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I've finally answered part of the mystery about how earlier Rockets worked (and I'll have to update my article). To my surprise, before RocketShare 1.0 and RocketWare 1.5, they didn't load a ROM at all! Despite the sophistication of the Rocket allowing for it to boot (mostly) independently with...

It seems the problem goes back to 1989 even, see this documentation from Central Point for their Option Board: http://ftp.oldskool.org/pub/OptionBoard/(1989)%20Deluxe%20Option%20Board%20v5.4/Package%20Contents/Documentation/OB_Drive_Note.pdf My working drive lives in my period correct Pentium...

Greaseweazel: https://github.com/keirf/greaseweazle/discussions/438#discussioncomment-9560648 HxC: https://torlus.com/floppy/forum/viewtopic.php?p=25793#p25793 This drive is from maybe 2000-2003. I just tried a 1993/1994 drive and it reads properly. Curiously, on the 2000-2003 drive I can...

I've been using my Greaseweazel to read 720k and 1.44mb IBM floppies and Amiga 880k floppies successfully, but 800k Mac floppies seem to be failing. Obviously they're GCR which normally causes problems, but if I understand the docs correctly, the flux image is read at sufficient rate you can...

Today I discovered the DiiMO SpeedDoubler software also supports this functionality: https://web.archive.org/web/20061019184950/https://www.micromac.com/software/sd040.sit.hqx Unclear if this works without the card, I tried it in emulation and it crashes the OS after enabling. I'd recommend...

I discovered something interesting while I was looking at the software for the Magellan 040 from this post: https://68kmla.org/bb/index.php?threads/na-2021-ebay-finds-thread.37524/page-179#post-556420 A fair amount of older software was incompatible with the 040's caches. Traditionally this was...

02E31F; the E masks all have the smaller geometry, which usually runs cooler, all other things being equal. That'll probably run fine at 40, then. But you'll want to let it run for awhile to see if it overheats or if you need active cooling, if you want to keep it at 40 long term.

Probably worth seeing if the signal is strong enough for a CF extension cable to work. One of those could route it to the back panel.

It still might be a D mask. The code is on the chip under the heatsink. At any rate, the E masks will generally run fine at 40 if you’ve got the chunky heatsink on. The 25 rated D masks can get quite hot and may crash, even if they boot.

What mask is the chip? https://eharmon.net/retro/macintosh/motorola-processors/#68040rc

Looking more closely at your pictures, I think you’re right.

Corrosion can cause metal expansion and the solder mask flakes off. It'll also cause broken traces, but generally not shorted traces. Based on the image, measuring between 1, 2, and 4 should all show continuity at 0 Ohms. Between 2 and 3 should show resistance matching the resistor's rating...

That's perfect, thanks! That matches what I measured but I like to double check before I blow up a drive with 12v :D.

It seems my Quadra 700 is missing it's 4-pin cable for HD power. Does anyone know the pinout? From a picture online I think it's (numbered from bottom left viewed from the cable end): 1 - 12v 2 - Ground 3 - Ground 4 - 5v Which helpfully mirrors the pinout of the other end. Can anyone confirm...

I've got to be the master of monologues on this forum...anyway, ran a benchmark today and it might be the slightest bit faster. This machine only has Speedometer right now but maybe I'll get around to Norton at some point. "This Machine" is the 3.0 driver. Rest of the scores below this were...

There's also kits to replace standard modem guts with the same (no endorsement here and I haven't tried this one, but it's a clean example): https://www.tindie.com/products/retromodem/wifi-retromodem-for-hayes-smartmodem/ I think both those types of products do what you're suggesting. They...

I forgot to mention, the Universal version claims to support: Total Systems Mercury Total Systems Gemini 020\030 Total Systems Gemini Total Systems Gemini Classic Total Systems Ultra Total Systems Integra Total Systems Mercury Classic Extreme Systems Microspeed Mobius 030 Mobius Classic 030...

I tried this out on my SE with a 40MHz Gemini Ultra today, using System 7.1.1. Seems to work fine at a basic level, and the installer does all the setup including removal of older versions, which is nice. Better than the manual setup for 3.0. Nothing obviously works better, though, which makes...

Oh interesting. I should add detection for that flag.

Does the ROM code have a built in wait loop for ROM access? The Quadras do to try to time ROM access to the respective bus speed. It's one of the things you can overclock with a custom ROM by removing wait states. 7.5 definitely patches a significant amount of the ROM code for older devices, so...