De Wiikipedia:
Computers using Classic Mac OS can connect to AFP 3.x servers, with some limitations. For example, the maximum file size in Mac OS 9 is 2.0 gigabytes. Typically, Mac OS 9.1 or later is recommended for connecting to AFP 3.x servers; for versions of Classic Mac OS prior to 9.1, installation of the AppleShare client 3.8.8 is required.
http://en.wikipedia.org/wiki/Apple_Filing_Protocol
http://en.wikipedia.org/wiki/AppleShare
Luego:
http://docs.info.Apple.com/article.html?artnum=16145
AppleShare Client and Mac OS Releases
System Software
Recommended AppleShare Client
System 7.5 and earlier AppleShare Client 3.5
System 7.5.1 through 7.5.2 AppleShare Client 3.6.5
System 7.5.3 through 7.5.5 AppleShare Client 3.7.4 with Open Transport 1.1.2
Mac OS 7.6 through 8.0 AppleShare Client 3.8.3
Mac OS 8.1 through 9.0.4 AppleShare Client 3.8.6. (See Note 4)
Mac OS 9.1 AppleShare Client 3.8.8
Mac OS 9.2.1 AppleShare Client 3.9
Por lo cual supuestamente deberías instalarte el AppleShare Client 3.7.4 en tu PPC 6500 :
http://endeavor.med.nyu.edu/download/ppc/AppleShare_Client_3.7.4.img.bin
Te tiro estos datos por si te son de utilidad, seguramente algún experto en "Classic" podrá aportar más.
Mac Pro 12-Core/HT Xeon 3.46 / 128 GB DDR3 / 2 TB SSD M.2 PCIe + 5.5 TB HDD / GTX 680 4 GB Classified/ Blu-Ray SuperDrive / USB3 / iSight FW
Mac Pro 12-Core/HT Xeon 3.46 / 64 GB DDR3 / 1 TB SSD / Radeon 580 3 GB / Gigabyte Titan Thunderbolt.
MacBook Air 13" / i7 / 8 GB DDR3 / 256 GB SSD / MacBook Air 11" / i5 / 4 GB DDR3 / 128 GB SSD + MacBook 12" / Core m3 / 8 GB LPDDR3 / 256 SSD. TB Cinema Display 27".
iPhone 15 Pro Max 256 GB Blue / iPad Air 2 64 GB Wi-Fi+LTE / AirPods / Apple Watch Serie 5 Silver GPS / Airport Extreme & Express / Magic Mouse / Mighty Mouse BT / Alu Keyboard / HK SoundSticks II
