My A500 "project" pics, details, build log?

[djos]

As I mentioned before, the HDD has inbuilt active termination... can either be either bus powered, self powered, or provide power to the bus...

http://ftp://ftp.seagate.com/pub/acrobat/install_guides/hawk/67471c.pdf

It's set to self powered at the moment.

Ok, that's how i'd have configured it too - great manual, you dont see them like that anymore!

how thick and flexible is the scsi cable for the CD-ROM drive? the very flexible onse where usually only single shielded and very prone to issues, dual shielded or better is the best option (I have a couple that might be of use - only issue is they use the HD50 connectors).

[djos]

Yeah that could easily cause the problem you are having as Copying files definitely uses any fast mem available.

Can you remove the ram chips and clean up the contacts (fine grit sandpaper works well) so see if it passes the mem-test then?

[djos]

It only sometimes fails, Ive removed it from the startup sequence, still crashes.

try removing the midget all together?

[djos]

Worked without the MMR... copied about 100 megs...

put the MMR back in... failz... :/

Bugger!

[djos]

Do you have any other fast ram installed like tom's 8mb?

[djos]

True, how much ram is on the MMR and will it work with it removed?

[djos]

Ah, might be time to retire the MMR and wait for the Zeus68k or aca500 to arrive.

[djos]

lol, have you inspected the MMR for dodgy solder joints etc?

[djos]

I've got one of Kipper's auto-config 8mb boards in the mail now and Im fairly certain it'll solve some issues I have - from my testing in WinUAE it seems that you need an auto config fast ram board to prevent the OS from wasting half your chip-mem!

[djos]

When I get my auto config 8mb board ill bring it over if you like to see if that works?

[djos]

Kipper mailed it to me last week

As you say worth a try, fun to experiment anyway.

[djos]

2mb fast ram is usually enuf for WHDLoad iirc.

[djos]

I'm running 1mb chip ATM with 8mb non-auto config fast ram which means about 500k chip ram gets wasted by ClassicWB and most games still work in whdload.

[djos]

got fastmemfirst in your startup sequence?

That's not a valid command in WB3.1

[djos]

Hmm, I might try that.

That's not too bad, my cf-IDE isnt much faster @ 580,000 bytes per second.

[djos]

what do folks use for stress testing chip & fast ram?