參數(shù)資料
型號: LSI53C875A
英文描述: LSI53C875A PCI to Ultra SCSI Controller technical manual v2.0 12/00
中文描述: LSI53C875A PCI到超SCSI控制器技術(shù)手冊2.0 12/00
文件頁數(shù): 50/166頁
文件大?。?/td> 1330K
代理商: LSI53C875A
3-2
SAF-TE Source Code
3.2 Boot Module
The boot module consists of the concatenation of the user configurable
component,
loader.hex
, and the generic boot component,
bootload.hex.
In
Chapter 5, “Configuration Data and the
Configuration Utility,”
the combined file that is referenced below
boot.hex = loader.hex + bootload.hex
is downloaded to the boot EEPROM on new boards either by placing the
chip in a TWS programmer or the code can be downloaded over the ISA
bus to the serial EEPROM (demonstration boards only). Once firmware
is present on the LSI53C040 board, the boot code can be updated in
exactly the same manner as the firmware. See
Section 3.4.2.3,
“Firmware Update,” page 3-33
for more information.
On a power up, the values of the pull-up resistors A8–A11 determine the
TWS bus and the chip address on that bus from which the boot code is
automatically downloaded. Execution of the boot code results in the
contents of the file
loader.hex
being saved into address
HMA_LOADER_OPTIONS (3FE0h) of external data memory. In addition,
the SAF-TE firmware is being downloaded from the serial EEPROM into
external data memory. The serial EEPROM that contains the SAF-TE
firmware is specified by the contents of
loader.hex
.
Note:
The automatic firmware downloads can be disabled by
modifying the jumper settings on the LSI53C040 board.
See the section entitled “Power On Configuration Options,”
in the
LSI53C040 Enclosure Services Processor Technical
Manual
for specific information. The maximum size of the
firmware is limited to 12912 or 0x2FA0 bytes.
The generic boot component,
bootload.hex
, is created by compiling the
C-source file
bootload.c
, the assembly source code
bootload.asm
,
linking the results, and creating the hex output file. The directory 8051
contains a makefile that will execute using the Borland 4.5 make function
or the Watcom 11.0 Microsoft make clone,
nmake
. To recompile the
bootload.hex
component, type on the command line:
c:\8051> nmake clean
c:\8051> nmake all
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