Change bold code snippets to inline code blocks

43-04.md

@@ -35,7 +35,7 @@ like—dare I say it?—a games machine.
 Listing 43.1 was designed to run at the absolute fastest speed, and as I
 mentioned it puts in a pretty amazing performance on the slowest PCs of
 all. Assuming you'll be running Listing 43.1 on an faster computer,
-you'll have to crank up the **DELAY** equate at the start of Listing
+you'll have to crank up the `DELAY` equate at the start of Listing
 43.1 to slow things down to a reasonable pace. (It's not a very good
 game where all the pieces are a continual blur!) Even on something as
 modest as a 286-based AT, Listing 43.1 runs much too fast without a
@@ -47,11 +47,11 @@ into the hundreds on a cutting-edge local-bus 486 or Pentium.
 I'm not going to discuss Listing 43.1 in detail; the code is very
 thoroughly commented and should speak for itself, and most of the
 individual components of Listing 43.1—the Map Mask register, mode sets,
-word versus byte **OUT** instructions to the VGA—have been covered in
+word versus byte `OUT` instructions to the VGA—have been covered in
 earlier chapters. Do notice, however, that Listing 43.1 sets the palette
 exactly as I described earlier. This is accomplished by passing a
 pointer to a 17-byte array (1 byte for each of the 16 palette registers,
-and 1 byte for the border color) to the BIOS video interrupt (**INT**
+and 1 byte for the border color) to the BIOS video interrupt (`INT`
 10H), function 10H, subfunction 2.
 
 Bit-plane animation does have inherent limitations, which we'll get to