Search results

Looking through my mouser history it seems I have ordered 38-HX5F12.5-32.768KHz before and they again seem to be fine as drop in replacements.

I have used these before as drop in replacements: ABLS-16.9344MHZ-B4-T The load capacitance doesn't match the original either but it has always worked fine for me so far (on both original logicboards that needed the crystal replaced because it got eaten by cap fluid, or when building SE/30 and...

On a reloaded board you can just go for ISSI IS61C256AL in SOJ-28 which is still in production. I made the pads for the SRAM large enough to take both, SOJ and the original wide SO footprint.

Still depends on the machine and upgrade type, they're not all the same. On the one shown above it's obvious as the original CPU comes out for the upgrade to drop in. Some machines that use adapters that go into the CPU socket and present a IIci style slot for an accelerator move the logicboard...

Ha, alright. I wondered if the word on the JLC blooper already was spread or not because I didn't find anything in one of the group buy threads yet. Good to know everyone is informed already(y) I'm still kind of curious if it's all boards that they messed up.

Check if you've got BAS40-04 instead of BAS40-06 diodes installed on the bottom of the board for D4 to D19.

Those stripes are the default contents of the VRAM. (depending on the vendor of the VRAM the default contents can also be thick horizontal stripes - yours are the thin variant - or gray background with vertical lines of garbage that are 1 pixel in width) What that means is that the board didn't...

This. Those clock doublers for 030 machines massage /DSACK, /STERM and /CBACK to get things working. You'll also need software patches to get sound and floppy working again because those rely on specific timing variables. Can't speak for the Sonnet upgrade, but on the clock Doubler made by Dove...

This way around isn't as fatal as putting IIci cards into an SE/30 slot though. While both directions will totally not work at all a IIci card in an SE/30 slot will be damaged because the SE/30 slot has 12V present in places where only 5 logic level signals should go. Putting an SE/30 card into...

To be honest... I went for that license because everyone else seems to use it as well. I don't have the time and I don't want to deal with any of that licensing stuff at all. There's already someone on eBay in Germany commercially selling unpopulated boards (they do have a lot of other boards...

+1 on applying new thermal paste. Also check if the Peltier is actually good. Also there's a fan attached to the back of the power supply assembly so it sits right on top of the CPU heatsink once the board is installed in the machine. Make sure that fan is running.

Depending on your programmer that's normal behavior for PALs. On most of them there's no signature or anything to read for the programmer to identify the chip. Even worse programming algorithms vastly differ between manufacturers and even different PAL revisions from the same manufacturer...

Correct. The data lines on the PLCC32 sockets on my logicboard are reversed because otherwise routing them in the tight available space would have been really messy. Turning the sockets around would have caused issues with the address line routing, so simply inverting the bit order for each...

You'll need separate surface mount machined pins like those: https://www.mill-max.com/products/new/tape-reel-packaged-smt-pin

Yep... This coupled with that thing:

I think a 50MHz PowerCache will be faster due to the cache that most of the other fast SE accelerators lack. The PowerCache adapter for the SE also comes with RAM which is hanging on to a fast 33MHz bus on the adapter itself. I think the PowerCache when used in an SE benchmarks faster than when...

At least that's what it says there. I do have both, the Quik30 as well as the Gemini Ultra (branded Extreme Systems) and they both do have sound issues when used with Gemstart - it's just not as bad as with other drivers but it's still there. What's interesting is that with less crackles and...

You can also use this: https://macintoshgarden.org/apps/total-systems-enterprise-030-driver That's what came on the hard drive of an LC I got with that accelerator in it.

That's a simple PDS angle adapter for the IIsi, so you can use fullsize PDS cards in it. I'd issue a guess that the giant SIMM socket was there for a proprietary cache card.

Getting there... already started ordering PCBs for playtime in the upcoming winter season.