Alice Averlong🏳️⚧️the best time to do win32 development is when microsoft's entire cloud has shit the bed
gotta pull out my visual studio 6 MSDN CD because the online stuff keeps timing out
and lets see if the internet archive has WinObj, because sysinternals is not responding
I'm just trying to read sectors off a floppy drive that's not mounted because it doesn't have a FAT12 filesystem!
surely this is an everyday occurrence in windows 11, why is this so hard?
ah-ha!
r"\\.\GLOBALROOT\Device\Floppy0"
I'm benchmarking how long it takes to read a floppy disk, for my video player. test one is calling read(512) 2880 times
305 seconds, that's five minutes.
My video is 252s/floppy, so that's sub-realtime. NOT GOOD
My video is 252s/floppy, so that's sub-realtime. NOT GOOD
½kb: 305s
1kb: 161s
2kb: 89s
4kb: 58s
8kb: 42s
16kb: 34s
32kb: 30s
64kb: 28s
128kb: 28s
256kb: 28s
512kb: 28s
1024kb: 28s
1440kb: 28s
1kb: 161s
2kb: 89s
4kb: 58s
8kb: 42s
16kb: 34s
32kb: 30s
64kb: 28s
128kb: 28s
256kb: 28s
512kb: 28s
1024kb: 28s
1440kb: 28s
That's speeds on a Teac FD-05PUW
a reasonable thing to do would be to adjust my video bitrate so that it stores something like 45-60s instead of 252s, since I can read one disk every 28s.
this'd get me MAXIMUM VIDEO QUALITY at the expense of increasing the video size from 12 floppies to 51-68
Greaseweazle + TEAC FD-235HF:
default settings: 97s
--revs 1: 66s
that makes sense. The USB Teac is a 2X drive, so it's running the disk at 600 RPM instead of the intended 300 RPM, and it gets roughly twice the speed.
there are 4x drives, but they're rare and I think they've mainly been used inside mavicas
I've got one but I'm not gonna build a video player that runs off a camera, that's just silly.
but it's good to know I have plenty of headroom on this 2x drive. even if the user takes a full minute to find and insert the next floppy disk, I can load it fast enough to keep the video going
next step would obviously be to measure how long it takes me to swap through 12 floppy disks
if I could instantly load the next floppy disk that'd be 336s to read all 12. obviously it's going to be more than that, but how much more?
maybe I'll run two tests: one with the disks sorted, and one with them shuffled.
I should mod a card shuffler to work on floppy disks
"The 4x USB Floppy Drive is 400% faster than a typical 1x floppy drive, making it the fastest drive available today. "
NOT HOW MATH WORKS
Log 🪵
Rylie Stargazer 🏳️⚧️