INTRODUCTION...I analyzed how to increase the clock speed of a G3 PowerMacintosh.
If you adjust the set of jumpers labelled "J16" which are near the battery on the G3 logic board, you may configure the Processor clock PLL, BUS-Clock and Grackle (MPC106) timing.
First : Remove the sealed from the jumpers.
Second : Configure the J16 jumpers using the chart belom, much like you would configure the jumpers for a SCSI drive to set the SCSI ID.
The jumpers are "sealed" under a label and if this label is removed no Apple Authorized Service provider will repair that PowerMac G3 even if the problem or issue is non- motherboard related !
This infomation is not confirmation of stability operation.
Please note that any modifications you make to your Macintosh are made at your own risk.UPDATE:
As a result of analysis to grow, I corrected an error (P5) in a method of bus clock up.
And added new configure setting to 70MHz BUS-CLOCK Mode (for G3/275?).
TUNE-UP METHOD...
- S:Set Jumper
- x:Not set Jumper
Please mail to me your experiment result.
Email:t-imai@ppp.bekkoame.or.jp
