polpo

9 ms·

61.
by polpo 3y ago
Hardware design came first but the design did have to take into account some of the constraints of programming PIO. I had to make sure certain signals were on adjacent pins, since the range of pins you must set for in, out, set, or sideset
62.
by polpo 3y ago
Thanks for posting this! I'm the author of the project and I've seen it pop up here on HN a few times when searching but I haven't seen it make it the front page until now. It's been really fun pushing the limits of the
63.
by polpo 3y ago
It's on the list of things I want to support eventually. A friend I collaborate with on Discord is working on Sound Blaster support for his Pico-based retro PCMCIA project and I plan on using his code. I'd adapt DOSBox's SB c
64.
by polpo 3y ago
PIO is indeed awesome! A while ago I was wondering if the RP2040 could be used as a scandoubler (and talking about it with the Chrissy who left a comment on your blog). I was originally discouraged and decided to not pursue it because the A
65.
by polpo 3y ago
I ordered a HAND 386 before it was removed from sale. The order hasn’t shipped yet and I’m trying to not get my hopes up too much that it will actually ship. I was going to use it was a portable testbench for my RP2040-based ISA card emulat
66.
by polpo 3y ago
About 10 years ago I applied for a software engineering job at a startup that had the title “System D Engineer.” I thought it was the perfect distillation of what it’s like being an engineer at an early stage startup. I got the offer and I
67.
by polpo 4y ago
Yep, I am.
68.
by polpo 4y ago
Welll.... the RP2040 is a dollar and can be overclocked to 300MHz (peripheral clocks get a little weird around that point, but they can be clocked down).
69.
by polpo 4y ago
I’ve been around Unixes since the early 90s and was around for the transition away from telnet and I only learned about this about 5 years ago. Shoulda read the whole man page, I guess.
70.
by polpo 4y ago
It's the opposite of excessive. If you need scan conversion, which you almost certainly do, this is far cheaper than just about anything else you can use to get a usable video signal out of a compact Macintosh.
71.
by polpo 4y ago
Compact Macs have a horizontal scanning frequency of 22.2kHz. Good luck finding an LCD that will sync to that. Fun bit of trivia: Compact Macs also used the video scanning sync timing to feed the audio DAC, producing 8-bit audio at 22.2kHz.
72.
by polpo 4y ago
You're exactly describing the base model Nissan Leaf before the 2018 models. And base models of the 2018 and later Leaf are still relatively spartan.
73.
by polpo 4y ago
Our house has 100A service and we use a 30A car charger and have never popped our main breaker. On a hot day when the AC is likely to run, I'll hit the button on my car charger to delay charging to the middle of the night when we won&#
74.
by polpo 4y ago
ISA is very forgiving timing wise. As long as you have the data on the pins when IOR or do your read by the time IOW is deasserted by the chipset you’re fine. And you can always deassert IOCHRDY and get all the time in the world to respond
75.
by polpo 4y ago
I had some very successful experiments with bit banging ISA on a Raspberry Pi 3 and 4 a while ago: https://github.com/polpo/pigus I quickly moved over to a Raspberry Pi Pico because it's much better suited to such
76.
by polpo 4y ago
I'm the creator of PicoGUS... PIO is kind of like hardware assisted bit banging. You program a very simple, extremely fast computer (aka the PIO peripheral on the RP2040) to do the bit banging for you. :)
77.
by polpo 4y ago
I'm not sure where I learned it, but I've found that in many older elevators in the US, pressing door close simultaneously with the floor number will also get the doors to close immediately.
78.
by polpo 4y ago
I'm the author of the project, I know this post doesn't have many votes but I'm happy to answer any questions about it.
79.
by polpo 5y ago
A while ago Ron Gilbert laid out what it'd look like if and when he was able to make another Monkey Island game: https://grumpygamer.com/if_i_made_another_monkeyisland . He said he'd fork off the Monkey Island cano
80.
by polpo 5y ago
Especially since a large number of people are probably downloading the app in a panic at the airport on crappy overloaded WiFi or cell signal.
81.
by polpo 5y ago
Polaroid even capitalized on this a bit – they produced a radio that ran on the batteries in spent film packs in the 1980s.
82.
by polpo 5y ago
“Open hardware” is a pretty generic term and OSHWA doesn’t have a monopoly over how people use it.
83.
by polpo 5y ago
I wouldn't paint with such a broad brush. I've recently gotten way into retrocomputing, DOS included, I absolutely lived through that era. I spent my formative computing years in the early to mid 90s deep in DOS, mostly playing ga
84.
by polpo 5y ago
In 1999 I ran a mail server with qmail that handled incoming and outgoing mail for my personal domain and also a somewhat large (20GB) pirate MP3 FTP site, all from a server in the closet of my campus dorm room. The campus IT never said a
85.
by polpo 5y ago
It also means your phone's battery is not draining while you're playing music. I use spotifyd on a Raspberry Pi and it's pretty wonderful.
86.
by polpo 5y ago
As a part of the sale of HGST to WD, Toshiba got assets to produce 3.5” hard drives from HGST. I’d consider them the true heirs of HGST, and their good reliability as shown in Backblaze’s studies bear that out.
87.
by polpo 5y ago
The great thing about TW2002 is that it was simple on the surface, which made it accessible. You could have fun warping around, trading goods, but then eventually you'd start digging and find the incredible depth in the game. The first
88.
by polpo 6y ago
I have a T2i that I use with the EOS Webcam Utility and it works just fine despite not being listed as compatible.
89.
by polpo 6y ago
The original URL, the highly memorable http://www2.warnerbros.com/spacejam/movie/jam.htm shows as pretty consistently available on the Internet Archive since 2003.
90.
by polpo 7y ago
How many colors were you able to get with moving graphics? From the article the CRTC hacking needed to get the last 512 colors is too CPU intensive for anything but static images on an 8088.

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