-About Barrel Batterys in A2000/A4000/A3000

[Jope]

The A3000 will lose it's battmem settings for SCSI when you remove the battery.

Often this is not a problem, the machine will boot up and work. However if you have a HD that requires battmem to be set in a certain way for maximum performance, you will take an io penalty.

I just take any old 3.6V NiMH battery and replace it. The last few I did were cordless phone batteries that I just affixed to the motherboard somewhere.

I like real time clocks. It's so stupid to have all your files dated 1978.

[Jope]

Maybe thats right if you have only 1 Amiga and this uses for all things, but if you have more Amigas (Like me!) and you know wich kind of uses give to those Amigas then, not problem if a couple of Amigas not have a Battery.

All the Amigas I have boot to a workbench when I turn them on. If I create any file, be it a disk image or anything, it's going to have a wonky timestamp unless I set the time manually, if the battery is missing..

If its much problem, you can write a Script in the Startup for Set the Date and Hour and Done!. How much time you spend setting a date?.. 10 - 15 seconds?..come on!-

No, I won't come on. :-D Why should I do it manually when I can just replace the leaky battery?

Even then I'd rather set up my tcp/ip-stack to get the new date via ntp than typing it in myself.

[Jope]

Yeah.. thats the reason of this post.. becouse i hear  that happen, in both Amigas (A2000 / A4000), if you remove the battery and not replace with other (Coin or Barrel) not work again.

Then they destroyed something while removing it.. The only Amiga that has potential to stop booting without a battery is the twice-mentioned A3000.

[Jope]

... which can easily worked around by hitting the three finger salute after the drive has spun up.

It all depends on what battmem bits your SCSI chain expects you to have set. :-)

I have yet to have an A3000 not boot after amnesia (I have owned three), so with any "modern" (made after '95 or so) drive and correct termination, I'd say you don't need to worry about the battmem..

The potential exists, however. People get hand-me-down computers that are in the same configuration as after they were set up in 1991, and they can contain anything. So make note of the battmem contents before you remove the battery. It's not hard, it will save you a lot of hassle, in the end you probably will end up not needing the settings anyway. But if you do, you'll pat yourself on the back for it.

[Jope]

I have yet to have an A3000 not boot after amnesia (I have owned three), so with any "modern" (made after '95 or so) drive and correct termination, I'd say you don't need to worry about the battmem..

Finally got around to buying a barrel battery for the latest A3000 I've acquired.

In Amnesia mode, SCSI throughput was around 2MB/s.. Now that I have a working battery and properly configured (basically just set sync=1) battmem, transfers go at 6MB/s..

I'm very happy that I replaced mine. Everyone else's mileage may vary.

(880th post, yay.)