ABB DSQC604 3HAC12928-1动力箱电源
注意：在Windows NT 4.0中使用VMIC的IOWorks Access的Configure实用程序配置RAM时，请不要请求超过25%的物理RAM。超过25%的限制可能会导致已知的Windows NT错误，在Windows NT启动过程中会导致不可预测的行为，并需要使用紧急修复盘来恢复计算机。Windows NT 4.0 service pack级别3中存在此错误。建议紧急维修盘保持最新状态，并易于访问。VMIVME-7750包括32 KB的非易失性SRAM，CPU可以随时访问该SRAM，用于存储在断电状态下不能丢失的系统数据。注：内存容量可能会随着部件的可用而扩展。内存和端口映射内存映射-基于Tundra Universe II的PCI到VMEbus桥基于TundraUniverse II接口VMIVME-7750的内存映射如表2-1所示。所有系统都共享相同的内存映射，尽管VMIVME-7750的SDRAM不足256 MB，无法填满为板上扩展内存保留的全部空间。
NOTE: When using the Configure utility of VMIC’s IOWorks Access with Windows
NT 4.0 to configure RAM, do not request more than 25 percent of the physical RAM.
Exceeding the 25 percent limit may result in a known Windows NT bug that causes
unpredictable behavior during the Windows NT boot sequence, and requires the use
of an emergency repair disk to restore the computer. The bug is present in
Windows NT 4.0 service pack level 3. It is recommended that an emergency repair
disk be kept up-to-date and easily accessible.
The VMIVME-7750 includes 32 Kbyte of non-volatile SRAM which can be accessed by
the CPU at any time, and is used to store system data that must not be lost during
power-off conditions.
NOTE: Memory capacity may be extended as parts become available.Memory and Port Maps
Memory Map - Tundra Universe II-Based PCI-to-VMEbus Bridge
The memory map for the Tundra Universe II-based interface VMIVME-7750 is shown
in Table 2-1. All systems share this same memory map, although a VMIVME-7750
with less than the full 256 Mbyte of SDRAM does not fill the entire space reserved for
On-Board Extended Memory.
