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I've been working on recreating the IIfx logicboard on and off for quite a while. Checking the date of creation of the schematics file it reaches back to September '21. I started by working my way through the BOMARC schematics and transcribing them into Eagle. Everyone who ever just looked at...

I think it's time for a little "worklog" kind of thread about this... For the past year I've been working on and off with @cheesestraws and @GeekDot to dissect this SE/30 PDS videocard: It's made by Formac and was bundled with one of their ProNitron monitors back then driving it at 1024*768...

I recently finished testing on the final (so far) working revision of the SE/30 board. Below is my initial post from before the site crash on how everything started: All things on the "left to do" list had been worked out before the site crash. Just recently I found the time to finally order a...

@demik sent me this card to take a look at why it's not working: It does not show up in TattleTech/SlotInfo... turns out the ROM is bad giving mostly garbage when dumped. So a "simple" request to get this card back to life: Anyone has a card like that and can get me a dump of the ROM?

Some time ago already I had the chance to get my hands on a Radius-made Nubus adapter for the IIsi. (thanks again to @maceffects) We discovered that this one actually works in the SE/30 so we reverse engineered it. The only technical drawback using this design is that Nubus cards will run at...

The topic of cloning the cache card for the Carrera040 came up in another thread so I would like to gather some information here to push this forward. First off: can someone tell me what kind of connector they used and if I can get one (or an equivalent) somewhere? We're looking for...

I figured that it might be worth sharing this to maybe spark somebodies interest in getting the GAL logic dumbed down into something more modern to drastically reduce the size of this thing to free space for additional PDS cards. So far I happen to have figured out the schematics: And I also...

Just was going to share I got a clone of the IIsi & SE/30 MacCon to work. I added a few special SE/30 features... A IIci cache slot accelerator can drop right in and there's the obligatory PDS passthrough on top of the card. The DB15 connector on the breakout board is no AUI port but...

In case someone wants to build themselves a 32MHz 68030 accelerator including 32K cache and optional FPU. This design is the same used by Micromac (ThunderCache), Extreme Systems (Impact), Total Systems (Enterprise) and probably some more (Formac had comparable accelerators as well I think) We...

This is my first Sony PSU that is actually giving me problems even after a recap... Voltages were pretty low to begin with but still in the workable range. I got some pretty nasty screen wobble whenever the disk was accessed or something else taxed the 12V or 5V line. I started by replacing...

Just got my CC out to test a logicboard someone send me for a recap. Popped in the logicboard, everything was fine, popped my LC575 board back in and booted up the machine again because why not if it's already sitting on my desk. Everything was fine as well until I picked another system folder...

I have a IIsi here and the internal speaker only gives very distorted sound output. The speaker itself is fine, already tried a known good speaker as well and it is giving the same distorted sound. Board is clean and recapped. External sound output is working fine without distortion. Found...

As there was some interest in that trading post thread over here I thought we might gather some information on the Mac II and the Daystar adapter here. One difference this adapter has compared to all other Daystar adapters is that it (besides going into the CPU socket) plugs into the MMU socket...

I snatched up one of the faster Sonnet G4 upgrades for old world PCI machines recently. It was the 700MHz/1MB model. They made that same card in 800/1 and 1000/2 configuration as well. Only a few of the 1GHz one were ever made when Sonnet was selling off the remaining cards and Motorola...

I dug out a Radius PrecisionColor 24XP from my pile of Nubus cards which I knew had some kind of problem. Just for reference, we are talking about this card: It is supposed to have ROM version 1.3.2. My IIci gives the chimes of death once the card is installed. The Q950 boots up normally but...

I thought I should share this as a motivation for others :p Got this spare board off eBay for 5€ mainly for sourcing parts. It started like that: I went ahead and got all the gunk off and removed everything that got in the way while cleaning: The CPU was toast, RTC and its two diodes...

I was preparing a few Macs which I was going to sell today and stumbled across this SE with missing ROMs. While looking for for replacements I only found 32pin 27s EPROMs in the spare parts box and those need some adaptation to work in the SE. I thought if I am going to do some adapter magic...

Figured it might be time for one like these for me as well. The start is going to be made by a SE I just picked up from the post office: It was advertised as an SE/30 by the seller and the pictures in the auction showed it indeed had a SE/30 sticker on the back. Also notice the network card...

So SE/30 OCD kicked in again... I saw this SE/30 on eBay. The seller only had posted a few pictures of the outside. It looked pretty clean. What catched my interest was the DB15 port on the back. The grainy structure of the metal bezel holding the DB15 connector screamed MICRON so I decided I...

I got myself one of those ROM SIMMs that take four PLCC32 chips to put into my SE/30 mainly to make it 32bit clean by flashing on a IIsi ROM. I put in four 4mbit chips and flashed on bbrauns 2MB pre-modified IIsi ROM+boot image. Flashing took place in an external programmer by programming each...