Author Topic: G3 B&W!  (Read 379 times)

Offline FBz

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G3 B&W!
« on: November 10, 2021, 05:40:23 PM »
This is something of a continuation from:
http://macos9lives.com/smforum/index.php?topic=5436.msg45786#msg45786

The following (below) from : https://apple.fandom.com/wiki/Power_Macintosh_G3_(Blue_and_White)

Issues
Early "Revision 1" blue & white G3s had IDE controller problems, which made it impossible to connect two hard drives and also resulted in data transmission problems with drives containing newer controller boards. The logic boards of the "Revision 2" units have a revised IDE controller which allows two hard disks, and works correctly with newer drives, within the 28-bit LBA constraint. The Revision 2 units also contain a hard disk bracket designed for two drives and an updated graphics card.

Note: B&W G3 used here was originally a 300 MHz with Rev.1 board - recently replaced with a Rev.2 board and overclocked CPU to 400 MHz - to closely mirror Petros90’s U.K. B&W. And THIS new/used Rev.2 board has same (circa 1999) Apple part / I.D. number 820-1049-A as did the original Rev.1 board.

How can you visually differentiate between a Revision 1
and Revision 2 "Blue & White" Power Mac G3 model?


The CMD chip on Rev. 1 logic boards is PCI646U2 and on Rev. 2 logic boards is 646U2-402. To find the location of the CMD chip on the logic board, get a flashlight & shine it on the chip near the left rear of the motherboard as you face the open case. Just look for the hyphen in the number. If you have a hyphen you are on a Rev. 2 motherboard. - EveryMac.com

*No previous adapter testing was done here with any G3 and more specifically, none with a B&W. (In the SSD adapter thread: http://macos9lives.com/smforum/index.php/topic,5436.msg39965.html?PHPSESSID=4ef84517a63f0bb481c942a9fcc8c9e1#msg39965



It all… Depends!
Note the jumper settings that work in this instance with the Seagate Barracuda (right graphic above). And then note recommended jumper setting for the Western Digital Caviar HD which suggests a single jumper placed for “Dual Master” - which does not work with the SSD+ adapter (set to slave). Instead, leaving all jumpers off (as noted for “Single, Standard Installation - left graphic) does work. Confused yet? Further testing with other conventional drives is warranted.

But this isn’t the desired two SSDs on a ribbon cable arrangement. It does allow the added performance of one SSD (for OS and apps?) plus the conventional drive (for file writes and storage?)… while also reducing the overall power demands and heat of any previous, 2 conventional HD arrangement. And REMEMBER, DieHard's got the EVB-003-02 adapters for $3.99 each! http://macos9lives.com/smforum/index.php/topic,5436.msg44513.html#msg44513 (U.S. shipping only, included.)

AND I now wonder about same arrangement for the Quicksilvers? (MDDs are still restricted to one SSD with the EVB-003-02 jumpered as Master - due to MDD’s Cable Select jumper requirement.) So, care to join in all the fun? Test your conventional drive with an SSD + EVB-003-02 adapter in a B&W… and report your findings & jumper settings.

Will eventually test here with other & larger conventional drives - but for now, this is a rock-solid enough reason to try the ultra-inexpensive EVB-003-02 / Bribge adapter with an SSD… in a G3 B&W! Hopefully, more B&W related info (and fun) to follow in this thread from: (1). Petros90’s B&W project, (2). some further details from my B&W adventure AND (3). input from other G3 B&W users here.

Ever have the notion that the B&W G3’s suffered from “Middle Child Syndrome” as they were machines “right in-between”?
[Don’t even mention a Lombard!] ::)




« Last Edit: November 10, 2021, 06:21:34 PM by FBz »

Offline DieHard

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Re: G3 B&W!
« Reply #1 on: November 11, 2021, 09:36:38 AM »
Quote
AND I now wonder about same arrangement for the Quicksilvers? (MDDs are still restricted to one SSD with the EVB-003-02 jumpered as Master - due to MDD’s Cable Select jumper requirement.) So, care to join in all the fun? Test your conventional drive with an SSD + EVB-003-02 adapter in a B&W… and report your findings & jumper settings.

Yes, I think FBz deserves a little help here after spending countless hours on the B&W saga.  I no longer have a B&W G3 so it's up to you guys :)

Offline FBz

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More G3 B&W
« Reply #2 on: November 16, 2021, 12:41:27 PM »
Notes, Tips and Random B&W Drivel

Do yourself a favor and save time between reboots & testing.
TURN OFF Startup Memory Tests!
(Works w/ other OS 9 machines too.)

(1). Open System Folder.
(2). Open Control Panels.
(3). Hold down Command Key & Option Key when opening Memory Control Panel.
(4). When open - you’ll then see the option to turn this off at bottom of the window.


Don’t know why VM is turned on here? It’s a mystery.

Added heatsink fan for overclocked CPU.
Overclocking is easy. (Details later.)
Changed this from 300 to 400 GHz.
(*Note red arrow in 2nd pic below.)

One of these fans fits nicely atop the stock heatsink.
Don’t want to overheat that 400 MHz CPU overclock.


*Und Low Pollution!

Et Viola!


However 1st placement would not allow closing of the door.
Metal mounting chassis for CD/DVD & Zip drive in the way.



Moved the fan to the lowest position on the heatsink, now just enough to clear. Just that little bit!


Rotated the fan & added bigger screws.
Think “VOID Warranty if seal is broken”?
Again, explain later when covering the overclock.
(Sticker removed from black jumper block / red asterisk.)


Intech’s CD/DVD SpeedTools 6.0

Spent a few hours testing this and didn’t seem worth the trouble.
The stock B&W CD/DVD drives were always a bit temperamental.
Funny that both Panther & Tiger utilize the very same drive much better.
Is there another Apple CD/DVD driver for OS 9 - other than the v.1.48?

Still think that Intech’s Hard Disk SpeedTools 3.6 is very useful with the B&W / OS 9.

More to follow…
« Last Edit: November 16, 2021, 12:54:07 PM by FBz »

 


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