Re: Apple IIGS Memory Expansion Card question.

[Mitchell Spector <mitch2gs@hotmail.com>]

"Jonathan Herr" <dracosilver@wi.rr.com> wrote:

>
>"Mitchell Spector" <mitch2gs@hotmail.com> wrote in message
>7irg519tvr7gf2dv519rmgd73f212hj520@4ax.com">news:7irg519tvr7gf2dv519rmgd73f212hj520@4ax.com...
>
>>     When seeking these out, not only do they need to be 256Kx1, 16-pin
>> DIP and 150ns or faster, but follow CAS before RAS for the refresh order.
>> For the later, I'd have to dig up a list of manufactures and chip batches
>> that didn't follow this, though these days your best bet is to just pull the
>> chips off an old PC board (8088, 8086, 286), plug them in and then run
>> a disk-based RAM diagnostic on the IIgs.
>
>Any place to download this RAM diagnostic tool?
>
>I just recently upgraded my Apple IIGS to 1mb on an apple card + standard
>ram

    There is an Apple dealer diagnostic disk called "Apple II Diagnostics"
(the latest I have is version 3.0) that detected what model it was running
on and performed a whole slew of tests. On a IIgs, it'd test on-board and
expansion RAM among other things.

    I can't remember if I uploaded it anywhere in the past, but I'm not able 
to find it now on any of the FTP sites. If anyone is interested I can dig it
up, it actually recognizes the difference between a II+,e,c,c+ and GS
and changes the test options accordingly (it uses the AppleWorks style
interface if that rings a bell with anyone). 

    Meanwhile, try "Bit Banger" which can be downloaded from here:
ftp://ground.ecn.uiowa.edu/apple2/Mirrors/trenco/utils/diagnostics/bitbanger10.shk
 
    Also worth mention, on the third AppleWorks GS diskette, there's a
utility included called "MemoryTest.CL" that tests expansion cards.
I know for less common cards like my 8 MB RAM GS Plus (aka CV-RAM)
you need a specialized diagnostic written for that card.

Mitchell Spector