This is a short description of the 65XX family of microchips that is
     available to the hobbits of today.

     (Hobbits is a contraction of two words Hobby and Bits. Within the
     spectrum of man it distinctively identifies an epoch.)


     6502 Microprocessor                56 Commands plus an internal clock
     Rockwell NCR                       Runs at 1 to 4 MHZ
                                        Accumulator,X Register,Y Register
                                        Program Counter

     6510 Microprocessor                56 Commands Documented,an internal
     Commodore                          clock,Many Undocumented Opcodes
                                        6 bit I/O port,Accumulator,X Reg,
                                        Y Reg, I/O Register, 1 to 2 MHZ

     8502 Microprocessor                56 Commands Documented, an
     Commodore                          internal clock, Many undocumented
                                        opcodes, 7 Bit I/O, X Reg, Y Reg,
                                        Accumulator, I/O Register, 1 to 2
                                        MHZ (8500 is similar?)

     65C02 Microprocessor               68 Commands, Same Registers as
     Rockwell                           above, 1 to 4 MHZ speed, CMOS( Low
                                        power/Fast speed),additional
                                        addressing

     65816 Microprocessor               A 16/8bit processor, 16 Bit X,Y
     Western Design Center              and Accumulator Registers,82+
                                        Commands, additional addressing,
                                        2 MHZ?

     6545 CRT (Cathode Ray Tube)        A green monitor chip that
     Synertek                           address memory during the off 0
                                        cycle.

     6520 Periperal Interface Adapter   2 (8 bit ports)with 4 Control pins
     Commodore                          and 2 IRQ lines

     6522 Versatile Interface Adapter   Same as 6520 but with a timer and
     Commodore                          serial to paralel shift register
                                        pulse counting capability

     6526 Complex Interface Adapter     2 (8 bit ports),4 Control Pins,
     Commodore                          Time of Day Clock,Serial Port,
                                        pulse counting capability.

     6560 vic                           Video display chips 40 Column
     6560 vic ii                        Composite Monitor that have light
     6567 vic ii                        pen,sprite,white noise,and other
     6568 vic ii                        cabilities (40 Pins) Bitmap
     Commodore
     8564 Vic chip                      No scroll capabilities,Mobs,Light
     Commodore                          Pens,Sprites,40 Column Composite
                                        Monitor, Multicolor,Bitmap

     8563 VDC Chip                      A RGB Monitor chip designed for
     Commodore                          adaptability to about any monitor.
                                        80 Column
     8564 VDC Chip                      Same as above but with better
     Commodore                          display.

     6532 Multifunction I/O Chip        2 8 Bit ports with Timers and Data
     Rockwell                           Direction Registers 128 Bytes of
                                        Ram

     6551 Asyncronus Communications     A standard serial I/O device with
     Rockwell                           CPU interface/controll serial
                                        input, serial output,modem
                                        controll

     6581 Sound Interface Device        3 voice electronic noise generator
     8580 Sound Interface Device        0-4khz,48db,2 analog/digital
                                        converters,29 registers (unknown
                                        upgrade capabilities to the 8580)


     Althouth it varies from manufacturer to manufacturer. The last letter
     in the name of a chip normally refers to the speed at which it
     operates. For example 6526A is a 2 MHZ version of the 6526 chip.