6502微处理器硬件资料.txt

6502微处理器硬件资料.txt,里面有一些关于6502微处理器硬件的资料。不知大家有没有用。

  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Relative      |   BPL Oper            |    10   |    2    |    2*    |
  +----------------+-----------------------+---------+---------+----------+
  * Add 1 if branch occurs to same page.
  * Add 2 if branch occurs to different page.


  BRK                          BRK Force Break                          BRK

  Operation:  Forced Interrupt PC + 2 toS P toS         N Z C I D V
                                                        _ _ _ 1 _ _
                                 (Ref: 9.11)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Implied       |   BRK                 |    00   |    1    |    7     |
  +----------------+-----------------------+---------+---------+----------+
  1. A BRK command cannot be masked by setting I.


  BVC                   BVC Branch on overflow clear                    BVC

  Operation:  Branch on V = 0                           N Z C I D V
                                                        _ _ _ _ _ _
                               (Ref: 4.1.1.8)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Relative      |   BVC Oper            |    50   |    2    |    2*    |
  +----------------+-----------------------+---------+---------+----------+
  * Add 1 if branch occurs to same page.
  * Add 2 if branch occurs to different page.


  BVS                    BVS Branch on overflow set                     BVS

  Operation:  Branch on V = 1                           N Z C I D V
                                                        _ _ _ _ _ _
                               (Ref: 4.1.1.7)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Relative      |   BVS Oper            |    70   |    2    |    2*    |
  +----------------+-----------------------+---------+---------+----------+
  * Add 1 if branch occurs to same page.
  * Add 2 if branch occurs to different page.


  CLC                       CLC Clear carry flag                        CLC

  Operation:  0 -> C                                    N Z C I D V
                                                        _ _ 0 _ _ _
                                (Ref: 3.0.2)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Implied       |   CLC                 |    18   |    1    |    2     |
  +----------------+-----------------------+---------+---------+----------+


  CLD                      CLD Clear decimal mode                       CLD

  Operation:  0 -> D                                    N A C I D V
                                                        _ _ _ _ 0 _
                                (Ref: 3.3.2)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Implied       |   CLD                 |    D8   |    1    |    2     |
  +----------------+-----------------------+---------+---------+----------+


  CLI                  CLI Clear interrupt disable bit                  CLI

  Operation: 0 -> I                                     N Z C I D V
                                                        _ _ _ 0 _ _
                                (Ref: 3.2.2)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Implied       |   CLI                 |    58   |    1    |    2     |
  +----------------+-----------------------+---------+---------+----------+


  CLV                      CLV Clear overflow flag                      CLV

  Operation: 0 -> V                                     N Z C I D V
                                                        _ _ _ _ _ 0
                                (Ref: 3.6.1)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Implied       |   CLV                 |    B8   |    1    |    2     |
  +----------------+-----------------------+---------+---------+----------+


  CMP                CMP Compare memory and accumulator                 CMP

  Operation:  A - M                                     N Z C I D V
                                                        / / / _ _ _
                                (Ref: 4.2.1)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Immediate     |   CMP #Oper           |    C9   |    2    |    2     |
  |  Zero Page     |   CMP Oper            |    C5   |    2    |    3     |
  |  Zero Page,X   |   CMP Oper,X          |    D5   |    2    |    4     |
  |  Absolute      |   CMP Oper            |    CD   |    3    |    4     |
  |  Absolute,X    |   CMP Oper,X          |    DD   |    3    |    4*    |
  |  Absolute,Y    |   CMP Oper,Y          |    D9   |    3    |    4*    |
  |  (Indirect,X)  |   CMP (Oper,X)        |    C1   |    2    |    6     |
  |  (Indirect),Y  |   CMP (Oper),Y        |    D1   |    2    |    5*    |
  +----------------+-----------------------+---------+---------+----------+
  * Add 1 if page boundary is crossed.

  CPX                  CPX Compare Memory and Index X                   CPX
                                                        N Z C I D V
  Operation:  X - M                                     / / / _ _ _
                                 (Ref: 7.8)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Immediate     |   CPX *Oper           |    E0   |    2    |    2     |
  |  Zero Page     |   CPX Oper            |    E4   |    2    |    3     |
  |  Absolute      |   CPX Oper            |    EC   |    3    |    4     |
  +----------------+-----------------------+---------+---------+----------+

  CPY                  CPY Compare memory and index Y                   CPY
                                                        N Z C I D V
  Operation:  Y - M                                     / / / _ _ _
                                 (Ref: 7.9)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Immediate     |   CPY *Oper           |    C0   |    2    |    2     |
  |  Zero Page     |   CPY Oper            |    C4   |    2    |    3     |
  |  Absolute      |   CPY Oper            |    CC   |    3    |    4     |
  +----------------+-----------------------+---------+---------+----------+


  DEC                   DEC Decrement memory by one                     DEC

  Operation:  M - 1 -> M                                N Z C I D V
                                                        / / _ _ _ _
                                 (Ref: 10.7)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Zero Page     |   DEC Oper            |    C6   |    2    |    5     |
  |  Zero Page,X   |   DEC Oper,X          |    D6   |    2    |    6     |
  |  Absolute      |   DEC Oper            |    CE   |    3    |    6     |
  |  Absolute,X    |   DEC Oper,X          |    DE   |    3    |    7     |
  +----------------+-----------------------+---------+---------+----------+


  DEX                   DEX Decrement index X by one                    DEX

  Operation:  X - 1 -> X                                N Z C I D V
                                                        / / _ _ _ _
                                 (Ref: 7.6)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Implied       |   DEX                 |    CA   |    1    |    2     |
  +----------------+-----------------------+---------+---------+----------+


  DEY                   DEY Decrement index Y by one                    DEY

  Operation:  X - 1 -> Y                                N Z C I D V
                                                        / / _ _ _ _
                                 (Ref: 7.7)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Implied       |   DEY                 |    88   |    1    |    2     |
  +----------------+-----------------------+---------+---------+----------+


  EOR            EOR "Exclusive-Or" memory with accumulator             EOR

  Operation:  A EOR M -> A                              N Z C I D V
                                                        / / _ _ _ _
                               (Ref: 2.2.3.2)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Immediate     |   EOR #Oper           |    49   |    2    |    2     |
  |  Zero Page     |   EOR Oper            |    45   |    2    |    3     |
  |  Zero Page,X   |   EOR Oper,X          |    55   |    2    |    4     |
  |  Absolute      |   EOR Oper            |    40   |    3    |    4     |
  |  Absolute,X    |   EOR Oper,X          |    50   |    3    |    4*    |
  |  Absolute,Y    |   EOR Oper,Y          |    59   |    3    |    4*    |
  |  (Indirect,X)  |   EOR (Oper,X)        |    41   |    2    |    6     |
  |  (Indirect),Y  |   EOR (Oper),Y        |    51   |    2    |    5*    |
  +----------------+-----------------------+---------+---------+----------+
  * Add 1 if page boundary is crossed.

  INC                    INC Increment memory by one                    INC
                                                        N Z C I D V
  Operation:  M + 1 -> M                                / / _ _ _ _
                                 (Ref: 10.6)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Zero Page     |   INC Oper            |    E6   |    2    |    5     |
  |  Zero Page,X   |   INC Oper,X          |    F6   |    2    |    6     |
  |  Absolute      |   INC Oper            |    EE   |    3    |    6     |
  |  Absolute,X    |   INC Oper,X          |    FE   |    3    |    7     |
  +----------------+-----------------------+---------+---------+----------+

  INX                    INX Increment Index X by one                   INX
                                                        N Z C I D V
  Operation:  X + 1 -> X                                / / _ _ _ _
                                 (Ref: 7.4)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Implied       |   INX                 |    E8   |    1    |    2     |
  +----------------+-----------------------+---------+---------+----------+


  INY                    INY Increment Index Y by one                   INY

  Operation:  X + 1 -> X                                N Z C I D V
                                                        / / _ _ _ _
                                 (Ref: 7.5)
  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Implied       |   INY                 |    C8   |    1    |    2     |
  +----------------+-----------------------+---------+---------+----------+