I already posted this problem in the long How things could become more difficult thread, sorry for posting it here again, but there wasn't an answer for a few days now so I figured I'll post it as a separate thread for better visibility (not to rush anyone into anything ). Or is everyone just busy at the Amersfoort meet?
Anyway, the additional memory checks out just fine, but I get the following messages after the hard-drive detection :

Quote:
RAM disk driver initialized: 16 RAM disks of 4096K size
empeg single channel IDE
Probing primary interface...
hda: IC25N040ATMR04-0, ATA DISK drive
hdb: IC25N080ATMR04-0, ATA DISK drive
ide0 at 0x000-0x007,0x038 on irq 6
hda: IC25N040ATMR04-0, 38154MB w/1740kB Cache, CHS=4864/255/63
hdb: IC25N080ATMR04-0, 76319MB w/7884kB Cache, CHS=9729/255/63
empeg-flash driver initialized
smc chip id/revision 0x3349
smc9194.c:v0.12 03/06/96 by Erik Stahlman (erik@vt.edu)

SMC9194: SMC91C94(r:9) at 0x4008000 IRQ:7 INTF:TP MEM:6144b MAC 00:02:d7:22:06:5a
Partition check:
hda: hda1 < hda5 hda6 > hda2 hda3 hda4
hdb: hdb1 < hdb5 hdb6 > hdb2 hdb3 hdb4
RAMDISK: ext2 filesystem found at block 0
RAMDISK: Loading 320 blocks [1 disk] into ram disk... done.
VFS: Mounted root (ext2 filesystem).
Timezone: /usr/share/zoneinfo
IRQ LOCK: IRQ7 is locking the system, disabled
Unable to handle kernel paging request at virtual address 000024c0
memmap = C0004000, pgd = c0004000
*pgd = c012f801, *pmd = c012f801, *pte = 00000000, *ppte = 00000000
Internal error: Oops: 0
CPU: 0
pc : [<c00330e0>] lr : [<c0033a34>]
sp : c01f7f84 ip : c01f7f94 fp : c01f7f90
r10: c0103fc8 r9 : c0108704 r8 : 00000002
r7 : 00000004 r6 : 00000001 r5 : 00000000 r4 : c1f772a0
r3 : 00000004 r2 : 00000000 r1 : 000024c0 r0 : c1f772a0
Flags: nZCv IRQs on FIQs on Mode SVC_32 Segment kernel
Control: C000517D Table: C000517D DAC: 0000001D
Process kupdate (pid: 3, stackpage=c01f7000)
Stack:
c01f7f60: c0033a34 c00330e0 60000013
c01f7f80: ffffffff c01f7fb0 c01f7f94 c0033a34 c003300c 00007220 00000042 00000001
c01f7fa0: 00000004 c01f7fe0 c01f7fb4 c003512c c00339cc c1f772a0 00000001 c01f6000
c01f7fc0: c0104024 c0108794 c0100988 4401a11b c0008580 c01f7ffc c01f7fe4 c0035790
c01f7fe0: c00350a0 c0035720 c012b84c c0100760 c0003fb4 c01f8000 c000b6ec c003572c
Backtrace:
Function entered at [<c0033000>] from [<c0033a34>]
Function entered at [<c00339c0>] from [<c003512c>]
r7 = 00000004 r6 = 00000001 r5 = 00000042 r4 = 00007220
Function entered at [<c0035094>] from [<c0035790>]
r10 = C0008580 r9 = 4401A11B r8 = C0100988 r7 = C0108794
r6 = C0104024 r5 = C01F6000 r4 = 00000001
Function entered at [<c0035720>] from [<c000b6ec>]
r6 = C0100760 r5 = C012B84C r4 = C0035720
Function entered at [<c001d36c>] from [<c0009b40>]
r10 = C0008580 r9 = 4401A11B r8 = C0122580 r7 = C0108794
r6 = C01218CC r5 = C0100768 r4 = 00000008
Function entered at [<c00099b4>] from [<c0009ba4>]
r8 = C0100988 r7 = C0100764 r6 = C0100760 r5 = C012B84C
r4 = C0009B94
Function entered at [<c0009b94>] from [<c000b6ec>]
r7 = C0100764 r6 = C0100760 r5 = C012B84C r4 = C0009B94
Function entered at [<c00096c4>] from [<c00098b0>]
Function entered at [<c00096dc>] from [<c0008080>]
r7 = C0121DA0 r6 = C0121CF4 r5 = C012C280 r4 = C012C280
Code: e5821034 e5803000 (e5812000) e59f10a8 e3a02000

I only get this with Hijack (394 and 395), not with the standard kernel, so the error must stem from the installed additional memory. I checked all pins for continuity and bridges and it all looked good. If the memory checks out fine, why the error message that late?

Interesting. Just rebooting gives this error log:

Quote:
RAM disk driver initialized: 16 RAM disks of 4096K size
empeg single channel IDE
Probing primary interface...
hda: IC25N040ATMR04-0, ATA DISK drive
hdb: IC25N080ATMR04-0, ATA DISK drive
ide0 at 0x000-0x007,0x038 on irq 6
hda: IC25N040ATMR04-0, 38154MB w/1740kB Cache, CHS=4864/255/63
hdb: IC25N080ATMR04-0, 76319MB w/7884kB Cache, CHS=9729/255/63
empeg-flash driver initialized
smc chip id/revision 0x3349
smc9194.c:v0.12 03/06/96 by Erik Stahlman (erik@vt.edu)

SMC9194: SMC91C94(r:9) at 0x4008000 IRQ:7 INTF:TP MEM:6144b MAC 00:02:d7:22:06:5a
Partition check:
hda: hda1 < hda5 hda6 > hda2 hda3 hda4
hdb: hdb1 < hdb5 hdb6 > hdb2 hdb3 hdb4
RAMDISK: ext2 filesystem found at block 0
RAMDISK: Loading 320 blocks [1 disk] into ram disk... done.
VFS: Mounted root (ext2 filesystem).
Timezone: /usr/share/zoneinfo
Unable to handle kernel paging request at virtual address 000024c0
memmap = C0004000, pgd = c0004000
*pgd = c012f801, *pmd = c012f801, *pte = 00000000, *ppte = 00000000
Internal error: Oops: 0
CPU: 0
pc : [<c00330e0>] lr : [<c0033a34>]
sp : c01f7f84 ip : c01f7f94 fp : c01f7f90
r10: c0103fc8 r9 : c0108704 r8 : 00000002
r7 : 00000004 r6 : 00000001 r5 : 00000000 r4 : c1f772a0
r3 : 00000004 r2 : 00000000 r1 : 000024c0 r0 : c1f772a0
Flags: nZCv IRQs on FIQs on Mode SVC_32 Segment kernel
Control: C000517D Table: C000517D DAC: 0000001D
Process kupdate (pid: 3, stackpage=c01f7000)
Stack:
c01f7f60: c0033a34 c00330e0 60000013
c01f7f80: ffffffff c01f7fb0 c01f7f94 c0033a34 c003300c 00007220 00000042 00000001
c01f7fa0: 00000004 c01f7fe0 c01f7fb4 c003512c c00339cc c1f772a0 00000001 c01f6000
c01f7fc0: c0104024 c0108794 c0100988 4401a11b c0008580 c01f7ffc c01f7fe4 c0035790
c01f7fe0: c00350a0 c0035720 c012b84c c0100760 c0003fb4 c01f8000 c000b6ec c003572c
Backtrace:
Function entered at [<c0033000>] from [<c0033a34>]
Function entered at [<c00339c0>] from [<c003512c>]
r7 = 00000004 r6 = 00000001 r5 = 00000042 r4 = 00007220
Function entered at [<c0035094>] from [<c0035790>]
r10 = C0008580 r9 = 4401A11B r8 = C0100988 r7 = C0108794
r6 = C0104024 r5 = C01F6000 r4 = 00000001
Function entered at [<c0035720>] from [<c000b6ec>]
r6 = C0100760 r5 = C012B84C r4 = C0035720
Function entered at [<c001d36c>] from [<c0009b40>]
r10 = C0008580 r9 = 4401A11B r8 = C0122580 r7 = C0108794
r6 = C01218CC r5 = C0100768 r4 = 00000008
Function entered at [<c00099b4>] from [<c0009ba4>]
r8 = C0100988 r7 = C0100764 r6 = C0100760 r5 = C012B84C
r4 = C0009B94
Function entered at [<c0009b94>] from [<c000b6ec>]
r7 = C0100764 r6 = C0100760 r5 = C012B84C r4 = C0009B94
Function entered at [<c00096c4>] from [<c00098b0>]
Function entered at [<c00096dc>] from [<c0008080>]
r7 = C0121DA0 r6 = C0121CF4 r5 = C012C280 r4 = C012C280
Code: e5821034 e5803000 (e5812000) e59f10a8 e3a02000

So this time it's a "Unable to handle kernel paging request at virtual address 000024c0" not the IRQ error. How could it have different errors on different boots? Maybe a wiggely solder joint?

Here's the bootlog with the standard kernel:

Quote:
RAM disk driver initialized: 16 RAM disks of 4096K size
empeg single channel IDE
Probing primary interface...
hdb: IC25N080ATMR04-0, ATA DISK drive
hda: IC25N040ATMR04-0, ATA DISK drive
hdb: IC25N080ATMR04-0, ATA DISK drive
ide0 at 0x000-0x007,0x038 on irq 6
hda: IC25N040ATMR04-0, 38154MB w/1740kB Cache, CHS=4864/255/63
hdb: IC25N080ATMR04-0, 76319MB w/7884kB Cache, CHS=9729/255/63
empeg-flash driver initialized
smc chip id/revision 0x3349
smc9194.c:v0.12 03/06/96 by Erik Stahlman (erik@vt.edu)

SMC9194: SMC91C94(r:9) at 0x4008000 IRQ:7 INTF:TP MEM:6144b MAC 00:02:d7:22:06:5a
Partition check:
hda: hda1 < hda5 hda6 > hda2 hda3 hda4
hdb: hdb1 < hdb5 hdb6 > hdb2 hdb3 hdb4
RAMDISK: ext2 filesystem found at block 0
RAMDISK: Loading 320 blocks [1 disk] into ram disk... done.
VFS: Mounted root (ext2 filesystem).
empeg-pump v0.03 (19980601)
Press Ctrl-A to enter pump...•Ô•j½Õ¹Ñ•‘�ɽ½Ñ�¡•áÑÉ�™¥±•ÍåÍÑ•µ¥�É•…‘½¹±å¹)5ÿchange_root: old root has d_count=1
Trying to unmount old root ... okay
Freeing unused kernel memory: 4k initempeg init 0.8
I see this is a developer image!
Mounting proc
Mounting first music partition
Tried to mount /dev/hda4 as reiserfs but got error 19
Mounting second music partition
Remounting first music partition read-only
Remounting second music partition read-only
Press 'q' now to go into development mode. You Have Zero Seconds To Comply...
Starting player
player.cpp : 385:empeg-car 2.00 2003/04/01.
Prolux 4 empeg car - 2.1434 Mar 26 2003
Vcb: 0x4086d000
Restored terminal settings
Remounting first music partition read-only
Remounting second music partition read-only
Abnormal player termination
Player received SIGINT, user interruption
Switching to shell-player loop
Starting bash.
empeg:/empeg/bin#

Ok, I'm the master of replying to myself, sorry for that
Even though all my pins measured between 0.3 and 0.5 Ohms, I just retouched every single pin (just for the Halibut). Now everything works perfectly! Thanks so much for you patience with me!