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Hi Vijay,
I am having the same issue with i2c on branch 6. How can I get the patch set you used?
Thanks!
Ran Hong
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Today's Topics:
1. Re: Running EPICS on RTEMS/MVME3100 (Joel Sherrill)
2. ADEiger complete script (Graeme Winter)
----------------------------------------------------------------------
Message: 1
Date: Sun, 26 Oct 2025 20:13:25 +0100
From: Joel Sherrill <[email protected]>
To: Vijay Kumar Banerjee <[email protected]>
Cc: "Marks, Nicholas" <[email protected]>, Talk EPICS Tech
<[email protected]>
Subject: Re: Running EPICS on RTEMS/MVME3100
Message-ID:
<CAF9ehCXY0ppTycn8mKWLgZ9hcPS0c4hiAnBpG+QFFq+=K1jG0w@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Sounds great. Ping me to review them.
--joel
On Sun, Oct 26, 2025, 4:07?PM Vijay Kumar Banerjee <[email protected]> wrote:
> Joel,
>
>
> mvme3100 has an issue with libi2c in both 6 and main. I have a patchset
> that Nicholas tested on hardware. I will open a ticket in RTEMS and an MR
> to fix it.
>
> On Sun, Oct 26, 2025, 1:40?AM Joel Sherrill <[email protected]>
> wrote:
>
>> Vijay.. Are these problems on the 6 and main branches for RTEMS.git and
>> libbsd? Are there patches we need to make sure get in 6 and main?
>>
>> On Sun, Oct 26, 2025, 3:35?AM Vijay Kumar Banerjee via Tech-talk <
>> [email protected]> wrote:
>>
>>> Hi Andrew,
>>>
>>>
>>> That setting needs to be part of the application that needs libi2c
>>> initialized. So, it might be possible to add it somewhere in the IOC
>>> instead of rtems_config.
>>>
>>> I am not sure about the status of mvme3100 with libbsd. I remember we
>>> were able to run nfsv4 on libbsd with one of the boards, but I am not sure
>>> if we needed any other configurations. I am not aware of any issues other
>>> than the i2c problem we discussed in this thread.
>>>
>>>
>>>
>>> On Sat, Oct 25, 2025, 5:02?PM Johnson, Andrew N. <[email protected]> wrote:
>>>
>>>> Hi Vijay,
>>>>
>>>> Thanks for responding! Could that setting be part of the BSP, maybe
>>>> conditionally on some other setting that all our boards might enable?
>>>> Many different boards will use the EPICS rtems_confic.c file and they
>>>> won?t all need that setting (some of them might not have an i2c bus at
>>>> all).
>>>>
>>>> What else do you think would be needed for the mvme3100 BSP to be
>>>> buildable with the netbsd network stack instead of the legacy one? That
>>>> ?s a configuration that we?re going to want to use...
>>>>
>>>> - Andrew
>>>>
>>>>
>>>> --
>>>>
>>>> Complexity comes for free, Simplicity you have to work for.
>>>>
>>>>
>>>> On 10/25/25, 6:02?PM, "Tech-talk" <[email protected]>
>>>> wrote:
>>>>
>>>> Awesome!
>>>>
>>>> I'm glad it worked. I remember having to edit the rtems_confic.c to
>>>> make it work.
>>>>
>>>> RTEMS defines a macro RTEMS_BSP. Is it possible to add
>>>> #if RTEMS_BSP == mvme3100
>>>>
>>>> In rtems_config.c, and add the configure option under it, since I2C is
>>>> always required for EPICS on that BSP? Would that be an okay change for
>>>> EPICS base?
>>>>
>>>> On Sat, Oct 25, 2025 at 8:45?AM Marks, Nicholas <[email protected]> wrote:
>>>>
>>>> Vijay,
>>>>
>>>> I realized my "hello.exe" test there was a typo in the #define. It
>>>> works now! For EPICS I tried adding it in a few different places that
>>>> didn't work before I added to modules/libcom/RTEMS/posix/rtems_config.c in
>>>> EPICS base which worked. Maybe there is a better way or a way to add it to
>>>> the IOC itself rather than modifying EPICS base? I need to sort out some
>>>> NFS issues first before the IOC will boot, but my initial problems are
>>>> solved.
>>>>
>>>> Thank you!
>>>> Nick
>>>> ------------------------------
>>>> *From:* Vijay Kumar Banerjee <[email protected]>
>>>> *Sent:* Friday, October 24, 2025 10:24 PM
>>>> *To:* Marks, Nicholas <[email protected]>
>>>> *Cc:* [email protected] <[email protected]>
>>>> *Subject:* Re: Running EPICS on RTEMS/MVME3100
>>>>
>>>> This Message Is From an External Sender
>>>> This message came from outside your organization.
>>>>
>>>> Hi Nicholas,
>>>>
>>>>
>>>> Have you tried adding the macro
>>>>
>>>> #define CONFIGURE_APPLICATION_NEEDS_LIBI2C_DRIVER
>>>>
>>>>
>>>>
>>>>
>>>> On Fri, Oct 24, 2025, 7:30?PM Marks, Nicholas <[email protected]> wrote:
>>>>
>>>> Hi Vijay,
>>>>
>>>> Thanks, I'm trying with the 6 branches for now. Your patches *almost* applied
>>>> without a hitch, however the 0001 patch failed to apply automatically for
>>>> the rtems_i2c_init function. I believe I made the edits manually so this
>>>> should be correct?:
>>>> /* Note that 'arg' is always passed in as NULL */
>>>> rtems_status_code
>>>> rtems_i2c_init (rtems_device_major_number major,
>>>> rtems_device_minor_number minor,
>>>> void *arg)
>>>> {
>>>> /* No busses or drivers can be registered at this point;
>>>> * avoid the macro aborting with an error
>>>> DECL_CHECKED_DRV (drv, busno, minor)
>>>> */
>>>>
>>>> rtems_mutex_init(&libmutex, "LIBI2C");
>>>> rtems_libi2c_is_initialized = true;
>>>> rtems_libi2c_major = major;
>>>> return 0;
>>>>
>>>> }
>>>>
>>>> The other patches appear to have applied without issue. Running some
>>>> examples, I get different errors now. Running the hello.exe example, I get
>>>> a "LIBI2C NOT INITIALIZED" message (see below). I've tried some EPICS
>>>> applications too which have similar results. My guess is the EPICS network
>>>> initialization is failing since the I2C driver isn't initialized and the
>>>> network chip on the MVME communicates via I2C? Anyway, I appreciate the
>>>> help and if you have any additional suggestions or patches you'd like me to
>>>> test I'm all ears. Thanks!
>>>>
>>>> Exit from bspstart
>>>> Tundra Tsi148 PCI-VME bridge detected at 0x80100000, IRQ 0
>>>> Tsi148 Outbound Ports:
>>>> Port VME-Addr Size PCI-Adrs Mode:
>>>> 0: 0x20000000 0x0e000000 0xc0000000 A32, SUP, D32, SCT
>>>> 1: 0x00000000 0x00ff0000 0xcf000000 A24, SUP, D32, SCT
>>>> 2: 0x00000000 0x00010000 0xcfff0000 A16, SUP, D32, SCT
>>>> 7: 0x00000000 0x01000000 0xce000000 CSR, SUP, D32, SCT
>>>> Tsi148 Inbound Ports:
>>>> Port VME-Addr Size PCI-Adrs Mode:
>>>> 0: 0xc0000000 0x20000000 0x00000000 A32, PGM, DAT, SUP, USR, MBLT,
>>>> BLT
>>>> vmeTsi148 IRQ manager: looking for registers on VME...
>>>> Trying to find CSR on VME...
>>>> vmeTsi148 - IRQ manager using VME CSR to flush FIFO
>>>> Registering /dev/console as minor 0 (==/dev/ttyS0)
>>>> LIBI2C NOT INITIALIZED
>>>>
>>>> Hello World
>>>>
>>>> [ RTEMS shutdown ]
>>>> RTEMS version: 6.0.0.36a3845d9cf896bb14ad9a9534b8f6acacba39b4-modified
>>>> RTEMS tools: 13.3.0 20240521 (RTEMS 6, RSB
>>>> 9a03d058f3de052ac50e4ea29f78350ea2ecc7ab, Newlib 1b3dcfd)
>>>> executing thread ID: 0x0a010001
>>>>
>>>> ------------------------------
>>>> *From:* Vijay Kumar Banerjee <[email protected]>
>>>> *Sent:* Friday, October 24, 2025 2:19 PM
>>>> *To:* Marks, Nicholas <[email protected]>
>>>> *Cc:* Heinz Junkes <[email protected]>; [email protected] <
>>>> [email protected]>
>>>> *Subject:* Re: Running EPICS on RTEMS/MVME3100
>>>>
>>>> You don't often get email from [email protected]. Learn why this is
>>>> important
>>>> <https://gcc02.safelinks.protection.outlook.com/?url="">>
>>>> This Message Is From an External Sender
>>>> This message came from outside your organization.
>>>>
>>>> The patch should apply cleanly to the main branch. I have not tried
>>>> applying on branch 6, but I would think that it should apply as the code
>>>> related to patch has not changed during this time.
>>>>
>>>> rtems-net-legacy is required if your application needs networking.
>>>> rtems-net-legacy build on main for powerpc is currently broken due to a
>>>> recent deprecation of "set_vector()" directive. I am working on a fix for
>>>> this, but it might be next week because I generally get to work on this
>>>> during weekends only :)
>>>>
>>>> Meanwhile, you can try the patches with RTEMS 6. If it doesn't apply
>>>> cleanly, I am happy to modify the patch accordingly
>>>>
>>>>
>>>> Best,
>>>>
>>>> Vijay
>>>>
>>>> On Fri, Oct 24, 2025 at 11:17?AM Marks, Nicholas <[email protected]>
>>>> wrote:
>>>>
>>>> Thank you all for the suggestions.
>>>>
>>>> Vijay: I am working on trying your patches today. Is this intended to
>>>> be applied to the version 6 branch, or to the main branch? If it is for the
>>>> main branch, is the rtems-net-legacy package still required for using RTEMS
>>>> on the MVME3100 with EPICS? Building rtems-net-legacy with waf on RTEMS 6.1
>>>> worked fine but not with RTEMS from the main branch...but perhaps this is
>>>> expected.
>>>>
>>>> - Nick
>>>> ------------------------------
>>>> *From:* Vijay Kumar Banerjee <[email protected]>
>>>> *Sent:* Friday, October 24, 2025 1:16 AM
>>>> *To:* Heinz Junkes <[email protected]>
>>>> *Cc:* Marks, Nicholas <[email protected]>; [email protected] <
>>>> [email protected]>
>>>> *Subject:* Re: Running EPICS on RTEMS/MVME3100
>>>>
>>>> You don't often get email from [email protected]. Learn why this is
>>>> important
>>>> <https://gcc02.safelinks.protection.outlook.com/?url="">>
>>>> This Message Is From an External Sender
>>>> This message came from outside your organization.
>>>>
>>>>
>>>>
>>>> Hello Nicholas, and others
>>>>
>>>> I was able to get the mvme3100 running with EPICS IOC on RTEMS 6
>>>> some time ago. I have a patchset to get the RTEMS libi2c properly
>>>> initialized with mvme3100
>>>>
>>>> Somehow, these patches fell through the cracks and didn't make it to
>>>> RTEMS upstream.
>>>>
>>>> I'm attaching the patches here. Could you please test them? I do not
>>>> have access to a hardware to be able to test them. I have only checked that
>>>> they apply cleanly on the current master. Please let me know if there are
>>>> any issues with the patches.
>>>>
>>>> Heinz, with these patches, you would not need to directly call
>>>> _IO_All_drivers_initialized. The EPICS RTEMS application needs to have the
>>>> following configure option added to the application code
>>>>
>>>> #define CONFIGURE_APPLICATION_NEEDS_LIBI2C_DRIVER
>>>>
>>>>
>>>> If these patches fix the mvme3100 I2C issue, I am happy to open a merge request at upstream RTEMS and try to get it merged.
>>>>
>>>>
>>>> Thanks,
>>>>
>>>> Vijay
>>>>
>>>>
>>>>
>>>> On Thu, Oct 23, 2025 at 7:41?PM Heinz Junkes via Tech-talk <
>>>> [email protected]> wrote:
>>>>
>>>> Hello Marks,
>>>> We have been running the MVME3100 with the MVME3100 for quite some time
>>>> now. But still with RTEMS5.
>>>>
>>>> I applied the following kernel patch at the time, which solved a
>>>> problem with the i2c driver.
>>>>
>>>> rtems@rtems-dev:~/MVME3100$ cat kernel.patch
>>>> diff --git a/bsps/powerpc/mvme3100/start/bspstart.c
>>>> b/bsps/powerpc/mvme3100/start/bspstart.c
>>>> index 0ec215e33b..96d6e2f9cd 100644
>>>> --- a/bsps/powerpc/mvme3100/start/bspstart.c
>>>> +++ b/bsps/powerpc/mvme3100/start/bspstart.c
>>>> @@ -52,6 +52,8 @@
>>>> extern unsigned long __rtems_end[];
>>>> extern unsigned ppc_exc_lock_std, ppc_exc_gpr3_std;
>>>>
>>>> +extern bool _IO_All_drivers_initialized;
>>>> +
>>>> /*
>>>> * Copy Additional boot param passed by boot loader
>>>> */
>>>> @@ -419,7 +421,14 @@ void bsp_start( void )
>>>>
>>>> static void mvme3100_i2c_initialize(void)
>>>> {
>>>> + printk("-------- call BSP_i2c_initialize() with
>>>> _IO_All_drivers_initialized = true\n");
>>>> + /*
>>>> + * we need the drivers registered as they appear, due to get
>>>> + * the i2c devices ready
>>>> + */
>>>> + _IO_All_drivers_initialized = true;
>>>> BSP_i2c_initialize();
>>>> + _IO_All_drivers_initialized = false;
>>>> }
>>>>
>>>> RTEMS_SYSINIT_ITEM(
>>>> diff --git a/c/src/lib/libbsp/powerpc/mvme3100/Makefile.am
>>>> b/c/src/lib/libbsp/powerpc/mvme3100/Makefile.am
>>>> index 48a61b9329..842cb92d67 100644
>>>> --- a/c/src/lib/libbsp/powerpc/mvme3100/Makefile.am
>>>> +++ b/c/src/lib/libbsp/powerpc/mvme3100/Makefile.am
>>>> @@ -43,8 +43,8 @@ librtemsbsp_a_SOURCES +=
>>>> ../../../../../../bsps/powerpc/shared/start/bspgetworka
>>>> librtemsbsp_a_SOURCES +=
>>>> ../../../../../../bsps/powerpc/shared/start/zerobss.c
>>>> librtemsbsp_a_SOURCES +=
>>>> ../../../../../../bsps/powerpc/shared/start/sbrk.c
>>>> librtemsbsp_a_SOURCES +=
>>>> ../../../../../../bsps/shared/dev/getentropy/getentropy-cpucounter.c
>>>> -librtemsbsp_a_SOURCES +=
>>>> ../../../../../../bsps/shared/start/bspfatal-default.c
>>>> librtemsbsp_a_SOURCES +=
>>>> ../../../../../../bsps/shared/start/bspreset-empty.c
>>>> +librtemsbsp_a_SOURCES +=
>>>> ../../../../../../bsps/powerpc/mvme3100/start/bspclean.c
>>>> # tod
>>>> librtemsbsp_a_SOURCES +=
>>>> ../../../../../../bsps/shared/dev/rtc/rtc-support.c
>>>> librtemsbsp_a_SOURCES +=
>>>> ../../../../../../bsps/powerpc/mvme3100/rtc/todcfg.c
>>>> rtems@rtems-dev:~/MVME3100$
>>>>
>>>>
>>>> To what extent
>>>> has this now been incorporated into the official release?
>>>> I'll be happy to look into this when I get the chance.
>>>>
>>>>
>>>> HTH,
>>>> Heinz
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Fritz-Haber-Institut | Phone: (+49 30) 8413-4270
>>>> Heinz Junkes | VC:
https://gcc02.safelinks.protection.outlook.com/?url="">
>>>> <https://gcc02.safelinks.protection.outlook.com/?url="">>
>>>> Faradayweg 4-6
>>>> <https://gcc02.safelinks.protection.outlook.com/?url="">>
>>>> | Visitors: Hittorfstrasse 29
>>>> <https://gcc02.safelinks.protection.outlook.com/?url="">>
(Bld
>>>> S (Slough House) )
>>>> D - 14195 Berlin
>>>>
>>>> ------------------------------------------------------------------------------
>>>> ?Sorry I?m a bit late, had a terrible time?
>>>> All sort of things cropping up at the last moment. Uh, how are we for
>>>> time??
>>>> ?Zarquon's address to Milliways
>>>>
>>>> > On 24. Oct 2025, at 00:12, Marks, Nicholas via Tech-talk <
>>>> [email protected]> wrote:
>>>> >
>>>> > Hello,
>>>> >
>>>> > Has anyone succeeded recently in getting an IOC to run on RTEMS on
>>>> the MVME3100? I've been trying but haven't had much luck. I have built
>>>> RTEMS 6.1 using the RTEMS source builder with the MVME3100 BSP and I have
>>>> successfully run several of the provided test applications (
>>>>
https://gcc02.safelinks.protection.outlook.com/?url="">
>>>> <https://gcc02.safelinks.protection.outlook.com/?url="">>).
>>>> I also built EPICS base 7.0.9 for RTEMS-mvme3100, however any EPICS
>>>> applications I create do not work. I believe the failure is during BSP
>>>> initialization before the IOC code even enters the picture since if I
>>>> remove everything from the IOC's main function except a single printf, the
>>>> same crash is present, and no print. I've pasted the VME console output
>>>> below this message.
>>>> > Note that the console hangs for several minutes after this line
>>>> "ds1375_probe (open): No such file or directory" before printing the
>>>> > ""%s" is not a valid command pathname." message, which comes from
>>>> either
>>>> > base/modules/libcom/RTEMS/score/rtems_init.c
>>>> > or
>>>> > base/modules/libcom/RTEMS/posix/rtems_init.c
>>>> >
>>>> > When running the RTEMS test programs that work, the "ds1375_probe..."
>>>> line is not present.
>>>> > Any suggestions would be appreciated. Thank you.
>>>> >
>>>> > MVME3100> go -a4000000
>>>> > -----------------------------------------
>>>> > Welcome to rtems-6.1.0 (PowerPC/Generic (no FPU)/mvme3100)
>>>> > BSP: mvme3100, CVS Release ($Name$)
>>>> > CPU 0x8020 - rev 0x20
>>>> > Additionnal boot options are H
>>>> > Initial system stack at 465df0
>>>> > Going to start PCI buses scanning and initialization
>>>> > Board Type: MVME3100-1263 (S/N EFDD3B6)
>>>> > External (=PCI Bus) Clock Freq : 66666666 Hz
>>>> > Core Complex Bus (CCB) Clock Freq: 333333330 Hz
>>>> > CPU Clock Freq: 166666665 Hz
>>>> > Ethernet 0 EC:9E:CD:19:41:FF
>>>> > Ethernet 1 EC:9E:CD:19:42:00
>>>> > Ethernet 2 EC:9E:CD:19:42:01
>>>> > Number of PCI buses found is : 3
>>>> > BUS:SLOT:FUN VENDOR-DEV_ID: COMMAND STATUS BASE_ADDR0 BASE_ADDR1
>>>> IRQ_PIN ->
>>>> > 0:0x00:0 0x1057-0x0008: 0x0006 0x20b0 0x80000000 0x00000000
>>>> 0 ->
>>>> > 0:0x11:0 0x10e3-0x0148: 0x0146 0x02b0 0x80100004 0x00000000
>>>> 1 ->
>>>> > 0:0x12:0 0x10b5-0x6520: 0x0147 0x02b0 0x00000000 0x00000000
>>>> 0 ->
>>>> > 0:0x13:0 0x10b5-0x6520: 0x0147 0x02b0 0x00000000 0x00000000
>>>> 0 ->
>>>> > 0:0x14:0 0x1095-0x3124: 0x01c7 0x02b0 0x80400004 0x00000000
>>>> 1 -> 2 (=0x0
>>>> > 2:0x00:0 0x1033-0x0035: 0x0146 0x0210 0x80300000 0x00000000
>>>> 1 -> 4 (=0x0
>>>> > 2:0x00:1 0x1033-0x0035: 0x0146 0x0210 0x80301000 0x00000000
>>>> 2 -> 5 (=0x0
>>>> > Memory: 536870912 bytes
>>>> > Cleared PCI errors: pci_stat was 0x20b0
>>>> > OpenPIC Version 1.2 (1 CPUs and 56 IRQ sources) at 0x3775135744
>>>> > OpenPIC Vendor 0 (Unknown), Device 0 (Unknown), Stepping 0
>>>> > OpenPIC timer frequency is 41666666 Hz
>>>> > MSR is 0x00001000, TCR 0x04000000
>>>> > -----------------------------------------
>>>> > Exit from bspstart
>>>> > Tundra Tsi148 PCI-VME bridge detected at 0x80100000, IRQ 0
>>>> > Tsi148 Outbound Ports:
>>>> > Port VME-Addr Size PCI-Adrs Mode:
>>>> > 0: 0x20000000 0x0e000000 0xc0000000 A32, SUP, D32, SCT
>>>> > 1: 0x00000000 0x00ff0000 0xcf000000 A24, SUP, D32, SCT
>>>> > 2: 0x00000000 0x00010000 0xcfff0000 A16, SUP, D32, SCT
>>>> > 7: 0x00000000 0x01000000 0xce000000 CSR, SUP, D32, SCT
>>>> > Tsi148 Inbound Ports:
>>>> > Port VME-Addr Size PCI-Adrs Mode:
>>>> > 0: 0xc0000000 0x20000000 0x00000000 A32, PGM, DAT, SUP, USR, MBLT,
>>>> BLT
>>>> > vmeTsi148 IRQ manager: looking for registers on VME...
>>>> > Trying to find CSR on VME...
>>>> > vmeTsi148 - IRQ manager using VME CSR to flush FIFO
>>>> > libi2c: Library not initialized
>>>> > Registering mpc8540 i2c bus driver :No such file or directory
>>>> > Registering /dev/console as minor 0 (==/dev/ttyS0)
>>>> > ds1375_probe (open): No such file or directory
>>>> > "%s" is not a valid command pathname.
>>>> >
>>>> > *** FATAL ***
>>>> > fatal source: 11 (RTEMS_FATAL_SOURCE_PANIC)
>>>> > fatal code: 3444772 (0x00349024)
>>>> > RTEMS version: 6.1.0.not-released
>>>> > RTEMS tools: 13.3.0 20240521 (RTEMS 6, RSB no-repo, Newlib 1b3dcfd)
>>>> > executing thread ID: 0x0b010001
>>>> >
>>>> >
>>>> >
>>>> > Copyright(C)2008-2013,Emerson Network Power-Embedded Computing,Inc.
>>>> > All Rights Reserved
>>>> > Copyright Motorola Inc. 1999-2007, All Rights Reserved
>>>> > MOTLoad RTOS Version 2.0, PAL Version 1.2 RM04
>>>> > Wed Nov 6 17:17:43 MST 2013
>>>> >
>>>> > MPU-Type =MPC8540
>>>> > MPU-Int Clock Speed =833MHz
>>>> > MPU-CCB Clock Speed =333MHz
>>>> > MPU-DDR Clock Speed =166MHz
>>>> > MPU-PCI Clock Speed =66MHz, PCI, 64-bit
>>>> > MPU-Int Cache(L2) Enabled, 256KB, L2CTL =A8000300
>>>> >
>>>> > Reset/Boot Vector =Flash0
>>>> >
>>>> > Local Memory Found =20000000 (&536870912)
>>>> > User Download Buffer =0159D000:0179CFFF
>>>> >
>>>> > MVME3100>
>>>>
>>>>
>>>>
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------------------------------
Message: 2
Date: Mon, 27 Oct 2025 12:42:11 +0000
From: Graeme Winter <[email protected]>
To: "[email protected]" <[email protected]>
Subject: ADEiger complete script
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"
Good morning / afternoon
I have spent some time this morning trying to configure an Eiger ?from scratch? using _only_ the ADEiger interface and caput
I have thus far failed!
If someone has an example script I would find that very helpful :-)
I am trying right now to set up collection of a series of frames from either an internal or external trigger - I understand the concepts and I am sure I could do it through the rest interface but I am keen to use the standard EPICS one if possible, using simply
caput and scripting
Also: how to fetch the data from the file writer through the ADEiger interface would be handy too? I understand the stream interface but have never used the file writer one
I appreciate that this is probably all obvious to those who are in the know - I am not!
Thanks and all the best Graeme
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