10QT01A-ER0001工业卡件，ABB使用方法教程
当通过软件启用时，中止开关（S2）在用户可编程级别。它通常用于中止程序执行和返回调试器。请参阅MVME197LE的VMEchip2章节，MVME197DP和MVME197SP单板机程序员参考更多信息指南。MVME197LE前面板上的六个LED分别为：FAIL、SCON、RUN、LAN、，VME和SCSI。1.BRDFAIL信号线激活时，黄色故障指示灯（DS1）点亮。
10QT01A-ER0001工业卡件2.VMEchip2为VMEbus时，绿色SCON LED（DS2）点亮系统控制器。3.MC88110总线MC*引脚低时，绿色运行LED（DS3）点亮。4.LAN芯片为本地时，绿色LAN LED（DS4）亮起外围总线主机。
5.当电路板使用VMEbus或时，绿色VME LED（DS5）亮起当VMEbus访问电路板时。
6.当SCSI芯片是本地外围设备时，绿色SCSI LED（DS6）亮起总线主控。数据总线结构数据总线结构可容纳各种8位、16位、，驻留在模块上的32位和64位设备。参考MVME197LE，MVME197DP和MVME197SP单板机程序员参考指南和用户指南，以确定每个设备的端口大小、数据总线连接，以及访问设备时适用的任何限制。MC88110微处理器MVME197LE基于MC88000系列，使用一个MC88110微处理器单元。请参阅MC88110第二代RISC微处理器用户手册了解更多信息。启动ROM32针PLCC/CLCC ROM/EPROM的插座，称为引导ROM或提供DROM（下载ROM）。它被组织为128K x 8设备，但从处理器上看，它看起来像一个16K x 64的内存。这内存从位置$FFF80000开始映射，但在本地重置后还映射到位置0，为加工机PCCchip2的通用控制寄存器（GCR）中的DR0位必须清除才能在0处禁用引导ROM内存映射
When enabled by software, the ABORT switch (S2) generates an interrupt at a
user-programmable level. It is normally used to abort program execution and
return to the debugger. Refer to the VMEchip2 chapter of the MVME197LE,
MVME197DP, and MVME197SP Single Board Computers Programmer’s Reference
Guide for more information.
The six LEDs on the MVME197LE front panel are: FAIL, SCON, RUN, LAN,
VME, and SCSI.
1. The yellow FAIL LED (DS1) is lit when the BRDFAIL signal line is active.
2. The green SCON LED (DS2) is lit when the VMEchip2 is the VMEbus
system controller.
3. The green RUN LED (DS3) is lit when the MC88110 bus MC* pin is low.
4. The green LAN LED (DS4) lights when the LAN chip is the local
peripheral bus master.
5. The green VME LED (DS5) lights when the board is using the VMEbus or
when the board is accessed by the VMEbus.
6. The green SCSI LED (DS6) lights when the SCSI chip is the local peripheral
bus master.Data Bus Structure
The data bus structure is arranged to accommodate the various 8-bit, 16-bit,
32-bit, and 64-bit devices that reside on the module. Refer to the MVME197LE,
MVME197DP, and MVME197SP Single Board Computers Programmer’s Reference
Guide and to the user’s guide for each device to determine its port size, data
bus connection, and any restrictions that apply when accessing the device.
MC88110 MPU
The MVME197LE is based on the MC88000 family and uses one MC88110
microprocessor unit. Refer to the MC88110 Second Generation RISC
Microprocessor User’s Manual for more information.
BOOT ROM
A socket for a 32-pin PLCC/CLCC ROM/EPROM referred to as BOOT ROM
or DROM (Download ROM) is provided. It is organized as a 128K x 8 device,
but as viewed from the processor it looks like a 16K x 64 memory. This
memory is mapped starting at location $FFF80000, but after a local reset it is
also mapped at location 0, providing a reset vector and bootstrap code for the
processor. The DR0 bit in the General Control Register (GCR) of the PCCchip2
must be cleared to disable the BOOT ROM memory map at 0
