upgrading the ibook clamshell's L2 cache to 1MB
- Thread starter alectrona6400
- Start date
Try contacting @joevt, he helped me on my iMac G3 to recognize 1MB of cache, and even change the ratio.
https://68kmla.org/bb/threads/imac-g3-dv-cpu-swap-just-a-few-steps-away.51982/
https://68kmla.org/bb/threads/imac-g3-dv-cpu-swap-just-a-few-steps-away.51982/
guess what... 20 worked perfectly and now all the cache is seen in system profiler! thank you so much...
guess what, i am actually typing this on the ibook right now... the modern web doesn't feel so usable but 68kmla forums on its modern layout works alright. also i still need to fix the nvram values for displaying the correct clock and bus speed (400MHz, 100MHz)
maybe some day i should put a 7410 in here..... lol. that is, if i get better at reballing.
maybe some day i should put a 7410 in here..... lol. that is, if i get better at reballing.
got the bus speed set correctly in the config block, now the CPU is being properly recognized at its true speed.
maybe, when i do more practice, and improve upon my skills... i should definitely put a G4 into this computer
maybe, when i do more practice, and improve upon my skills... i should definitely put a G4 into this computer
Did you try to open a file?
Config Block Editor can open files with creator of
cbif and type brom or ROM . These can be a 1MiB firmware dump. You should get a firmware dump before and after modifying so you can compare before and after.It can open individual config blocks with type:creator of
cbif:bbce. These are 128 bytes. Maybe 256 byte? Firmware updaters have config blocks for many models (128 bytes per model - the second 128 bytes is unique to your machine).It can open Firmware Updater scripts with type:creator
TEXT:MPS . The scripts begin with Open Firmware code and contain compressed versions of the firmware and config blocks for each model.I believe Config Block Editor 1.1 is limited to firmware updaters 4.4.8 and earlier. 4.5.5d2 and later changed the format to include separate drivers for different models. Although Config Block Editor 1.1 can't open all the firmware updaters, it can open config blocks extracted from the firmware updaters or config blocks in firmware dumps for all the versions, but I don't know if the parsing of later config block versions is correct.
Config Block Editor can open files of type
APPL, I don't know what this one is.File type kinds:
cbif Config Block image fileTEXT Motorola S-Records Config Block fileAPPL Self-Updating Config Block image fileWhat's a "Motorola S-Records Config Block file"? This is not a Firmware Updater script?
What's a "Self-Updating Config Block image file"
About dialog text:
Code:
Allows editing of the BootROM Config Block on Core99-based machines. To use, simply edit the Config Block values, hit enter to record the change, and then click Update. BootROM image files and Config Block image files can be dropped onto either the application icon or the main window to import their contents.
Engineering:
Bob Bradley
Special Thanks:
Ernie Beernik, Derrick Carty, Chuck Childs, John Hall, Ron Hochsprung,
Nick King, Al Kossow, Mike Larson, Dave Martin, Stuart Russell, Dave Wongi was able to edit the ROM directly using the program, i just had to hold power and command while turning it on until i hear a long beep. i was also able to get everything working as i stated earlier.
Config Block Editor has ROM flashing capability?
yes it edits the ROM directly by only updating the config block itself. its very easy to use.
