Recent content by phipli

The wait states are changed depending on what bus speed is selected to keep in spec for the speed of the parts used on a stock LC 475. I wrote the software to work with 80ns RAM at 40MHz.

I've shared everything I can before.

The 475 and 575 use a chipset derived from the 650 / 800 chipset. They're all technically spec'd up to 40MHz. There are datasheets floating around.

I suspect it isn't what you're thinking, but interestingly @Trash80toG4, only the CPU and PLL aren't rated for 40MHz on the LC 475. I've replaced both of them with 40MHz rated parts on mine, so my 475 is effectively upgraded to a 40MHz machine rather than Overclocked. Memory (RAM, ROM, VRAM) are...

The same version should be available in both places, but I'm more likely to forget to update my website than Macintosh Garden. I would start by putting a 40x40mm self adhesive heatsink (something like these : https://www.aliexpress.com/item/1005004497885109.html or these ...

Surely, you could test RadiusShare to confirm if the card works instead of asking other people to set up specific configurations?

Yes, RocketWare makes it behave as an accelerator, RocketShare is more like a modern Virtual Machine. If adverts say it can boot from a disk on the booster in RocketWare mode then it must be able to, but... I'm surprised. The Mac, by default, wouldn't know about or be able to see the drive...

Hum, also, given the booster is on the Rocket's PDS, I'm not sure how you'd be able to boot the IIci from it? Have you tried it in RocketShare? Does it work there?

You might want to try this : https://macintoshgarden.org/apps/control-strip-475-overclock To get it reliable at 40MHz, you'll want to swap the 0 ohm resistor from R96 to R95. For 40MHz you shouldn't need to do anything else, but if you want to go faster you'll need to swap the chip (swap in the...

Do you have the driver for the booster installed? I feel like I remember it had an extra extension.

Ah right, sure, if it boots to desktop that is a good sign, the card wont do anything without a driver installed. You don't need Mac OS 8. I've run G3 upgrades in System 7.1.2 on my 6100 (although that is being silly, and a later OS would be better, perhaps 7.6.1 or 8.1 if you have enough RAM).

Find attached stuffit archives (hqx'd) of the contents of the two discs CHRP installer tomes.

Often the System Folders on installer CDs are crippled so they don't work from hard disks. Have you tried just installing it, and making sure the system enabler is in there? Perhaps try adding an iMac age appropriate 'Mac OS ROM' to the system folder for open firmware to find. Out of curiosity...

If it isn't booting it isn't because of drivers. Without the driver, a 6100 will just boot from its built in processor. Try cleaning the edge contacts and the PDS slot with contact cleaner spray.

The boards are very similar - The 7100 and 8100 are based on the 6100. The 6100 is close to the prototype for the whole family and late on the team were asked to add a medium and higher end model. At their core, they're all very similar with the main difference being in the memory and nubus...