Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Question:

Question: Macintosh Performa 575 running out of memory ?

User uploaded file

My Macintosh Performa 575 with 8mb of ram runs out of memory when I try to go online.

I am using Netscape browser 3.0

Running System 7.1


What settings should I use to optimize memory performance?

32 bit addressing ?

memory byte size ?


What is the Max ram this computer can support ?


It works fine. Just when I enable Ethernet and try to go online I get a memory error.

that read "not enough memory".

Posted on

Reply
Question marked as Helpful

Jan 15, 2018 3:19 PM in response to alex7375 In response to alex7375

>What is the Max ram this computer can support ?


To begin with, you can easily answer questions of this kind yourself by going to Apple - Support - Technical Specifications (in this case, click on "Mac desktops" under "Browse Tech Specs by Product" and then repeatedly the "Load more results" button until you reach the older Macintosh computer in question):

Macintosh Performa 575:Technical Specifications


The same method can be used for manuals at Apple - Support - Manuals:

https://manuals.info.apple.com/en_US/0305349ALC575GS.pdf

https://manuals.info.apple.com/en_US/0306355BPRF500UG.pdf


See also sites like lowendmac.com and everymac.com.


>What size should my disk cache be set to ?

>And what size cache should I use? 384k , 764k , etc ?


You may want to look for The Macintosh Bible (for example, ISBN 1-56609-140-3, the 5th Edition, edited by Darcy DiNucci et al.) where detailed information about Memory control panel settings (and many other subjects) can be found.

Question marked as Helpful

Jan 15, 2018 3:19 PM in response to alex7375 In response to alex7375

It may not be a bad idea to update to System 7.5.3 (Apple made a full system available for download). System 7.5.3 has an Apple Extras folder with a Network Software Selector. If Open Transport is selected, the TCP/IP and AppleTalk control panels will be visible (if classic networking is chosen, MacTCP and Network instead). Setting up via Open Transport and the TCP/IP control panel is usually easy (typically, DHCP is used; DNS information is often not required). Please note that you will have a limited choice of web browsers (for http, not https).

There’s more to the conversation

Read all replies

Dec 8, 2017 7:13 PM in response to alex7375 In response to alex7375

Under memory setting in System-7.1 What setting should I select ?


Okay , I read that 32bit mode is only needed to address more than 8mb. or ram.

What size should my disk cache be set to ?

And what size cache should I use? 384k , 764k , etc ?

Dec 8, 2017 7:13 PM

Reply Helpful
Question marked as Helpful

Jan 15, 2018 3:19 PM in response to alex7375 In response to alex7375

>What is the Max ram this computer can support ?


To begin with, you can easily answer questions of this kind yourself by going to Apple - Support - Technical Specifications (in this case, click on "Mac desktops" under "Browse Tech Specs by Product" and then repeatedly the "Load more results" button until you reach the older Macintosh computer in question):

Macintosh Performa 575:Technical Specifications


The same method can be used for manuals at Apple - Support - Manuals:

https://manuals.info.apple.com/en_US/0305349ALC575GS.pdf

https://manuals.info.apple.com/en_US/0306355BPRF500UG.pdf


See also sites like lowendmac.com and everymac.com.


>What size should my disk cache be set to ?

>And what size cache should I use? 384k , 764k , etc ?


You may want to look for The Macintosh Bible (for example, ISBN 1-56609-140-3, the 5th Edition, edited by Darcy DiNucci et al.) where detailed information about Memory control panel settings (and many other subjects) can be found.

Jan 15, 2018 3:19 PM

Reply Helpful (1)

Dec 9, 2017 9:22 AM in response to Jan Hedlund In response to Jan Hedlund

OWC.com sells ram for this computer. It can support up to 64mb officially and 128mb unofficially.

I am going to add more ram before I attempt internet browser again.


The System keeps running out of memory and I want to eliminate the probable causes.

Dec 9, 2017 9:22 AM

Reply Helpful

Jan 10, 2018 6:40 PM in response to Jan Hedlund In response to Jan Hedlund

Okay , I upgraded the ram to 64mb and the 575 does not run out of memory anymore.


Now I am having a problem setting up TCP/IP.

Is standard TCP/IP supported in OS 7.5.1 ?

I believe Networking was setup initially on this Mac because they where able to download games.


When I try to setup TCP/IP networking I enter all My netowork info but I cant tell if it is conneted or using an assined IP address. How can I check the IP settings ?


When I enter a website address I get this error "No DNS entry found "


I have the proper DNS server and IP addresses entered.

Jan 10, 2018 6:40 PM

Reply Helpful
Question marked as Helpful

Jan 15, 2018 3:19 PM in response to alex7375 In response to alex7375

It may not be a bad idea to update to System 7.5.3 (Apple made a full system available for download). System 7.5.3 has an Apple Extras folder with a Network Software Selector. If Open Transport is selected, the TCP/IP and AppleTalk control panels will be visible (if classic networking is chosen, MacTCP and Network instead). Setting up via Open Transport and the TCP/IP control panel is usually easy (typically, DHCP is used; DNS information is often not required). Please note that you will have a limited choice of web browsers (for http, not https).

Jan 15, 2018 3:19 PM

Reply Helpful (1)

Jan 12, 2018 8:43 PM in response to Jan Hedlund In response to Jan Hedlund

Woohoo !....I got it working.

I just had to select "Ethernet" and enter an IP address in manually.

Works great now.


I was able to get to "Macfixer" website and download System 7.5.3.update.


I am only using about 8mb of my 64mb total.


User uploaded file User uploaded file

Jan 12, 2018 8:43 PM

Reply Helpful

Jan 14, 2018 5:15 PM in response to alex7375 In response to alex7375

What is the largest capacity drive supported on my Performa 575 ?


The info I have about my hard-drive reads


200mb. used out of 200,000,000 bytes?


What does this mean ?


How large is my hard-drive in size ( mb. )

How much of my hard-drive is used up?


Are there any apps available for info about my hard-drive in System 7.1 ?

Jan 14, 2018 5:15 PM

Reply Helpful

Jan 14, 2018 7:49 PM in response to alex7375 In response to alex7375

https://en.wikipedia.org/wiki/Megabyte


There are several methods for finding information about a hard disk drive, apart from looking at the label. To begin with, one could select the hard disk icon and then choose Get Info from the File menu. A better way may be to double-click on the hard disk icon; the information is in the open window (n K in disk, n K available). Some formatting applications could possibly be useful, as well as utilities similar to TechTool Lite.

https://archive.info-mac.org/_Disk_&_File/


A Performa 575 running System 7.1 has a 2 GB volume size limit (4 GB with System 7.5). With a larger hard drive, one could create multiple volumes (each just under 2 GB).

Macintosh Operating System: Maximum Volume Size

Jan 14, 2018 7:49 PM

Reply Helpful
User profile for user: alex7375

Question: Macintosh Performa 575 running out of memory ?