Motorola MVME2400 Series Installation And User Manual page 11

VMEbus Interface.............................................................................................3-24
Asynchronous Debug Port ................................................................................3-24
PCI-ISA Bridge (PIB) Controller .....................................................................3-25
Real-Time Clock/NVRAM/Timer Function .....................................................3-26
PCI Host Bridge (PHB) ....................................................................................3-26
Interrupt Controller (MPIC)..............................................................................3-27
Programmable Timers.......................................................................................3-27
Interval Timers ..........................................................................................3-27
16/32-Bit Timers........................................................................................3-28
CHAPTER 4 Programming
Introduction................................................................................................................4-1
Memory Maps ............................................................................................................4-1
Processor Bus Memory Map...............................................................................4-2
Default Processor Memory Map..................................................................4-2
PCI Local Bus Memory Map..............................................................................4-3
VMEbus Memory Map .......................................................................................4-3
Programming Considerations.....................................................................................4-4
PCI Arbitration ...................................................................................................4-4
Interrupt Handling...............................................................................................4-6
DMA Channels ...................................................................................................4-8
Sources of Reset..................................................................................................4-8
Endian Issues ....................................................................................................4-10
Processor/Memory Domain .......................................................................4-10
Role of the Hawk ASIC ............................................................................4-10
PCI Domain ...............................................................................................4-10
PCI and Ethernet .......................................................................................4-10
Role of the Universe ASIC .......................................................................4-11
VMEbus Domain .......................................................................................4-11
CHAPTER 5 PPCBug
PPCBug Overview .....................................................................................................5-1
PPCBug Basics ..........................................................................................................5-1
Memory Requirements .......................................................................................5-3
PPCBug Implementation ....................................................................................5-3
MPU, Hardware, and Firmware Initialization ...........................................................5-3
Using PPCBug ...........................................................................................................5-5
Debugger Commands .........................................................................................5-6
Diagnostic Tests ................................................................................................5-10
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