Recent content by jmacz

Starting a work thread for debugging multiple issues with my Quadra 950. State Upon Receipt I picked this unit up online and it came in a non-working state. The power supply was dead (various issues on both the primary and secondary sides). ATX Power Supply Put together an ATX conversion of...

No. This is only to resolve the artifacts during drags that impact the 8 * 24 GC with Drag Manager.

Created a system extension that resolves screen artifact issues when using Apple's 8 * 24 GC video card with drag and drop on System 7.1 or System 7.5+. Issue was described in this thread: https://68kmla.org/bb/threads/patch-8-24-gc-control-panel-for-compatibility-with-drag-drop.46344/ Will...

Got it working. It's now a system extension of its own. It does not replace the normal drag and drop extension. Both must exist. I have tested it on System 7.1 on a IIfx running the 8 * 24 GC (rev 2). I also tested it on System 7.6.1 and it works there too -- obviously for System 7.6.1, the...

Well duh... there's a better way. I'm going to create a new system extension which wraps the DragDispatch trap to add the enabling/disabling of the acceleration. That should be cleaner as it avoids patching the stock system extension, and hopefully work on System 7.5+ as well.

Wow, been a year.. but finally found some time to disassemble the Macintosh Drag and Drop system extension as well as the 8 * 24 GC control panel. I was able to reproduce the following two artifacts when running the 8 * 24 GC with acceleration enabled while at the same time having the Macintosh...

Spot welding batteries is easy and the welders are fairly cheap on Amazon. The EMM board is finicky tho and prone to failure. The memory chip is replaceable but not the EMM custom chip.

Well, I guess I can get down to 9 if I can fix the 950. Speaking of which, borrowed a stock 950 power supply from @techstep and immediately reproduced the issue so that rules out the power supply. Which means something is wrong on the logic board since the memory, drive, power supply, ROM, have...

This is very close to where I have been landing.. SE/30 IIfx Quadra 700 PowerBook 540c Power Macintosh 8500 and then as I sit there staring at the machines to drop and then the emotional aspect like what @akator70 plus some subtle things start kicking in... and I add back in: SE - the...

Interesting reading all of your thoughts. Lots to chew on.

Haha that’s cool! Do I use it is probably what I ask the most. Effort restoring not so much. I enjoy the restoration so always wanting to add more to fix it and sell it off again. I collect, then get frustrated with how much room it’s all taking, then sell. Then repeat. 😂 Thanks! I keep...

Faster compiles and IDE performance (I find running CodeWarrior on a 1280x1024 display on any of my 040s still exhibits lag in the editor window). Cross compiles are a bit nicer too. So yeah, need at least one PowerPC based machine. I could of course do development on a modern system with...

I have been trying to reduce my collection and sold a few of them recently. But having issues reducing further. For the following 11 machines, if you could only keep 5 of them, which would you let go? Macintosh SE - full memory, has a working miniscribe hard disk Macintosh SE/30 - full memory...

👍 very cool! I spent a lot of time at Cal surrounded by Sun machines.

Not Mac related... but finally cobbled together a fully working Sun Ultra 1 workstation with proper monitor, keyboard, mouse. Joins my NeXTStation Color in my non-Mac collection.