Instruction manual

13.3 System ROM Format
The system ROM is a 256 KB x 8 FLASH ROM that resides on the CXT logic of
the DEC 3000 AXP system board. The I/O ROM is a 256 KB x 8 FLASH ROM
connected to the COREIO chip on the system I/O board. Figure 15 shows the
ROM header format.
Figure 15 System ROM Header Format
MR−0138−93RAGS
ROM Objects
Dynamic Data
Checksum (System ROM)
0x010
0x014
0x018
0x01C
0x000
0x004
0x008
0x00C
0x020
0x040
0x060
0x080
0x090
0x0A0
0x55
0x00
0xAA
0xFF
0x5555
0x0000
0xAAAA
0xFFFF
0x00
0xAA
0xFF
Module
Name
Flags
Firmware
Type
Vendor
Name
Firmware
Revision
ROM Width
ROM Stride
ROM Size
Slot Size
0x55
DEC 3000 AXP Firmware ROMs 13–3