Subject: Re: More fun at the thrift store
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From: supertimer@aol.com (Supertimer)
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Date: 17 Apr 1999 04:18:43 GMT
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creslin <reply.by.newsgroup@nospam.com> wrote:

>From beneath the ruins of what was once the most prosperous section of
>town, I rescued a IIe that had been upgraded to a IIgs - same original
>case and everything.  The machine was loaded with cards, including a
>Vitesse scanner controller, a 4 meg SIMM card, a Ramfast rev D SCSI
>controller, a Sonic Blaster, and a Zip GSx, v1.02.  Everything seems to
>be in working condition.
>
>Despite shipping with a SCSI controller, I had to provide my own hard
>drive.  I installed GS/OS, and noticed two things: first, the ZipGSx
>didn't seem to be accelerating *anything*; second, I got a "low memory"
>error message.

Scott Alfter describes the Zip dip switches as follows:

1-1 Cxxx/Dxxx cache disable (default: on--enables caching of 0xC000-0xDFFF)
1-2 joystick delay (default: off--slows system down for joystick access)
1-3 AppleTalk delay (default: on--allows AppleTalk to work properly)
1-4 counter delay (default: off--self-test will fail)
1-5 CPS follow (default: off--ZipGS disables @ 1 MHz)
1-6 ZipGS disable (default: on--ZipGS enabled at boot)
1-7, 1-8 cache size
    size 1-7 1-8
    ---- --- ---
     8K   on  on
    16K   on off
    32K  off  on
    64K  off off

2-1 through 2-7 slot delay (enabled for slot n when switch n is on)
2-8 speaker delay (default: off--doesn't slow down for 0xC03x access)

So I suspect you need to flip switch 1-6 to the opposite position it is
in right now in order to actually accelerate your unit.

>If I load GS/OS without any desk accessories or extensions, I get into
>the OS just fine, with all 4 meg available.  The ZipGSx still doesn't
>seem to be doing anything.

Zip GS will kick in if you change the position of switch 1-6.

>I've never worked with a ZipGS before, and I'm not sure if it could be
>responsible for the memory error message.  I don't know where to find
>the ZipGS CDAs, and I don't know what the DIP switches on the card
>control.  Can anyone point me in the right direction?  What's giving me
>the error message?

I do not think the problem is with your ZipGS.  More likely, check
your memory card's SIMMs and make sure the jumpers or DIP
switches on the card are set correctly for the memory that is
installed.

If it is not the hardware, check to make sure you do not have a set
of corrupted System 6.0.1 install disks.  Good luck!