The PC Engine CD-ROM² consists of a HuCard containing a BIOS, which interfaces with the actual CD-ROM drive and serves as a bare-bones operating system of sorts for CD-ROM games.
Like all HuCards, the System Card is mapped to the $E000-$FFFF memory range on startup (MPR#7 = $00), and developers should not change this when calling BIOS functions since the code assume that base address. The BIOS also assumes/requires that MPR#0 is $FF and MPR#1 is $F8 to map the I/O and Work RAM to the beginning of address space, which is standard anyway.
When it comes to playing fighting games or certain arcade/MAME games, an Arcade Stick can be nicer than a gamepad. You can really mash the buttons and yank the lever (that’s the technical name for the actual stick).
There are many that you can just buy, and that’s probably the preferred choice. Hori has long been a trusted brand, I actually own a Victrix Pro FS, the Hitbox is getting a lot of buzz because it’s all buttons, no lever, and I’m currently waiting on a Snackbox Micro because of it’s size. Seriously, it’s tiny.
Most ATX Mainboards have somewhere between 3 and 5 PCI Express slots. Generally, an x16, x8 and some x1's, but if you have e.g., a Threadripper X399 board you might have several x8 and x16 slots.
But what if you want more devices than you have slots? Let's say you want a whole bunch of M.2 NVMe drives, which are only x4 each. Ignoring any motherboard M.2 slots, you can use adapter cards that just adapt the different slots:
One of the nice things about .net is that you can automatically generate an .xml file for the xmldoc comments. But the default compiler warning can entice developers to put in superflous or otherwise unhelpful comments.
Nonograms - also known as Griddlers, Picture Crosswords, or Picross - are pretty cool puzzles, kind of like a more visual Crossword puzzle or Sudoku. Of all the games on my New 2DS XL, Mario's Picross and the Picross e series are near the top of my Activity Log (beaten only by Smash Bros).
I got curious about algorithmic solutions to those Nonograms, which seems deceptively easy, but is actually NP-complete. When trying to solve a Nonogram, often I can to only fill in one or a few cells of a group, which then leads to another cell that can be filled in (or X-ed out), and step by step, cell by cell, I solve the Nonogram. Now, that assumes that the Nonogram is properly designed - if that's the case, then there is always at least one cell that either must definitely be filled or definitely be empty.