
VxWorks
Hardware Considerations Guide, 6.0
iv
7 Devices ...................................................................................................................... 15
Interrupts ................................................................................................... 15
System Clock ............................................................................................. 17
Auxiliary Clock ......................................................................................... 17
Timestamp Clock ...................................................................................... 18
Serial Ports ................................................................................................. 18
Ethernet Controllers ................................................................................. 19
USB Controllers ........................................................................................ 20
SCSI Controllers ........................................................................................ 20
DMA Controllers ...................................................................................... 21
Reset Button .............................................................................................. 21
Abort Button ............................................................................................. 21
DIP Switches ............................................................................................. 21
User LEDs .................................................................................................. 21
Parallel Ports ............................................................................................. 22
8 Flash Devices and Flash File System Support .................................................. 22
8.1 Flash Devices ............................................................................................. 22
8.2 Choosing TrueFFS as a Medium ............................................................ 23
8.3 TrueFFS Features ...................................................................................... 23
Block Allocation and Data Clusters ....................................................... 24
Read and Write Operations ..................................................................... 25
Erase Cycles and Garbage Collection .................................................... 26
Optimization Methods ............................................................................ 27
Fault Recovery in TrueFFS ...................................................................... 28
9 Virtual Memory Library ........................................................................................ 30
10 Partial Compliance to Standards ......................................................................... 31
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