Performa 575 questions

Lord Refa

Active member
Hi all, picked up a 575 a couple of weeks ago at the System Source swap meet, missing the HD, so am using the plug-in bluescsi for now with the minimal 7.5.5 boot up, works fine. Was wondering several things about this machine, like how do I get the memory up past the current 36 meg (with 32 bit addressing on, I have about 30 meg free), or should I go higher? The same question about the video memory, is that upgrade-able? What about HD solutions, should I stick with the bluescsi, or is there a better way as I am looking to load software via the floppy and/or CD drive, like Warcraft. I am just not very conversant with bluescsi, but it appears the files you download are iso (?) files that work only with the bluescsi, correct? Does bluescsi allow you to load native floppy and cd files into it for use by the machine? Finally, the logic board was recapped, should I look into recapping the analog board, or just leave well enough alone? Thanks!
 

killvore

Well-known member
Hi and welcome!
For the BlueSCSI questions, this thread has a bunch of suggestions about how to use it for moving files between a modern machine and a BlueSCSI SD card, it's got a lot of neat things you can do. Please note that the OP wanted a solution that didn't involve running an emulator on a modern machine, and a couple of us missed that part 😅 But there is still useful stuff in there!


As for loading native floppy and CD images, there are quite a few applications that will allow you to mount floppy and iso images, so you don't usually need to create physical media - again, some good tips in the thread!
 

ymk

Well-known member
What about HD solutions, should I stick with the bluescsi, or is there a better way as I am looking to load software via the floppy and/or CD drive, like Warcraft. I am just not very conversant with bluescsi, but it appears the files you download are iso (?) files that work only with the bluescsi, correct?

ISO is a generic, raw format, not specific to any SCSI emulator. For a game with CD audio, like Warcraft, a BIN image is best because it preserves the soundtrack. If you'd like to play Warcraft with the original soundtrack, consider MacSD, which has a CD Audio output.
 

Cory5412

Daring Pioneer of the Future
Staff member
Just to add hopefully briefly w/re RAM: 36 is probably enough, it's probably well above and beyond anything you're likely to want to do with a 575, but "it depends".

Stock a 575 would've had like 8 megs of RAM, 12-20 or so gets you pretty well into 1993-1995-era multitasking, and 36 would serve well running a few different 1998-era internet apps all at once.

In terms of how you'd get to 132 megs, I think you just drop a stick in, but, it's kind of a judgment call as to whether or not it's worth it.

You could probably use more RAM if you did a lot of technical or multimedia authoring types of stuff, but those things may not be the most fun on a 575 with it's single 640x480 display. (Vs. on most contemporary Quadras you can do 1152x870, and even on the LCIII/630 you can get 832x624, and I believe the 475/605 can do 1152x870 as well, and then anything with NuBus slots of course gets you multiple displays.)
 

killvore

Well-known member
Also - unless you bypass the RAM check on startup, starting up your mac can actually take quite a bit longer with more RAM as the system performs a full RAM test. I put 4x32MB in my Quadra 650 and it takes aages to boot now! I think it's maybe possible to bypass in System 7.5 and up if you hold down the option key when opening the Memory control panel to reveal a hidden setting, but I might be misremembering. (My Q650 is on 7.1)
 
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