Subject: Re: PowerMac 7300 won't boot 2.0 iso
To: Chaz McGarvey <chaz@brokenzipper.com>
From: Tim Kelly <hockey@dialectronics.com>
List: port-macppc
Date: 12/13/2004 01:37:06
On Sun, 12 Dec 2004 23:06:48 -0700
Chaz McGarvey <chaz@brokenzipper.com> wrote:

> 0 > 600000 dis
> 00600000: 7C0004AC
> 00600004: 4C00012C
> 00600008: 3C2000E1
> 0060000C: 3821CB40
> 00600010: 38212000
> 00600014: 7D0000A6
> 00600018: 38000000
> 0060001C: 7C000124

Yep, PowerPC opcodes. (using ofwboot.xcf 1.10 for comparison)

  e0000c:       7c 00 04 ac     dcs
  e00010:       4c 00 01 2c     ics
  e00014:       3c 20 00 e1     liu     r1,225
  e00018:       38 21 d3 04     cal     r1,-11516(r1)
  e0001c:       38 21 20 00     cal     r1,8192(r1)
  e00020:       7d 00 00 a6     mfmsr   r8
  e00024:       38 00 00 00     lil     r0,0
  e00028:       7c 00 01 24     mtmsr   r0

> 0 > e00000 dis
> 00E00000: 55AA4000
> 00E00004: 00000000
> 00E00008: 00000000
> 00E0000C: 00000000
> 00E00010: 00000000

Nope, no PowerPC opcodes.

You've definately got bootxx 1.12. Let's make sure you have ofwboot 1.7

At the catch do 

60c900 100 dump

This will dump 256 bytes of memory. This should be near the end of
ofwboot and have some hard coded addresses.

> I'm glad this stuff makes sense to you. ;)

Still putting the pieces together :-)

tim