1993 MAC EMULATOR MOD
1993 MAC EMULATOR SOFTWARE
1993 MAC EMULATOR PC

I worked on becoming more familiar with the abilities of floppies, the USB floppy drive, and images of or Mac formatted disks. $ sudo dd if=/home//Desktop/SSW6-ZIP42.image of=/dev/sdb bs=84 skip=1 creating classic mac boot floppies in os x - 10:15 PM

Writing an image that was created with certain versions of DiskCopy (DiskCopy on System 7) requiree extra parameters to dd.

1993 MAC EMULATOR SOFTWARE

I was very impressed when finally, software that was loaded onto a floppy using my modern computer was working on a PowerBook Macintosh from the 90s for the first time!ДЄ floppy is mounted in WSL using these common UNIX commands. The Kali VM provided an interface for the external USB drive to appear as a physical drive whereas I was unsuccessful finding an approach to doing that using WSL. I spent a while working with WSL (Windows Subsystem for Linux) until I found a forum thread that recommended something I had not considered. Of particular interest was the CopyRoms image above.

I knew if I could find a way to get the UNIX utility dd (device-to-device) to reach the physical floppy so that a RAW HFS image could be written to a physical floppy then I would have a way shuffle data to the PowerBook. CopyRoms here is supposed to grab the PowerBook ROM which is necessary for virtualization/emulation but on my first try it only created a 0 byte file named PB165.ROM so I emailed the developer. I am making progress and finding appropriate and useful Mac software on the internet that I could bring over to the PowerBook. From there I found this incredibly resourceful website. With that, I focused a bit and found this very comprehensive article.

1993 MAC EMULATOR MOD

I also read about an elusive mod board called Catweasel which appears to be made in Germany (if at all) yet if I had my hands on one it purportedly connects to a modern floppy drive and adds variable spindle speed functionality. If I had a modern USB floppy drive that could read/write Mac formatted images then files could be correctly stored and archived on another medium. They also do not support Group Coded Recording (GCR) encoding - only Modified Frequency Modulation (MFM) - lots of internet articles are around about GCR and MFM. They are constant angular velocity drives (constant rotational speed).

1993 MAC EMULATOR PC

'USB floppy drives: Only 720K PC (FAT12) and 1.44MB disks supported: their controllers do not support constant linear velocity read/write mechanics (where the rotation slows down towards the outside of the disk to cram more data in per angular unit of length, assuming an inside to outside radii progression).

This variable speed is even audibly noticable on the 165c. What this does is allow the heads to keep up by keeping the linear velocity of the spinning disk constnat relative to the read/write heads which provided 80,000 more bits to be stored on a disk. A variable spindle speed floppy drive can basically spin faster when the heads are near the center of the disk and likewise slower when the heads are near the outside of the disk. There is nothing physically different from a 720K (2^19.49 = 737,280 bits) disk and an 800K disk. According to the paragraph 'And What About DD Floppy Disks?', towards the bottom, the only way to read data off of 400K/800K floppies is to find a functioning Macintosh with a floppy drive that has GCR coding (Group Coded Recording) and variable spindle speed functionality.Д«y the 28th I finally understood the 3.5 floppy disk zoo. The first significant lead I came across on my journy was this article. My goal however was to make all this vintage data and software maybe not useful but at least usable again. Lo-and-behold using the correct power supply fixed the first easy problem. This felt power related so I looked up the correct power cord online and bought one. The first problem I ran into though was when a floppy was put in, if the screen brightness was anything above minimum the device would just click off immediately. I had no idea if it was going to boot or if any of the data including on the floppies could ever be useful again. I inherited a Mac PowerBook 165c in August 2019 accompanied by a crate of 3.5 floppies. These computers were based on the Motorola 680x0 microchip. Welcome to my page on when I found a way to image the data off of (the first computer I ever used) a 1993 Macintosh PowerBook 165c. Macintosh 1993 Macintosh PowerBook Forensics

1993 mac emulator