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Author Topic: chipmemsize A4000  (Read 2240 times)

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Offline amiga4001Topic starter

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chipmemsize A4000
« on: February 28, 2005, 08:23:12 PM »
Rebuilding my spare A4000 I tried to use a doublesided simm of 8 MB EDO.
Guru,guru....(8000 0006 task 07009E60)and if it boots on diskdrive it hangs a while later while trying to acces the HD(IDE).
I also tried a non EDO simm ds of 8 MB same....
Does the computer need a 1 or 2 Mb simm size?
I know total size chipmem is max of 2MB.
But I used to run a 4000 with a bigger simm that worked.
Any advice please..
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Offline seer

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Re: chipmemsize A4000
« Reply #1 on: February 28, 2005, 10:13:59 PM »
IIRC the A4000 can only handle 1MB, 2MB or 4MB simms. Could be the the simms slot for chipmem only handles 2MB..
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Offline SamuraiCrow

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Re: chipmemsize A4000
« Reply #2 on: March 01, 2005, 02:01:37 AM »
It's the EDO that's making it throw fits.  Get a FastPage SIMM instead.  (Same goes for fast ram.)
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Offline amiga4001Topic starter

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Re: chipmemsize A4000
« Reply #3 on: March 01, 2005, 06:49:29 AM »
Tried a 4 Mb simm module(non EDO) but still guru and hangs.
Also there is the problem that not all harddisks are being recognised properly.
Some are seen some are not.
Booting from diskdrive is no problem.
Is my spare one dead?
Could it also be a harddisk type problem?
Tried 3 of which one a gvp(scsi file card inc 8 MB) all had prblems.
Also the keyboard capslock starts to flash after a while.
Not a serie but regular flashes that is.
 
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Offline Framiga

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Re: chipmemsize A4000
« Reply #4 on: March 01, 2005, 09:45:58 AM »
Post your FULL hw/sw configuration.

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Offline Jope

Re: chipmemsize A4000
« Reply #5 on: March 01, 2005, 12:28:18 PM »
I seem to remember that the CHIP RAM SIMM needs to be double sided..

Never had to do that myself, however - my A4000s have the original CHIP SIMM installed.
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Offline whabang

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Re: chipmemsize A4000
« Reply #6 on: March 01, 2005, 01:51:39 PM »
It is possible to use 8 Mb SIMMs for Chip-RAM, but the AGA-chipset can only detect 2 Mb.

8000 0006 means memory i/o error...
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Offline whabang

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Re: chipmemsize A4000
« Reply #7 on: March 01, 2005, 01:52:39 PM »
Quote

Jope wrote:
I seem to remember that the CHIP RAM SIMM needs to be double sided..

Never had to do that myself, however - my A4000s have the original CHIP SIMM installed.

There is no such thing as a double-sided SIMM. If it has two sides, then it's a DIMM. :-)
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Offline Doobrey

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Re: chipmemsize A4000
« Reply #8 on: March 01, 2005, 04:17:39 PM »
I hope that`s just your Swedish sense of humour whabang..
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Offline Piru

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Re: chipmemsize A4000
« Reply #9 on: March 01, 2005, 04:25:15 PM »
Quote
8000 0006 means memory i/o error...

Nope, the CPU has executed CHK or CHK2 instruction with true condition (exception 6 generated).

Amiga programs don't use CHK or CHK2 instructions, so this means things are going horribly wrong at some point. However, because the Amiga is able to display a guru of some sort means that at least part of the memory is working fine.
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Offline Piru

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Re: chipmemsize A4000
« Reply #10 on: March 01, 2005, 04:26:59 PM »
Quote
There is no such thing as a double-sided SIMM. If it has two sides, then it's a DIMM.

SIMMs and DIMMs come in both single and double side flavors.
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Offline amiga4001Topic starter

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Re: chipmemsize A4000
« Reply #11 on: March 01, 2005, 07:50:31 PM »
Hardware specs: amiga4000 rev:b 68ec030 processorcard A3200
GVP 2000 HC-8 series II scsi controller fully populated with 8 MB.
Plugged in a (I think 2Mb) simm module and 2 modules of 4 MB.
Tried booting with a seagate harddisk (ST3491-A) with 3.9 installed crashes.
Tried booting with diskdrive with same seagate harddisk stops booting.

Tried an other seagate harddisk (medialist 4321) but this one does not boot at all.
But tried that disk before and know it wasnt 100% OK.

Also tried a fijutsu but this drive is not recognised.

Tried the same drives on other motherboard(also battery leakage ) but with same result.
I am thinking of a harddisk problem here.

When I boot of the GVP file card with no IDE harddisk attached it boots nicely.
With one of the harddisks on the IDE port it stops or gurus on both my A4000 motherboards.

Will try to get my hand on an other harddisk.
any reccomandations?
and try tomorrow.
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Offline amiga4001Topic starter

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Re: chipmemsize A4000
« Reply #12 on: March 02, 2005, 04:42:43 PM »
Just purchased me an other harddisk and tried again.
System boots nicely also when I reset it multiple times.
But when it has worked for one hour or so and I shut it down it wont boot any more.
Both my spare A4000 have this problem now.
Strange...
Think there is a chip broken.
Maybe one of those famous CIA's?
Must be a chip what also does IO-handling.
But on the other hand that are almost all chips?
there is no software testprogramm?
Btw also tried a different processorcard but with same results.
And different simm sizes.(only EDO gives real problems green screen).
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Offline whabang

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Re: chipmemsize A4000
« Reply #13 on: March 03, 2005, 12:30:00 PM »
Quote

Doobrey wrote:
I hope that`s just your Swedish sense of humour whabang..

Yes! ;-)

However, it shouldn't really matter as long as the module is a standard compliant SIMM, should it?
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Offline whabang

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Re: chipmemsize A4000
« Reply #14 on: March 03, 2005, 12:33:48 PM »
Quote

Piru wrote:
Quote
There is no such thing as a double-sided SIMM. If it has two sides, then it's a DIMM.

SIMMs and DIMMs come in both single and double side flavors.

I was kidding.
Haha?
No?
Nevermind, then...
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