10QT01A-ER0001工業(yè)卡件，ABB使用方法教程
當通過軟件啟用時，中止開關（S2）在用戶可編程級別。它通常用于中止程序執(zhí)行和返回調試器。請參閱MVME197LE的VMEchip2章節(jié)，MVME197DP和MVME197SP單板機程序員參考更多信息指南。MVME197LE前面板上的六個LED分別為：FAIL、SCON、RUN、LAN、，VME和SCSI。1.BRDFAIL信號線激活時，黃色故障指示燈（DS1）點亮。
10QT01A-ER0001工業(yè)卡件2.VMEchip2為VMEbus時，綠色SCON LED（DS2）點亮系統(tǒng)控制器。3.MC88110總線MC*引腳低時，綠色運行LED（DS3）點亮。4.LAN芯片為本地時，綠色LAN LED（DS4）亮起外圍總線主機。
5.當電路板使用VMEbus或時，綠色VME LED（DS5）亮起當VMEbus訪問電路板時。
6.當SCSI芯片是本地外圍設備時，綠色SCSI LED（DS6）亮起總線主控。數據總線結構數據總線結構可容納各種8位、16位、，駐留在模塊上的32位和64位設備。參考MVME197LE，MVME197DP和MVME197SP單板機程序員參考指南和用戶指南，以確定每個設備的端口大小、數據總線連接，以及訪問設備時適用的任何限制。MC88110微處理器MVME197LE基于MC88000系列，使用一個MC88110微處理器單元。請參閱MC88110第二代RISC微處理器用戶手冊了解更多信息。啟動ROM32針PLCC/CLCC ROM/EPROM的插座，稱為引導ROM或提供DROM（下載ROM）。它被組織為128K x 8設備，但從處理器上看，它看起來像一個16K x 64的內存。這內存從位置$FFF80000開始映射，但在本地重置后還映射到位置0，為加工機PCCchip2的通用控制寄存器（GCR）中的DR0位必須清除才能在0處禁用引導ROM內存映射
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
