>It seems that 'hardware-wise', it's OK to have both buses fully >populated with devices, but most of standard software will go crazy >looking at it! :-)
The machine was designed to accommodate five internal HDs, and at least in the WGS 95 incarnation it will accommodate a CD-ROM and a tape as well. The five HDs are designated A, B, C, D and E, and each one has its own SCSI ID switch. So also does the tape drive. The CD-ROM is semi-permanently set as SCSI ID=3. It is possible to install the "five drive shelf" on a Q950, although the standard "Q" SCSI cable is incorrect for this accessory. It is also possible to install the WGS 95's CD-ROM and tape bezels on a "Q", but the same comment as to the SCSI cable applies. A maxed-out "Q" has all possible SCSI IDs in use: the CD-ROM is 3; the tape is usually 6 (switchable); the two basic HDs are 0 and 1 (switchable); the three additional HDs are usually 2, 4 and 5 (switchable); the Mac is always 7. With a properly configured 7.6.1 system (or perhaps with the SCSI Manager 4.3 extension taken from 7.5) there should be no conflicts after startup is complete. Application software doesn't know one SCSI bus (0, e.g.) from another (1, e.g.). System software and utilities released concurrently or after 7.6.1 will know one bus from the other. 7.6.1 was used on PCI PowerMacs, and except for the 7200 these have two SCSI buses, just as the "Q" does. -- Quadlist is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Enter To Win A | -- Canon PowerShot Digital Cameras start at $299 | Free iBook! | Support Low End Mac <http://lowendmac.com/lists/support.html> Quadlist info: <http://lowendmac.com/lists/quadlist.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/quadlist%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
