00	IO-1		External I/O Select
$DF00	IO-2		External I/O Select

*Note: VIC must be in "new" mode to address these devices.