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Internal SCSI on a Mac Plus has more than one meaning. Manufacturers produced alternative SCSI interfaces (ROM or CPU clip-on boards) which were better than the built-in. Some were used in conjunction with internal hard disk drives. How much power? If you have refurbished the PSU and fit a low...

That is a nice find. It may work better with a maxed out IIgs than a Mac.

The silk screen labelling on the card makes no sense. Why put a 68020 processor with FPU into an LCII?

The date on that card is 1990. It may not work in anything later than a Mac II (or IIx, IIcx etc) or with later Color QuickDraw implementations. I have a similar card (model UC504122) which failed to work for me in a IIci. I put it on one side because I have a choice of alternatives. My card...

Are you sure that you wish to leave a Mac 128K (or even a Plus) running unattended such that you need to use a screensaver? I have seen compact Macs with serious screen burn -- Macs used in educational computer labs which had been left on for weeks -- but none of my survivors suffer from it. If...

I'll second the recommendation for MEK or similar solvent welds. If you don't have a syringe, it can be applied by dipping the eye of a sewing needle into the solvent. Other glues will not prevent the crack from lengthening -- slowly, but it will happen. A crack may be stopped by drilling a...

Over a 20 year period, I was called in to sort out Macs for Alec Jeffreys, the inventor of genetic fingerprinting. When we first met, Alec was using a Quadra 700 which needed to be hooked up to university file servers plus a few patches to get MS Basic(!) working again. The Quadra was overkill...

See the link below for info about the strange Q950 SCSI bus: http://support.apple.com/kb/TA27979?viewlocale=en_US

The error message is Bereichsfehler 5, a memory addressing problem. It's a pretty useless error report because it can mean almost anything. The computer can boot System 7.5 (which requires more than 2MB RAM) without tripping up and becks has tried different RAM combinations. --- I think becks...

Use a serial number decoder and work out which SE is oldest. At least six months older than the first SE/30.

Apple changed the design before the SE/30 was released. If you knew that you were going to sell an upgrade that wouldn't fit, wouldn't you try to get the change into the production process as quickly as possible? Uniserver's photos show a pre-FDHD SE which had a brief overlap with the SE/30.

So what happens when you boot with Extensions disabled?

This is important to power an electric kettle to make tea. True here in the UK. A former work colleague, in his youth, acquired a drum memory unit that required three phase. He got it running by taking one phase from different floors in the halls of residence where he lived. --- On the...

You have mixed SIMMs in one bank. And two chip/three chip SIMMs are known to be problematic on anything older than an LC. Have you tested using the bank of eight chip SIMMs?

Thanks Mcdermd for that photo. I like the line below computer description: "Domestic". I believe that the first Mac to ship with a built-in (perhaps optional) CD-ROM drive was the the IIvi/IIvx after October 1992.

That description makes sense from a design perspective. Apple needed a new compact graphics system for the 68030 to work with Color QuickDraw and NuBus Slot Manager. The graphics system had to have just enough functionality to allow applications written for Color QuickDraw to run badly. (The...

Special orders with/wo CD-ROM drives were available for education etc, but they tended to be for low end models. See also variants such as the twin floppy drive LC. It's a mystery but you should be able to tell from scratch marks and cabling whether a CD-ROM drive was ever fitted.

I agree more or less with Trash. Conservative buyers could get an SE and plug in a 17"+ monochrome monitor. The graphics card provided tear off menus, so the DTP operator could assemble a palette of tools on the SE built-in display with the work on the big monitor. The advantage of using a big...

It is similar size to an IBM PC XT or AT unit. What made it look really huge was perching the 13"/14" AppleColor High-Resolution RGB Monitor on top.

System 7.1 is more than a bug fix. It implements WorldScript to support non-Roman Languages etc. Most of the changes are below the surface. I'm not sure what functionality is missing for iCab. I'd have a look at adding AppleScript 1.1, Object Support Lib 1.2 and CFM-68K. [Edited for punctuation]