MikeRF/A2 <[EMAIL PROTECTED]> writes:

I just dumped my 9500 after spending way too much time and frustration with the case design trying to figure out it's issues. I purchased a G3 Beige/266/DVD MT described as being in almost like-new working and cosmetic condition for $69. I have several Macs (8500, iMac DV+, iBook/700 Dual USB) but this is my first experience with the G3 model.

  Apple's original specs say the RAM is PC66 3.3v168 pinSDRAM but I
have seen RAM being sold for the G3 listed as PC100. Can someone
please clarify the best latest available RAM I can use in this
machine?

PC100 RAM is (supposed to be) backwards compatible with PC66 RAM, so many
vendors don't stock PC66 RAM anymore. As long as you deal with a reputable
vendor who will allow exchanges/refunds for any memory that doesn't work
you should be fine.


Furthermore, this bit of confusion is from an Apple G3 download manual:

"*Warning* Do not connect any SCSI devices to the external 68-pin
SCSI-3 connector or to
the internal 50-pin SCSI-2 connector on the PCI card that supports
the internal hard disk.
Connecting even one external SCSI device to the external 68-pin
connector extends the
overall cable length of the SCSI bus beyond the limit for which
error-free operation can be
guaranteed; the combined length of the internal cable and the
external cable reduces the
reliability of all the devices connected to the Ultra Wide SCSI bus.
Connecting a device to
the internal 50-pin SCSI-2 connector will cause your Ultra Wide SCSI
devices to transfer
data at the slower, SCSI-2 rate."

Why are these connectors there if you can't use them?  This machine
must be able to support multiple drives!?

I interpret that to mean that they support multiple drives, but only on the internal UW bus. It probably has a stripped-down OEM SCSI card that retains multiple connectors but only has one SCSI bus. So using an external connector makes the bus length too long and using the narrow internal connector makes the whole bus run at narrow speeds.

The bottom line is that it's really not a very versatile SCSI card.  I
believe they were provided only as an alternative to the Beige's IDE/ATA
bus (which was particularly slow); and only for the internal HD(s).

If you want to utilize some external SCSI devices you'll need to either
replace your existing SCSI card with a better one or else add a second
SCSI card.

If you want to add more internal SCSI devices, you can probably replace
your internal UW cable with one that has more connectors as long as the
overall cable isn't too long.  If you have narrow SCSI devices, you can
attach them to a wide bus via an adapter (it shouldn't tank the
performance of the whole bus).

Hope this helps,

-Jeff    [EMAIL PROTECTED]
--
"You can't brew a premium lager with a Kool-aid mentality." --Harold
Green in _The_Red_Green_Show_


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