Commodore

VIC20 (1981)

• Processor: 6502, 1MHz
• Memory: 5kB RAM exp. to 29kB
• Sound: 3 channels + white noise
• Text display: 23x22
• Graphics display: 176x158, 16 colors
• Keyboard: Typewriter-style
• Interfaces:
  Cassette interface
  RF interface
• Released: 1981

• vic-emu [Amiga]
  Emulator by Pieter van Leuven [etmpile@crosby.ericsson.se]. The following program takes 8.8 seconds to execute on this emulator when run on 68000 CPU at 7.14MHz:
  10 FOR I=1 TO 2000
20 NEXT I
  The archive includes VIC20 ROMs in separate files.

• vic-emulator [C64]
  BASIC emulator in machine language by Fausto Ibarra.

Pet

• The PET Emulator [C64]
  This emulator is included into C64 Software Bonus Pack. It emulates 2001 series, 4032 series & BASIC 4.0 and allows most existing PET programs written in BASIC to be run on C64.

C64 (1982)

• Processor: 6510
• Memory: 64kB RAM
• Sound: 3 channels
• Text display: 40x25
• Graphics display: 320x200, 16 colors
• Keyboard: Typewriter-style, 61 keys
• Interfaces:
  Cassette interface
  User port (parallel printers and RS232)
  Serial interface (diskdrives and printers)
  2 9pin joystick ports
  Composite video output (5pin DIN)
  RF interface
• Announced: 1982
• Released: December 1982

• A64 [Amiga]
  This is a software-only emulator by Cliff Dugan, Christopher P. Zura & Douglas Decicco which is freely available. You will need a special piece of hardware allowing to connect C64 peripherals to Amiga though. This piece, as well as printed documentation, is available for additional fee from
  Cliff Dugan, QuesTronix
  QuesTronix
  P.O.Box 340265
  Hartford, CT 06134-0265
  USA

• C64Emulator [Amiga]
  This program by Eddy Carroll was written to co-incide with the 1st of April. Basically, it's a semi-64 emulator in that it emulates the colour, cursor, and screen editing perfectly, but it's not so hot on the actual commands.

• c64 [Atari ST]
  Very rough emulator by Uwe Seimet. There is no banking, no shadow I/O. The documentation is in German only. Assembly source included.

• Mac64 [Macintosh]
  Author Earle F. Philhower III [st916w9r@dunx1.ocs.drexel.edu] Software only emulator, which comes in colour and black-and-white versions. Supports 1541 emulation, hard drive & printer, tape images. C Source code included.

• X64 [Unix/X]
  This emulator is written by Jouko Valta [jopi@stekt.oulu.fi] and emulates C64 on various workstations running Unix and XWindows.

Amiga (1986)

• Processor: 68000/7.14MHz...68040/25MHz
• Memory: 512kB...128MB (usually 4-8MB)
• Sound: 4 channels, 8bit waveform
• Text display: None
• Graphics display: up to 770x480, bitplane based, virtual screens up to 32768x32768
• Interfaces:
  SCSI or IDE
  RGB video
  Composite video (in some models)
  VGA connector (in some models)
  RCA sound output
  2 joystick inputs (1st used for mouse)

• UAE - The Unusable Amiga Emulator [Unix/X]
  Partial software emulation of the hardware of an Amiga 500 written by Bernd Schmidt [crux@pool.informatik.rwth-aachen.de]. In spite of its awkward name, the UAE us quite functional and even runs AmigaOS 3.1, according to the rumors. UAE needs an image of the Amiga Kickstart ROM, not included for copyright reasons.