ABB 086318-501模塊使用方法教程
目前由PPCBug支持的磁盤(pán)/磁帶控制器模塊。（默認(rèn)值=$00）網(wǎng)絡(luò)自動(dòng)引導(dǎo)設(shè)備LUN=00 請(qǐng)參閱PPCBug固件包用戶手冊(cè)，以獲取目前由PPCBug支持的磁盤(pán)/磁帶控制器模塊。（默認(rèn)值=$00）網(wǎng)絡(luò)自動(dòng)引導(dǎo)中止延遲=5？NETboot序列在啟動(dòng)之前延遲的時(shí)間（秒）靴子延遲的目的是允許您選擇停止使用鍵啟動(dòng)。時(shí)間值為0-255秒。（默認(rèn)值=5秒）網(wǎng)絡(luò)自動(dòng)引導(dǎo)配置參數(shù)偏移（NVRAM）=00001000網(wǎng)絡(luò)接口配置參數(shù)的地址保存/保留在NVRAM中；
ABB 086318-501模塊使用方法教程這些參數(shù)是必要的用于執(zhí)行無(wú)人值守網(wǎng)絡(luò)引導(dǎo)的參數(shù)。典型的偏移可能為1000美元，但該值是特定于應(yīng)用程序的。如果使用NIOT調(diào)試器命令，則需要保存在從$00000000到$00000 FFF的偏移范圍內(nèi)。這個(gè)NIOT參數(shù)的大小不超過(guò)128字節(jié)。此環(huán)境的設(shè)置指針確定其位置。如果您已將相同的空間用于如果您擁有程序信息或命令，它們將被覆蓋并丟失。您可以在此中重新定位網(wǎng)絡(luò)接口配置參數(shù)通過(guò)使用ENV命令更改網(wǎng)絡(luò)自動(dòng)引導(dǎo)配置參數(shù)從默認(rèn)值$00001000偏移到該值您需要清除NVRAM中的數(shù)據(jù)。此參數(shù)的默認(rèn)設(shè)置因車速而異安裝在板上的DRAM內(nèi)存部件。默認(rèn)設(shè)置為在可用的DRAM存儲(chǔ)器組上發(fā)現(xiàn)的最慢速度這是編程到MPC105“ROMFAL”字段中的值（內(nèi)存控制配置寄存器8：位23-27）以指示訪問(wèn)ROM時(shí)使用的時(shí)鐘周期數(shù)。允許的最低時(shí)鐘周期數(shù)ROMFAL設(shè)置為00美元；允許的最高價(jià)格為1美元。要輸入的值取決于處理器速度。默認(rèn)值根據(jù)系統(tǒng)的總線時(shí)鐘速度。注：ROM首次訪問(wèn)長(zhǎng)度不適用于MVME2600/MVME2700/MVME3600/MVME4600。PPCBUG忽略配置的值。ROM下一個(gè)訪問(wèn)長(zhǎng)度（0-15）=0？編程到MPC105“ROMNAL”字段中的值（存儲(chǔ)器控制配置寄存器8：位28-31），表示半字節(jié)（或突發(fā)）模式ROM訪問(wèn)的訪問(wèn)時(shí)間。最低的允許的ROMNAL設(shè)置為$0；允許的最高值為$F輸入取決于處理器速度。默認(rèn)值隨時(shí)間而變化系統(tǒng)的總線時(shí)鐘速度。注：ROM下一個(gè)訪問(wèn)長(zhǎng)度不適用于
MVME2600/MVME2700/MVME3600/MVME4600。PPCBUG忽略配置的值
Refer to the PPCBug Firmware Package User’s Manual for a listing of
disk/tape controller modules currently supported by PPCBug.
(Default = $00)
Network Auto Boot Device LUN = 00?
Refer to the PPCBug Firmware Package User’s Manual for a listing of
disk/tape controller modules currently supported by PPCBug.
(Default = $00)
Network Auto Boot Abort Delay = 5?
The time in seconds that the NETboot sequence delays before starting the
boot. The purpose for the delay is to allow you the option of stopping the
boot by use of the <Break> key. The time value is from 0-255 seconds.
(Default = 5 seconds)
Network Auto Boot Configuration Parameters Offset (NVRAM) =
00001000?
The address where the network interface configuration parameters are to
be saved/retained in NVRAM; these parameters are the necessary
parameters to perform an unattended network boot. A typical offset might
be $1000, but this value is application-specific. If you use the NIOT debugger command, these parameters need to be
saved somewhere in the offset range $00000000 through $00000FFF. The
NIOT parameters do not exceed 128 bytes in size. The setting of this ENV
pointer determines their location. If you have used the same space for your
own program information or commands, they will be overwritten and lost.
You can relocate the network interface configuration parameters in this
space by using the ENV command to change the Network Auto Boot
Configuration Parameters offset from its default of $00001000 to the value
you need to be clear of your data within NVRAM.The default setting for this parameter varies depending on the speed of the
DRAM memory parts installed on the board. The default is set to the
slowest speed found on the available banks of DRAM memoryThis is the value programmed into the MPC105 “ROMFAL” field
(Memory Control Configuration Register 8: bits 23-27) to indicate the
number of clock cycles used in accessing the ROM. The lowest allowable
ROMFAL setting is $00; the highest allowable is $1F. The value to enter
depends on processor speed. The default value varies according to the
system’s bus clock speed.
Note ROM First Access Length is not applicable to the
MVME2600/MVME2700/MVME3600/MVME4600. PPCBUG
ignores the configured value.
ROM Next Access Length (0 - 15) = 0?
The value programmed into the MPC105 “ROMNAL” field (Memory
Control Configuration Register 8: bits 28-31) to represent wait states in
access time for nibble (or burst) mode ROM accesses. The lowest
allowable ROMNAL setting is $0; the highest allowable is $F. The value
to enter depends on processor speed. The default value varies according to
the system’s bus clock speed.
Note ROM Next Access Length is not applicable to the
MVME2600/MVME2700/MVME3600/MVME4600. PPCBUG
ignores the configured value
