This reminds me that I still need to get back onto repair of our 520
that my son has taken to...thanks for the info.
Mark
On 4/2/19 10:08 AM, Jeff Hubatka wrote:
Good news on the 520, that was the first portable I ever purchased
back in 1996 and I still have that machine. Below are a few answers....
On Monday, April 1, 2019 at 10:38:34 PM UTC-7, Charlie Eddy wrote:
Hello,
I have a lot of questions.
1. Are there online resources on this operating system?
Archive.org has a downloadable pdf book about System 7.5.
3. Is the large, rectangular, 30-pin (6x5) connector the AAUI I've
been hearing about? How do you get one of those?
That is the SCSI connector, it takes an adapter to then connect with
standard SCSI cables. The AAUI looks like a small VGA port, which
requires an adapter to connect with ethernet.
5. What is the display issue I'm experiencing? Bulb or
wire-related? (I.e., certain positions of display hinge cause
blurriness or white-out... pressing on the side makes it go away
sometimes, and rotating the hinge makes is go away other times.
That sounds like it is cable related. The display cable is somewhat
difficult to reach, mostly because the microphone cover is so fragile.
Only two tiny clips hold that in place and even 20 years ago they
broke easily.
6. Is it normal to wait a moment after every interaction? Like,
clicking the next page arrow in Apple Guide takes a second? (well,
half-second?) Or should I consider upgrading something?
It is an old computer, running at just 25mhz so patience is required.
You can upgrade the processor card to something from a 540 which is 33
mhz. Might even get lucky and find the PowerPC upgrade which runs at
100mhz, that is what I have in mine.
8. If I have a TelePort Platinum Fax/Modem, can I obtain what I
would possibly anachronistically consider a "generic" network
connection? Such as: Send/receive email. Run a program like the
Lynx browser or iCab. Download binaries. Do AOL stuff. Print on
printers.
You can print to an old Apple-compatible printer via the printer/modem
port.
9. How do I find out if this computer can run TCP/IP or merely
AppleTalk's implementation of AFP?
System 7.5 has TCP/IP built in, it will let you connect with a bit
more modern Macs.
11. What exactly are Extensions? Are they kexts? How are they
accessed when the user holds the spacebar during boot?
Holding spacebar during boot turns off extensions. They are located in
the extensions folder.
12. How can I get a copy of HyperCard? ResEdit? MacsBug? MPW?
You can find some old Mac software at Macintosh Garden, also there are
some files at Archive.org. To get files onto the computer you will
need either floppy, a SCSI CDROM or ethernet.
Regards,
Charlie Eddy
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