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mark-r commented on Epson MX-80 Fonts   mw.rat.bz/MX-80/... · Posted by u/m_walden
wiredfool · 6 days ago
My recollection is that the dots were round on my dot matrix. But it also used a typewriter ribbon, so there was a bit of texture from that.
mark-r · 5 days ago
Good point, the dots were produced by pins that were round. What I meant to say was that the spacing might have been different in the two directions.
mark-r commented on An interactive guide to SVG paths   joshwcomeau.com/svg/inter... · Posted by u/joshwcomeau
mark-r · 5 days ago
The aside about whitespace and punctuation was interesting. Is there an SVG tidy program out there that will make your files more readable?
mark-r commented on Weaponizing image scaling against production AI systems   blog.trailofbits.com/2025... · Posted by u/tatersolid
mark-r · 5 days ago
A good scaling algorithm would take Nyquist limits into account. For example if you're using bicubic to resize to 1/3 the original size, you wouldn't use a 4x4 grid but a 12x12 grid. The formula for calculating the weights is easily stretched out. Oh and don't forget to de-gamma your image first. It's too bad that good scaling is so rare.
mark-r commented on Epson MX-80 Fonts   mw.rat.bz/MX-80/... · Posted by u/m_walden
Theodores · 6 days ago
It was a 1 x 9 print head and you could get 132 characters per line as well as the normal 80, plus variants such as 40 and 66 characters per line, where things must have been doubled up with the motor running at the same pitch, hence the 12x9 you refer to.

I only became familiar with the later FX-80, which was the same but different. I managed to get logos printed along with neat boxes around information from the extra characters it had in PCL.

I am sure NLQ was a selling point of the FX-80 but I would like to see how good it was on the MX-80. At the time printers from Epson, HP and Canon were miracles of engineering, more advanced than the computers they were connected to.

mark-r · 6 days ago
I got the Graftrax option for my MX-80 so it could do arbitrary graphics without having to mess around with special characters.
mark-r commented on Epson MX-80 Fonts   mw.rat.bz/MX-80/... · Posted by u/m_walden
wiredfool · 6 days ago
The font on the page is definitely too wide -- it should be taller than wide, and 10 characters per inch.
mark-r · 6 days ago
I'm not sure the original MX-80 had square dots. Since they made this to be pixel accurate, the aspect ratio might be off because the MX-80 was off.

The key test is not how it looks on screen, but how it looks printed.

mark-r commented on Epson MX-80 Fonts   mw.rat.bz/MX-80/... · Posted by u/m_walden
whyenot · 6 days ago
In the late 1970s, my dad purchased an S-100 bus computer from Thinker Toys for about $3,000 (would be close to $15,000 today after adjusting for inflation). It had a Z80 microprocessor and ran CP/M. As was true of many hobbyist computers from this era, it came with full source code (in beautifully documented assembly) both for CP/M and for the BIOS. This was important because if you wanted to add peripherals or make other modifications to your computer, you had to edit the source code and recompile the BIOS.

A few years later my dad decided to buy an Epson MX-80 for his computer. The daisy-wheel and the plotter at work (he worked at SRI) just didn't cut it, I guess? This required buying a serial card for the S-100. In order to get that printer to work, he had to first, wire up a cable because the data lines from the card were on different pins in the printer. I believe there was a version of the MX-80 that came with a serial port instead of a parallel port which made some things easier. I was recruited as his assistant. Then he had to modify and recompile the BIOS. Then he had to also make some changes to CP/M. This was a process of trial and error that lasted for weeks. I remember I was away at summer camp and he sent me a letter he printed out on that printer. He was so happy that he finally got it to work.

Anyways, this resurfaced that memory and I thought I might as well share it. I still have the printout he sent me somewhere.

mark-r · 6 days ago
If I remember correctly the serial port was an add-in card. Mine used the parallel connection.
mark-r commented on It's the Housing, Stupid   ofdollarsanddata.com/its-... · Posted by u/throw0101c
jandrese · 9 days ago
2br 1bath doesn’t make sense in single family homes. That’s a condo/apartment size residence. Maybe townhome if you live in a low density area.

Condos should be a lot more popular, especially for the young and old, but the fees are pretty much always ridiculous. The whole point is to spread out the maintence costs among many residents so they are trivial, instead condo fees are usually in the hundreds or thousands per month per unit for no apparent reason other than the landlord wants a big payday. It doesn’t cost millions per year to maintain some parking spots, a small unstaffed pool, a front desk, and building maintenance. It’s like paying rent on top of your mortgage.

mark-r · 9 days ago
The thing is, that used to be enough. People's standards have changed, and the house I described is no worse than most apartments.

Personally I think I'd rather rent than get a condo.

mark-r commented on It's the Housing, Stupid   ofdollarsanddata.com/its-... · Posted by u/throw0101c
mark-r · 9 days ago
My wife and I were remarking on this just yesterday. We were driving through a neighborhood of small starter homes, and noting that nobody builds anything like that anymore. A two bedroom one bathroom house is all anybody needs to start out and get into the homeownership game, but the only way to get one is from the constrained supply of old ones.
mark-r commented on Microsoft keeps adding stuff into Windows we don't need   theregister.com/2025/08/1... · Posted by u/rntn
partomniscient · 11 days ago
I'm also in agreement that server-side, Windows 2000 server was peak.

XP/Window 7 were peak end-user OS's, once you got over the Fisher-Price look of XP.

The constraints you had in terms of user-UI were a massive advantage in terms of user-understanding. Now we're in a stupid era of the browser is the UI and everything is non-conformant with everything else in terms of looks/expectation/behaviour.

The version of MS-Office prior to the stupid ribbon-shit were also the peak versions. It's all been downhill since then with Windows ME and Windows 8 being exceptionally low points.

I'm about to shift to FreeBSD as my main driver as the Linux distribution fragmentation and wane in reliability/dependability and repeatability has given me the shits (how many apt-get equivalents are there now...?) I used to like Debian back in the day but now it and its derivatives (e.g. Ubuntu) give me the shits and Red-Hat and Fedora likewise, and Debian itself won't even install a working desktop. Apparently raising a bug for Fedora gets put into "Closed - not a bug" because IBM don't give a shit about quality anymore - even though the install resulted in an unbootable OS and I spent hours raising a proper bug report. Pop-OS was reasonable, but scaling where some apps have both big and little font sizes intermixed still mean its a clusterfuck of a kludge.

It's 2025 and apparently trying to mount network shares in fstab before the network interface is up isn't a bug. It's still not year of the desktop for Linux.

FWIW, I liked Apple in the 1980's - not so much since then.

I still appreciate all the contributions of those individuals out there is both GNU/Linux and the BSD'd trying to make the world a better place for themselves/others and sharing the results.

mark-r · 11 days ago
I have a Windows 7 PC that I decided to upgrade when the motherboard was about 10 years old. Expected it to just boot right up, motherboards haven't changed all that much. It would get to the part of the boot sequence where the window was coalescing on screen, and crash. A message flew by too quickly to see much less read, then totally black and unresponsive.

At that point I had a choice. I could buy a new version of Windows 11 for $200 which is much worse than the Windows 7 I gave up. Or I could switch to Linux. Hello Linux! There's one application I miss dearly that was Windows-only, but overall I'm a happy camper now.

mark-r commented on Time travel is self-suppressing   arxiv.org/abs/2508.09157... · Posted by u/warrenm
idle_zealot · 12 days ago
> Most time travel theories ignore the fact that the earth is not fixed in space

This is a misconception that bugs me. The problem isn't that the Earth isn't fixed in space, it's that there's no such thing as a fixed point in space. Position is only defined relative to other objects. If you're going to use time travel in a story or something then it has to use something like an anchor object to determine destination. I.e. the relative location of the traveler and the anchor is replicated from the future to the past.

mark-r · 12 days ago
Even if you could magically arrive at the right point, how would you get the right momentum? If the Earth were standing completely still, it would still be spinning at a horrendous speed.

u/mark-r

KarmaCake day5872September 5, 2008View Original