VMIPMC-5565燃機卡件,GE參數說明
當該位為1（高）時，它指示調試器使用用于其工作頁的本地靜態RAM（即變量、堆棧、向量表等）。當拆下跳線時，該位將為高位。位#1（GPI1）3-4當該位為1（高）時，它指示調試器使用ROM中的默認設置/操作參數與NVRAM中的用戶設置/操作參數。這是一樣的同時按下重置和中止開關時間如果用戶設置為損壞或不符合健全性檢查。參考ENVROM默認值的命令（附錄A）。此位將拆下跳線時為高。
VMIPMC-5565燃機卡件可選SRAM備用電源選擇頭J6標頭J6是一個可選標頭，用于選擇SRAM備份MVME187上的電源（如果有可選電池）。（SRAM的備用電池可選，但僅作為工廠建造，僅根據特殊要求。）
如果您的系統配備了可選電池備用，不要從J6上拆下跳線。這將禁用SRAM。如果您的電路板包含可選的收割臺J6，但可選電池已拆下，跳線必須安裝在針腳1和3以及針腳2和4之間工廠配置如表3-5所示。串行端口4時鐘配置選擇頭J7和J8串行端口4可以配置為使用TRXC4和RTXC4信號線。MVME187上的頭J7和J8配置串行端口4以驅動或分別接收TRXC4和RTXC4（見表3-6）。
? 出廠配置將端口4設置為接收兩個信號。
? 替代配置將端口4設置為驅動兩個信號時鐘線的其余配置完成使用上的串行端口4時鐘配置選擇標頭MVME712M過渡模塊。參考MVME712M過渡模塊和P2適配器板用戶手冊該標頭的配置。
When this bit is a one (high), it instructs the debugger to use
local Static RAM for its work page (i.e., variables, stack, vector
tables, etc.). This bit will be high when jumper is removed.
Bit #1 (GPI1) 3-4 When this bit is a one (high), it instructs the debugger to use
the default setup/operation parameters in ROM versus the
user setup/operation parameters in NVRAM. This is the same
as depressing the RESET and ABORT switches at the same
time. This feature can be used in the event the user setup is
corrupted or does not meet a sanity check. Refer to the ENV
command (Appendix A) for the ROM defaults. This bit will be
high when jumper is removed.Optional SRAM Backup Power Source Select Header J6
Header J6 is an optional header used to select the SRAM backup
power source on the MVME187, if the optional battery is present.
(The battery backup for SRAM is optionally available, but only as a
factory build and only by special request.)
!
Caution
If your system is equipped with the optional battery
backup, do not remove the jumpers from J6. This will
disable the SRAM. If your board contains optional
header J6, but the optional battery is removed, jumpers
must be installed between pins 1 and 3 and pins 2 and 4
for the factory configuration as shown in Table 3-5.
Serial Port 4 Clock Configuration Select Headers J7 and J8
Serial port 4 can be configured to use clock signals provided by the
TRXC4 and RTXC4 signal lines.
Headers J7 and J8 on the MVME187 configure serial port 4 to drive
or receive TRXC4 and RTXC4, respectively (see Table 3-6).
? Factory configuration sets port 4 to receive both signals.
? The alternative configuration sets port 4 to drive both signals
The remaining configuration of the clock lines is accomplished
using the Serial Port 4 Clock Configuration Select header on the
MVME712M transition module. Refer to the MVME712M
Transition Module and P2 Adapter Board User's Manual for
configuration of that header.
