Instruction manual

Table 48 (Cont.) Register Values After Power-Up
Name Value Description
COREIO ASIC Registers
Ethernet DMA pointer Unknown The NI boot driver or NI console driver may
have this pointing to its LANCE buffers whose
address can not be determined.
SCC0 XMIT DMA Ptr 0x00000000 Initialized to 0.
SCC0 RCV DMA Ptr 0x00000000 Initialized to 0.
SCC1 XMIT DMA Ptr 0x00000000 Initialized to 0.
SCC1 RCV DMA Ptr 0x00000000 Initialized to 0.
ISDN XMIT DMA Ptr 0x00000000 Initialized to 0.
ISDN XMIT DMA Bfr
Ptr
0x00000000 Initialized to 0.
ISDN RCV DMA Ptr 0x00000000 Initialized to 0.
ISDN RCV DMA Bfr Ptr 0x00000000 Initialized to 0.
System data buffer 0-3 0x00000000 Initialized to 0.
System support 0x0005D00
Graphics
console
0x0001C00
NI console
All DMAs are disabled except for NI, which
may be enabled if this is the console driver.
Ethernet is selected using NVR bit, serial
transmit drivers are enabled.
System interrupt 0x0000XXXX Interrupt bits <31:16> are cleared to 0; the
device interrupt bits should also be zero.
System interrupt mask 0x00000000 All interrupts are masked from the CPU.
LANCE I/O slot 0x00000003 LANCE registers can be addressed.
SCC0 DMA slot 0x00000016 SCC0 registers can be addressed.
SCC1 DMA slot 0x00000019 SCC1 registers can be addressed.
SCSI ASIC
Controller interrupt 0x00000000 Interrupts are off.
Interrupt mask enable 0x00000000 Interrupts are masked.
DMA address register 0 0x00000000
DMA address register 1 0x00000000
DMA interrupt control
register 0
0xXXXXXX00 Disable interrupts.
DMA interrupt control
register 1
0xXXXXXX00 Disable interrupts.
(continued on next page)
14–8 Powerup Initialization and Firmware Entry