AmigaKit.com has 512Mb MicroA1 memory now in stock that is compatible with AmigaOS 4.0.

The memory comes supplied with a specific Micro AmigaOne fitting guide.

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@amigakit

Is that surely compatible, as @kgrach describe elsewhere?? Curious ...


edited: Typos ...

Last edited by mlehto on 08-Apr-2005 at 08:06 PM.

@amigakit

Thanks for the support, amigakit seems very professional.

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ikir

@mlehto

It's been tested for the last 3 months on our micro-A1 without any problems.

What problems has Kgrach highlighted previously?

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@amigakit

Is the image shown actually the RAM module you're selling?
If so, I expect it's a Mac RAM module (nothing wrong with that, as long as it works!)

What are the specs? I'm assuming CAS3?

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@wegster

No the image is not exactly the same, but it could possibly work on some older Powerbooks.

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@amigakit

Vut it's 'high profile' as shown?

What are the specs? CAS2 or CAS3?

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Are we not done with the same silly arguments and flames yet??!

@wegster

Its CAS3

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@amigakit

Is this RAM module also available for Canadian µA1-C users.

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---------
AmigaClyde

µA1-C 750GX@800 using OS4.1

@amigakit

That's excellent news!

I'll definitely be buying one, but I'll need to wait until the end of the month when I get paid.

Kind regards,

Francis

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@amigakit

Eh ... don't really know about his testing procedure, but as he stated before, that special rams are manufactured, because of incompability issues.

@mlehto

Wheres the thread?

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@amigakit

Sorry, @kgrach mention it every now and then. So it is here and there.

Here is one:

http://amigaworld.net/modules/newbb/viewtopic.php?topic_id=10690&forum=3#139944

Last edited by mlehto on 09-Apr-2005 at 08:37 PM.

@mlehto

Well last night I attempted to install Debian Linux on the microA1 with the 512MB SODIMM to further test it and it went through OK (apart from one small problem connecting to the US Debian mirror to download the base installation).

However, Debian isnt up and running yet due to read only configuration issue with the boot partition.

The memory seems very stable- if anyone has tests they want me to perform on the memory, please make a suggestion...

This memory is CL3 as per the original Apacer 256MB SODIMM.

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@amigakit

I used this memory test tool under linux ...

http://pyropus.ca/software/memtester/memtester-4.0.5.tar.gz

It is small and simple, yet quite complete set of tests.

It won't compile under OS4, it uses some mystical mman.h, memory management declarations.

It may be reliable test tool to catch incompatible/fault memory. It seeks flipped/walking bits allso, wich is said to be broblem with A1 machines with particular memory sticks.

It is allso possible, that these memory read/write errors occurs under heavy cpu load easier. My CPU fan is temperature guided, and under Linux installation procedure I can hear, that CPU usage is high. Maybe this is, why linux installation fails easily in some machines... (??) So one should make some continous cpu hoggy operations during test.

Lot of maybe ... sorry. It is not segured, that if memory stick won't fail under this test, it is ok, but this hopefully gives some good sense.

IMPORTANT. Good testing time is long, maybe 24 hours or more... here is one professor in university, who's best hobby is examine old memory simms and he makes over 48 hour test periods (yes, we all have our hobby... ).

Hope this helps.


This is from readme:

About the Tests
---------------

The following tests are from the original version, updated simply for speed
and rewritten to fit the new framework of the program. These tests will
mainly catch memory errors due to bad bits which are permanently stuck high
or low:
Random value
XOR comparison
SUB comparison
MUL comparison
DIV comparison
OR comparison
AND comparison

The following tests were implemented by me, and will do a slightly better job
of catching flaky bits, which may or may not hold a true value:
Sequential Increment
Block Sequential
Solid Bits

The remaining tests were also implemented by me, and are designed to catch
bad bits which are dependent on the current values of surrounding bits in either
the same word32, or in the preceding and succeeding word32s.
Bit Flip
Checkerboard
Walking Ones
Walking Zeroes
Bit Spread

There is also a test (Stuck Address) which is run first. It determines if the
memory locations the program attempts to access are addressed properly or not.
If this test reports errors, there is almost certainly a problem somewhere in
the memory subsystem. Results from the rest of the tests cannot be considered
accurate if this test fails:
Stuck Address

@amigakit

GGS Data also have 512MB's in stock now (the same?):

512MB - PC133, SODIMM 64Mx64 Synchronous DRAM DIMM.
133MHZ (PC133)
CAS/CL Latency: 3

Tested in AmigaOne µ-A1-C

1295 SEK

Perfect for all you Swedes and/or Scandinavians (and others as well )! GGS Data is a very good dealer!



http://www.ggsdata.se

Last edited by takemehomegrandma on 11-Apr-2005 at 02:49 PM.

@takemehomegrandma

Yep, Gunne is one of the good guys. Bought memory for my A1 through him

_________________
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Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@mlehto

Thanks very much

The memory has been on test since Nov last year with AmigaOS apps and general operation.

I will run the program you supplied and post the results back here.

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@amigakit

@takemehomegrandma & olegil

Thank You for the nice words !

hmm... is it something special behind... ?

Anyway, memory works fine. But it is of course needed to replace the ordinary memory module if upgrading, as there is only one memory socket.

Gunne