參數(shù)資料
型號： LSI53C141
英文描述： LSI53C141 SCSI Bus Expander technical manual v2.1 11/00
中文描述： LSI53C141 SCSI總線擴展技術(shù)手冊2.1 11/00
文件頁數(shù)： 60/166頁
文件大?。?/td> 1330K
代理商： LSI53C141
3-12
SAF-TE Source Code
The states that access the data memory are:
Read Memory Bit (OpCode 0x02)
Write Memory Bit (OpCode 0x03)
Read Memory Byte (OpCode 0x04)
Write Memory Byte (OpCode 0x05)
Read Memory Indexed (Opcode 0x06).
Termination of the state machine is accomplished with the last state:
Done (OpCode 0x08).
Using the answers to the questions posed by
config.exe
, the function
fill_program
clears and repopulates the data memory (256 bytes)
and program memory (a maximum of 400 integers) members of the
config
data structure. It will, for each fan, power supply, door lock, etc.,
call the subroutine
fill_instruction
at least once.
Note:
In those cases where the MPIO register is to be modified,
fill_program
will call the function
fill_output_pin_instruction
that in turn calls
fill_instruction
.
The function
fill_instruction
takes its arguments, program
memory counter (beginning from 0), operation code (specifies the next
state), Shift (bit shift, 0–3) and Address, and creates a 16-bit
“instruction”. The instruction
(operation code<< 12)|(Shift << 8)|(Address)
is then written to program memory at the offset specified by the counter.
The SAF-TE source code restricts the maximum number of instructions
to 400 (Program Tag PROGRAM_MEMORY_SIZE).
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