目录

段

（续）

标题

页面

5.2.1

数据寄存器................................................ ........................................ 5-4

5.2.2

地址寄存器................................................ .................................. 5-5

5.2.3

程序计数器................................................ .................................... 5-6

5.2.4

控制寄存器................................................ .................................... 5-6

5.2.4.1

状态寄存器................................................ ............................... 5-6

5.2.4.2

备用功能代码注册.............................................. 5-6 ..

5.2.5

向量基址寄存器（ VBR ） ............................................ ....................... 5-7

5.3

存储器结构................................................ ..................................... 5-7

5.4

虚拟内存................................................ ............................................... 5-9

5.5

寻址方式................................................ .......................................... 5-9

5.6

处理状态................................................ .......................................... 5-9

5.7

权限级别................................................ ............................................ 5-10

5.8

说明................................................. .................................................. 5-10

5.8.1

M68000系列兼容............................................... ................ 5-14

5.8.2

特殊控制指令............................................... ................... 5-14

5.8.2.1

低功耗停止（ LPSTOP ） ............................................ ............. 5-14

5.8.2.2

查表和插值（ TBL ） ........................................... 5-14

5.9

异常处理................................................ ................................... 5-14

5.9.1

异常向量................................................ ................................ 5-15

5.9.2

例外的类型............................................... .............................. 5-16

5.9.3

异常处理顺序............................................... ........... 5-17

5.10

开发支持................................................ ................................... 5-17

5.10.1

M68000家庭发展支持.............................................. ... 5-17

5.10.2

背景调试模式............................................... ............... 5-18

5.10.2.1

启用BDM ................................................ .............................. 5-19

5.10.2.2

BDM来源................................................ ............................... 5-19

5.10.2.3

进入BDM ................................................ ............................... 5-20

5.10.2.4

BDM命令................................................ .......................... 5-21

5.10.2.5

背景模式寄存器............................................... ......... 5-21

5.10.2.6

从BDM返回............................................... ..................... 5-22

5.10.2.7

串行接口................................................ ............................. 5-22

5.10.2.8

推荐BDM连接............................................... .. 5-24

5.10.3

确定性的操作码跟踪............................................... ............. 5-24

5.10.4

片内硬件断点............................................. ................ 5-25

5.11

循环模式指令执行.............................................. ................... 5-25

第6QUEUED串口模块

6.1

一般........................................................................................................... 6-1

6.2

QSM寄存器和地址映射............................................. ..................... 6-2

6.2.1

QSM全局寄存器............................................... ............................. 6-2

6.2.1.1

低功耗停止操作............................................. ............... 6-2

摩托罗拉

vi

MC68331

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