Download EPPCBug Firmware Package User's Manual - ps

Transcript
System Call Routines
.BRDINFO
Code: 0F02
Description
.BRDINFO returns a pointer to the board information packet. The
packet is built at initialization time and contains information about
the PowerPC board and peripherals it supports.
Entry Conditions
R3 points to the input parameter block:
Offset
0x0
7
Description
Pointer to board info buffer
R4 points to the output parameter block:
Offset
0x0
Description
System call return status
Exit Conditions
System call return status has been updated with either zero (no
error) or a nonzero error code listing.
The user input argument packet has been Þlled with a pointer to the
board information structure.
The board information structure format is shown below:
Offset
7-48
Description
0x0
Word containing ASCII string ÒBDIDÓ
0x4
Size of this structure
0x8
Revision of this structure
0xC
EPPCBug Rev. Month Day Year
0x10
Start address of local DRAM
0x14
Ending address of local DRAM
0x18
Processor internal frequency (in Hz)
PowerPC EPPCBug Firmware Package UserÕs Manual