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I have a Performa 600 with a DayStar Turbo 040 accelerator. The option to Disable Memory Test is missing in Advanced Features in the QuadControl Control Panel. I have tested the accelerator in a IIci and the did not have that issue. Is this expected behavior in a Performa 600? I have attached a...

Is the PDS slot in a LC III electrically compatible with the PDS slot in a LC 520/550? I am look at getting an accelerator for my LC III and it is listed for a LC 520/LC 550. Thanks!

These are all 2MB 30-Pin SIMMS. I am trying to find out if these are PAL SIMMs and if they would work in a Macintosh II before I make an offer to the seller. The seller said they do work in a IIsi and Color Classic. I think the answer is no, but I just want to make sure. Any help would be...

I did some checking and was able to find a reliable source for purchasing one of these. I did find one other source but it was double the cost. Here is the weblink for a company in the Netherlands. https://www.vandijkenelektronica.nl/product/origineel-motorola-xc68851rc16-mc68851/ You cannot...

I just acquired a Macintosh II. Installing 8x4M 30-pin SIMMs, I get a black screen and a sad mac tone. 8x1MB 30-pin SIMMs work just fine. It does have the FDHD upgrade but, still has the Apple AMMU installed. The ROM version is $0178 according to the info screen in SpeedOMeter. So is this a ROM...

I just picked up a MacEffects Thunder PDS accelerator. With the accelerator installed the audio is distorted. Has anyone else had this problem with an LC II and a accelerator installed? If so, any known workarounds?

I have a genuine Mac edition Radeon 9200 128MB PCI video card that I cannot get to work in this computer. I have tried all 3 PCI slots. Every set of drivers both official and patched that I have tried have the same issue. The mouse cursor moves around, but I cannot click on any menus or icons on...

I recently picked up a Macintosh Display Card 8*24 GC NuBus video card. The one thing I immediately noticed is how hot the Am29000 CPU got. I was looking for an inexpensive passive cooling solution and this is what I came up with. I found this 4 pack of aluminum coolers for $10.99 on Amazon. I...

The best deal on eBay were these two, but those are listed for an Amiga. Does anyone know if these would work? One is parity the other is non-parity. The other question is could they be used together on the video card? https://www.ebay.com/itm/334471305723 https://www.ebay.com/itm/334471303537

I just got an Interware VDR-2a PDS video card with BIOS version 1.00 for my SE/30. I know there is at least 1.04 version for this card. Does anyone have a BIOS dump with a newer version available?

I have a Daystar Turbo 040 33MHz accelerator that is currently not work. When putting into any one of three IIci computers I have, I just get a black screen and nothing else. I have tried swapping out the CPU for a known working one and it has not made any difference. Visual inspection shows no...

I recently installed a Diimo 030 50MHz accelerator in my Mac SE/30 and also upgraded to 128MB 60ns memory. The SE/30 requires 120ns memory running at stock 16MHz frequency. My questions is does the lower latency of 60ns have any benefit when using such an accelerator or is the memory access the...

I got a Mac IIci that has been recapped and it has a ROM-Inator II installed. The issue I am having is that when trying to boot System 7.1x or 7.5.x it freezes very shortly in to booting process. I have tried booting with Extensions off and that has not helped. . I have tried all versions of...

I found this link online and just thought I would pass it along. I have no idea if it's legit or not. https://www.canpharm.top/product/Radius-Rocket-Stage-Ii-Nubus-68040-40mhz-Accelerator-Ethernet-Card_ogqy21yyz410zzz.html

It was 30 years ago I got my first Mac II series computer. It was a IIsi as I could not afford a IIci at the time. Now after all these years I wanted to put together an ultimate Mac IIci. I think, at least for myself, I have done just that. Here are the specs: 128MB 60ns memory Big Mess Of...

I have a Mac IIci that I pulled a NuBus video card from running System 7.1 and now most programs are appearing off screen. I have tried resetting the PRAM, but that has not done any good. Any ideas on how to reset the video settings back to using the onboard video for everything?

I just got a SuperMac Spectrum/8*24 PDQ NuBus video card. The ROM version is 1.39. I have it installed in my Mac IIci running System 7.1 w/Update 3.0. I am using the SuperVideo 2.75 Control Panel. Video acceleration is enabled but the card benches much lower than the speed of the onboard Mac...

I just picked up a Stratos TwinSpark adapter for use in my SE/30. I have a DayStar PowerCache P33 50MHz accelerator. It works fine in my Mac IIci. When installing it in the SE/30 with the Stratos TwinSpark adapter, the 32K cache will not enable. I am using version 2.2 of the PowerCentral...

I just picked a G3 CPU for my Beige Power Macintosh G3. I believe this is a 333MHz CPU as indicated by the 333W portion of the number on sticker in the 2nd picture, but I would like to very that. The CPU was advertised as 300MHz. I currently have it the Beige G3 Power Macintosh jumpered for...

Can someone suggest a simple blank screen saver other than After Dark for System 6.0.8 on a Mac SE? I just want to dim the screen to prevent burn in and I want to use as little memory as possible. I am currently using Moire 4.01, but that does not have a simple blank screen module. Thanks!