DSP 104-plus, Reference Manual

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ii 158004.B00
4 STAND-ALONE OPERATION AND EXPANSION BUSES ...............................40
4.1 STAND-ALONE OPERATION ........................................................................................................ 40
4.2 PC/104 BUS .................................................................................................................................... 40
4.3 PC/104-P
LUS
BUS ........................................................................................................................... 41
4.4 PC/104 AND PC/104-P
LUS
CLOCK AND RESET SIGNALS......................................................... 43
4.4.1 PC/104 Clock and Reset Signals............................................................................................ 43
4.4.2 PC/104-Plus Clock and Reset Signals ................................................................................... 43
4.5 INTERRUPTS ................................................................................................................................. 44
4.5.1 On-Board and PC/104 Bus Interrupts..................................................................................... 44
4.5.2 PC/104-Plus Bus Interrupts .................................................................................................... 45
4.5.3 Plug and Play Control of Interrupts ......................................................................................... 46
4.6 DMA ................................................................................................................................................. 47
5 HARDWARE RESET OPTIONS ........................................................................48
5.1 POWER SUPPLY MONITOR......................................................................................................... 48
5.2 ONBOARD WATCHDOG TIMER................................................................................................... 48
5.3 RESET SWITCH ............................................................................................................................. 49
5.4 RESETTING THE PC/104 AND PC/104-P
LUS
BUSES ................................................................. 49
6 SOFTWARE ...........................................................................................................50
6.1 SYSTEM BIOS ................................................................................................................................ 50
6.2 BIOS SETUP PROGRAM............................................................................................................... 50
6.2.1 Operation of the Setup Program............................................................................................. 51
6.2.2 Reducing Boot Time ............................................................................................................... 52
6.3 VGA BIOS AND OTHER BIOS EXTENSIONS .............................................................................. 52
6.3.1 Principles of Operation............................................................................................................ 52
6.3.2 The VGA BIOS Extension....................................................................................................... 52
6.3.3 The Flash File System BIOS Extension ................................................................................. 53
6.4 MS-DOS AND OTHER OPERATING SYSTEMS .......................................................................... 53
6.5 FLASH MEMORY PROGRAMMING............................................................................................. 54
6.5.1 Programming the 2M byte 29F016 Flash Chips..................................................................... 54
6.5.2 Programming the 4M byte 29F032 Flash Chips..................................................................... 56
6.5.3 Steps to Perform after Programming BIOS............................................................................ 57
6.6 FLASH FILE SYSTEM .................................................................................................................... 57
6.6.1 Overview.................................................................................................................................. 58
6.6.2 Operation of the Flash File System ........................................................................................ 59
6.6.3 Write Operations and Garbage Collection.............................................................................. 60
6.6.4 Flash File System Statistics .................................................................................................... 61
6.7 SAVING CMOS RAM DATA IN THE SERIAL EEPROM............................................................... 62
6.8 SERIAL EEPROM PROGRAMMING ............................................................................................. 63
6.9 WATCHDOG TIMER PROGRAMMING ........................................................................................ 64
7 POWER MANAGEMENT ...................................................................................65