I guess because it occupies the same space IOS expects to load (because it basically is an IOS), so there is a conflict. I’ll have to read up on relocation, or embedding another copy of itself in itself to relocate in middle memory so high memory and low memory are free…

But otherwise, I need to see how to talk to the clock so I can run those integer benchmark tools (hanoi, queens etc) to get an idea of how fast the emulation is.

I’ll tftp boot ciscoload.bin next time. All good fun though!

Wow that’s pretty cool!!!! Thanks for booting it up, it’s awesome to know it actually works on IRON!

It ought to be able to load multisegment ELF executables, and I hope single segment executables… Meaning you should be able to load your IOS back to get a functional device…

Thanks again for testing this!

Yup!
I copied it to flash and added
boot system flash ciscoload.bin

*Aug 5 23:33:44.743: %SYS-5-RELOAD: Reload requested by console. Reload Reason: Reload Command.
System Bootstrap, Version 12.2(7r)XM4, RELEASE SOFTWARE (fc1)
TAC Support: http://www.cisco.com/tac
Copyright (c) 2003 by cisco Systems, Inc.
C1700 platform with 98304 Kbytes of main memory

program load complete, entry point: 0x8000d9c8, size: 0x24f03
CILO
CiscoLoader (CILO) – Linux bootloader for Cisco Routers
Available RAM: 98304 kB
Available commands:
c1700-k9o3sy7-mz.124-15.T10.bin
vlan.dat
old-startup
ciscoload.bin
queen
hanoi
horse
fib
planetfall
halt

Enter filename to boot:
>
Enter filename to boot:
malloc 64512 offset is 0 offset is now 64522
malloc 38912 offset is 64522 offset is now 103444
PLANETFALL
Infocom interactive fiction – a science fiction story
Copyright (c) 1983 by Infocom, Inc. All rights reserved.
PLANETFALL is a trademark of Infocom, Inc.
Release 37 / Serial number 851003

Another routine day of drudgery aboard the Stellar Patrol Ship Feinstein. This
morning’s assignment for a certain lowly Ensign Seventh Class: scrubbing the
filthy metal deck at the port end of Level Nine. With your Patrol-issue
self-contained multi-purpose all-weather scrub brush you shine the floor with a
diligence born of the knowledge that at any moment dreaded Ensign First Class
Blather, the bane of your shipboard existence, could appear.

Deck Nine
This is a featureless corridor similar to every other corridor on the ship. It
curves away to starboard, and a gangway leads up. To port is the entrance to
one of the ship’s primary escape pods. The pod bulkhead is closed.

Deck Nine Score: 0/4451
>

I think you ought to be able to netboot it.. which I know is a PITA on it’s own right… At least on Dynamips this compiles and acts like IOS. This old version of binutils lets me kick out an exe that only has a single program segment. which is what the cisco ROM can only deal with.

But I totally get that ‘works on an emulator that emulates just enough hardware’ is not the same as real hardware.

ELFTool – a simple tool for viewing ELF file structures.
(c) 2008 Philippe Vachon

ELF File Header:
================================================
Ident bytes:
Class: 32-bit
Data type: Big endian
Version: 1

ELF Object Type: Executable File (2)
Machine ID: 0x33
Cisco 1700 Series Router (PowerPC, MPC860) or Stanford MIPS-X
Version: 0x00000001
Entry point: 0x8000d5d0
Program header offset: 0x00000034
Section header offset: 0x00025930
Flags: 0x00000000
ELF Header Size: 52 bytes
Program Header Entry Size: 32 bytes
Program Header Count: 1
Section header Entry Size: 40 bytes
Section Header Count: 9
String table entry index: 8

Section Header Entries:
================================================
Section 0
Name: null [0]
Type: SHT_NULL (0x00000000)
Flags: 0x00000000
—
Address: 0x00000000
Offset: 0 bytes
Size: 0 bytes
Link: 0x00000000
Additional Info: 0x00000000
Address Alignment: 0x00000000
Per-Entry Size: 0 bytes

Section 1
Name: .text [11]
Type: SHT_PROGBITS (0x00000001)
Flags: 0x00000007
Awx
Address: 0x80008000
Offset: 84 bytes
Size: 40892 bytes
Link: 0x00000000
Additional Info: 0x00000000
Address Alignment: 0x00000004
Per-Entry Size: 0 bytes

Section 2
Name: .rodata [17]
Type: SHT_PROGBITS (0x00000001)
Flags: 0x00000002
A–
Address: 0x80011fbc
Offset: 40976 bytes
Size: 2772 bytes
Link: 0x00000000
Additional Info: 0x00000000
Address Alignment: 0x00000004
Per-Entry Size: 0 bytes

Section 3
Name: .data [25]
Type: SHT_PROGBITS (0x00000001)
Flags: 0x00000003
Aw-
Address: 0x80012a90
Offset: 43748 bytes
Size: 109543 bytes
Link: 0x00000000
Additional Info: 0x00000000
Address Alignment: 0x00000004
Per-Entry Size: 0 bytes

Section 4
Name: .sdata [31]
Type: SHT_PROGBITS (0x00000001)
Flags: 0x00000003
Aw-
Address: 0x8002d678
Offset: 153292 bytes
Size: 12 bytes
Link: 0x00000000
Additional Info: 0x00000000
Address Alignment: 0x00000004
Per-Entry Size: 0 bytes

Section 5
Name: .sbss [38]
Type: SHT_NOBITS (0x00000008)
Flags: 0x00000003
Aw-
Address: 0x8002d684
Offset: 153304 bytes
Size: 208 bytes
Link: 0x00000000
Additional Info: 0x00000000
Address Alignment: 0x00000004
Per-Entry Size: 0 bytes

Section 6
Name: .bss [44]
Type: SHT_NOBITS (0x00000008)
Flags: 0x00000003
Aw-
Address: 0x8002d754
Offset: 153304 bytes
Size: 1049120 bytes
Link: 0x00000000
Additional Info: 0x00000000
Address Alignment: 0x00000004
Per-Entry Size: 0 bytes

Section 7
Name: .comment [49]
Type: SHT_PROGBITS (0x00000001)
Flags: 0x00000000
—
Address: 0x00000000
Offset: 153304 bytes
Size: 540 bytes
Link: 0x00000000
Additional Info: 0x00000000
Address Alignment: 0x00000001
Per-Entry Size: 0 bytes

Section 8
Name: .shstrtab [1]
Type: SHT_STRTAB (0x00000003)
Flags: 0x00000000
—
Address: 0x00000000
Offset: 153844 bytes
Size: 58 bytes
Link: 0x00000000
Additional Info: 0x00000000
Address Alignment: 0x00000001
Per-Entry Size: 0 bytes

Program Header Entries
================================================
Segment 0
Type: PT_LOAD (0x00000001)
Offset: 0x00000054
Virtual Address: 0x80008000
Physical Address: 0x80008000
Size in File: 153220 bytes
Size in Memory: 1202548 bytes
Flags: 0x00000007
Alignment: 0x00000004