Recent content by phipli

Hum, I think you're getting muddled there - the LC 475 is very different to the LC III. The LC and LC II were very similar to each other, but the LC 475 has more in common with the Quadra 610, 650 and 800. Even then the chipset isn't that similar... just related. The LC III has much lower (what...

This is an LC 475 with a 128MB module fitted : The memory test takes almost exactly 1 minute with this much RAM.

No hardware fix needed - these just work up to 128MB with compatible RAM. Yes... but not more than a minute for 68MB. Something isn't right. Does it chime? Is it the normal chime? So Macs will generally work with Parity RAM, but it doesn't "Use" it - it ignores the parity and just uses it as...

I believe so, based on the datasheet. Looks like it is a 64MB SIMM. The LC 475 can take up to a 128MB SIMM, FPM. It should work with that SIMM, although I don't think the lid will fit on the case (I'm pretty sure - so take care).

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).