Search results

Its always nice to work on a drive from a machine without a fan. My external drive looked new inside!

Yes.... I didn't say it wasn't do-able. It is just mylar is brittle and if one does fail it would be tricky to get a replacement Mylar washer with an interference fit to post on a 35 year old floppy drive... given that not removing the still results in a perfectly serviceable drive, I just don't...

Do you have a photo?

The LC III came fitted with two different floppy drives, the manual inject and auto inject. They changed the case between them. If your LC III has a smooth face it has the later manual inject, if it has a single groove across the front it has the older manual inject. Both drives are a 1.44MB...

The plastic tool is a special type of screwdriver for trimpots. I don't live in the US, so can't make recommendations. You could carve something out of a chopstick to be honest. Not sure if that is bad advice. There are... but what I'd say is they tend to be too... complete. They completely...

You're misreading me there 😆 Classic British double negative, sorry, I know it is a bad habit. I meant "It is a good first Mac", but wrote it in a confusing way.

We can't tell you that the problem is anything in particular for certain. All we can say is Pluses are usually repairable but you will need to get your hands dirty.

If it is the ROM, it wont be only the ROM, the line pattern means the tube is been sent too higher voltage I believe. If you're lucky, it is just someone has been messing with the controls, but it could mean some work on the analogue board is needed. This isn't too bad for a first mac project...

Think supports inline assembly doesn't it? Could an analysis of where time is spent in the main loop be done to see if there is a single routine that could be optimised to make a big speed improvement? This is absolutely awesome by the way, I should have probably started with that, rather than...

If I remember, the datasheet for the... AMD clones?? gives more details regarding the programming algorithm doesn't it? I'd have to go back and look. How bad would it be to make a cheap modern one? What are the programming voltages? Nothing that couldn't be overcome with a MOSFET and a 12 or 24V...

... through resistors, taking care to verify voltages, because they're not always 5V on all signals etc. etc. etc. On an unknown card, you really want to be checking the signals with a scope if possible (they're slow enough any old cheap scope / mini DSO thing will do). Just in case anyone is...

There isn't a single answer for all cards, it entirely depends on the card. Pinouts for Mac DB9 cards are not well documented. Your best option is searching forums for specific cards, or reverse engineering it yourself. You can't rely on looking up similar pinouts for PC cards because the...

The main thing is they are much less likely to leak.

Not the xceed no, the chips aren't available. Bolle was working on a different grey scale card that bumped the screen to 512*384. But I think it is still under development.

The other day you had strips - that means loads of stuff was working :) To show stripes, the video circuit has to work, as well as lots of chips. But the processor probably wasn't running code from ROM to fill the VRAM with the right stuff.

Yeah, I don't use acetone on PCBs in case there are any susceptible plastics on there. I own a tub of acetone, but I mostly use it for plastic welding ABS and degreasing metal!

I wrote an Arduino program for verifying the PROMs if needed. Lets you check them independently of the programmer.

Slightly depending on type, most of the time a little bit of flux shouldn't matter. Some parts of a circuit can be sensitive to contamination, but it isn't common. Only thing I can think of is the sound circuit in LCs and similar is hyper sensitive. I wouldn't call a bit of flux a screw up...

I find the only thing I use from the Control Strip is bit depth and resolution changing, so sometimes I just use something like the RadiusWare software to give a control+click (I think?) contextual menu for changing monitor settings. Volume is the only other thing, but I'm not too bothered...

Wait, you mean there is a situation in which you wouldn't delete QuickDraw GX? I always delete it (and claim back the huge amount of RAM it consumes) and have never once seen an error saying I need it.