參數(shù)資料
型號(hào)： LSI53C770
英文描述： LSI53C770 Ultra SCSI I/O Processor technical manual v2.1 3/01
中文描述： LSI53C770超的SCSI I / O處理器技術(shù)手冊2.1 3 / 01
文件頁數(shù)： 70/166頁
文件大?。?/td> 1330K
代理商： LSI53C770
3-22
SAF-TE Source Code
3.4.2 Main Program
The main program consists of subroutines and functions pertaining to the
LSI53C040 Enclosure Services Processor.
3.4.2.1 Background Module Overview
The top-level function in the SAF-TE source code is the module main.
This function is responsible for:
transferring all TWS data
executing the contents of program memory
gathering enclosure status information periodically
updating data memory;
processing reboot and firmware update commands
uploading new firmware from external data memory into the serial
EEPROM attached to one of the TWS buses.
As stated earlier in this Programming Guide, upon power-up, the
contents of the serial EEPROM are automatically downloaded to the
external data memory (although this can be disabled by changing the
jumper settings on the LSI53C040 board). Once the firmware has been
loaded into external memory and a reset has occurred, the firmware
begins executing.
A high-level flow diagram of the main module is shown in
Figure 3.1
. For
convenience, a brief description of the subroutine actions is shown in
italics
next to each function name. The flow diagram illustrates that the
function
background_process
can be viewed as having 4 functional
components:
reset_scsi_hw
execute_program_once
background_code_load, and
gather_TWS_input.
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