[comp.sys.amiga.hardware] A2620 RAM test program

etxtomp@eos.ericsson.se (Tommy Petersson) (12/21/90)

I have an A2620 with possible RAM problem. What I need is a RAM test
program, of course preferably one which pointed out a bad chip. When
I mentioned this a long time ago, Dave H said something about having
started on such a program once, but never finished it. Has Dave H or
anyone else written such a program? If not so, maybe you know of RAM
test programs that at least says if the memory is good or bad but is
not A2620 specific? It is annoying not to know where the problem is.

Thanks in advance,
Tommy Petersson

daveh@cbmvax.commodore.com (Dave Haynie) (12/21/90)

In article <1990Dec20.162218.10769@ericsson.se> etxtomp@eos.ericsson.se writes:
>I have an A2620 with possible RAM problem. What I need is a RAM test
>program, of course preferably one which pointed out a bad chip. When
>I mentioned this a long time ago, Dave H said something about having
>started on such a program once, but never finished it. Has Dave H or
>anyone else written such a program? If not so, maybe you know of RAM
>test programs that at least says if the memory is good or bad but is
>not A2620 specific? It is annoying not to know where the problem is.

The simplest thing would be to try out the memory test in the A2620.  Fire
up the system with the mouse buttons held down, and while still holding them
down, type "M" when the menu appears.  That'll put you in the A2620 monitor,
used by UNIX type in the past for debugging and all.  Now, to run a test
on a 4MB system, you type:

	T 200000 600000

The machine runs patterns through memory and yells if it find an error.  This
is far from ideal, and it doesn't point at the memory chip that looks bad, only
the memory location.

>Thanks in advance,
>Tommy Petersson


-- 
Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests"
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