Recent content by lobust

What about SAT - Sprite Animation Toolkit by Ingemar Ragnemalm? https://devnonsense.com/posts/sprite-animation-toolkit/ Used in lots of 2d shareware games in the '90's. It was my first foray into C programming as a teenager - after spending a week or two of late nights downloading a pirate...

They would be a fantastic addition, but on the about page it states that since its move to the Computer History Museum, Folklore.org is read only and all interactive elements have been removed, including the ability to add new articles, which is very sad. https://folklore.org/html/about.html

A ten minute job for someone with a lathe if you wanted a like for like replacement. Similarly quick with a 3d printer. I'd replace it either way, there is potential for the spring pressure to warp the board over time and possibly cause bad connections in the connector...

For clarification, OP was trying to connect to another mac and not a printer:

Unlikely IMO. I have a pretty good amount of experience with serial hardware, but not with macintosh serial hardware, so if I say anything wrong or irrelevant hopefully somebody else will correct me. What I do know is that the 26LS30 is a RS-422 line driver and apple apparently used it is a...

That's a 26LS30 not a 32. It's the line driver for the serial ports. Did you have anything plugged into the modem or printer ports when it happened?

Yes, I forgot about the av machines, but the point stands IMHO - by the time of 7.6 all the Quadras were firmly in apple's rear view mirror... I honestly think apple had the right strategy with wombat - fast 16bit at reasonable resolutions was good enough for everyone who wasn't doing graphics...

I think my 700 does this too in 8.1 but it's been years since I played with it. It's possible that this is just a bug/slight incompatibility. If you think contemporarily, there wouldn't have been many people actually using the onboard video at 24bit - it's slow on the 700 and anyone who truly...

Yes, if you have all the pieces then it can be repaired. You need (I strongly recommend this specifically, not something similar or equivalent): https://www.modelscenerysupplies.co.uk/ema-plastic-weld-cement-plasweld#:~:text=Description,Plasticard%2010/000%200.25mm and something like this, or...

An interesting data point - unfortunately I didn't document much of it - I did exactly what you've done here a couple of years ago with a SCSI2SD v6. What stands out to me is that I got the same results as you through the SEIV, but my native reads were significantly slower than yours at ~2800 I...

That's good! I wonder if you have a flashed PC video card of some description in there? Some of those don't work properly in framebuffer mode during boot...

It's certainly possible, but I don't think I would jump to that conclusion if the early boot is failing... If the video error is present on the OF prompt or the startup manager screen then it would certainly indicate a gpu fault... Idk if verbose or single user would work, I think this screen...

That error simply means that the system software is not bootable, generally because the installed system is for different hardware. Nothing to do with the graphics card.

What happens is that any deviation from perfect roundess of the commutator causes the brushes to bounce, which in turn causes them to arc. That's why this job is typically done on a lathe.

As someone who has worked quite a lot with industrial brushed motors, I feel obliged to say that this method of cleaning the commutator is likely to dramatically shorten the life of the brushes, and is liable to be quite a short-lived repair of the commutator itself. I don't mean to rain on...