82C465MV/MVA/MVB

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访问控制位的含义为SYSCFG 38H [ 4 ： 1 ] ， 37H [7 ： 4 ] ， 31H [ 3 ： 0 ] ........................ ................ 55

影子RAM控制位.............................................................................................................55

写保护Registers..................................................................................................................56

全局高速缓存控制启用........................................................................................................57

不可缓存的内存块的大小和有效的起始地址位...................................... .... 57

不可缓存块Registers....................................................................................................57

C000 ， E000 ， F000H块缓存启用.......................................... ............................................ 58

写保护的DRAM高速缓存控制............................................ .............................................. 61

引脚选项....................................................................................................................................62

L1写回位编程....................................................................................................63

突发写入控制........................................................................................................................63

L2高速缓存支持信号对应............................................. ...................................... 65

标记位和CPU地址线之间的对应关系.......................................... ............. 66

最大可缓存系统DRAM每个高速缓存配置.......................................... ..66

SRAM速度的要求.........................................................................................................67

L2高速缓存的安排选择位............................................. ............................................... 67

L2高速缓存支持选项（带选） ......................................... ........................................... 68

L2高速缓存寄存器.......................................................................................................................69

Cache计时Control....................................................................................................................70

186针脚功能Select.................................................................................................................72

循环使能位..........................................................................................................................72

ISA总线刷新控制...............................................................................................................73

ATCLKIN编程寄存器位.............................................. ............................................. 73

外围器件编程寄存器位............................................. ................................. 74

PIO2和SABUFEN ＃编程位............................................ .................................................. 75

编程硬件复位Bit..................................................................................................77

IPC配置位...................................................................................................................78

INTC1初始化命令字.............................................. ............................................. 78

INTC2初始化命令字.............................................. ............................................. 78

INTC1和INTC2操作命令字............................................ ............................. 80

中断控制器映射寄存器指数值............................................ .......................... 81

DMA地址和计数Registers...............................................................................................81

DMA控制和状态寄存器............................................. .................................................. ..81

DMAC1控制和状态位....................................................................................................82

DMAC2控制和状态位....................................................................................................83

DMA命令...........................................................................................................................83

DMA进展位........................................................................................................................84

LDEV ＃抽样DMA本地总线.......................................... .............................................. 86

F型DMA Control......................................................................................................................86

定时器控制和状态寄存器............................................. ................................................. 87

定时器控制位..........................................................................................................................87

OPTI

第十八页

912-3000-016

修订： 3.0