single speed -> normal speed (#613)

The Game Boy Color always has two speeds available

Author: ReiquelApplegate

src/Accessing_VRAM_and_OAM.md

@@ -46,7 +46,7 @@ start of Mode 0 is to disable all the individual STAT interrupts except Mode 0
 (STAT bit 3), enable STAT interrupts (IE bit 1), disable IME (by executing `di`),
 and use the `halt` instruction. This allows
 use of the entire Mode 0 on one line and Mode 2 on the following line,
-which sum to 165 to 288 dots. For comparison, at single speed (4 dots
+which sum to 165 to 288 dots. For comparison, at normal speed (4 dots
 per machine cycle), a copy from stack that takes
 9 cycles per 2 bytes can push 8 bytes (half a tile) in 144 dots, which
 fits within the worst case timing for mode 0+2.

src/CGB_Registers.md

@@ -115,7 +115,7 @@ manually terminating a HBlank Transfer.
 
 In both Normal Speed and Double Speed Mode it takes about 8 μs to
 transfer a block of $10 bytes.
-That is, 8 M-cycles in Normal Speed Mode [\[1\]](imgs/hdma_single_speed.png),
+That is, 8 M-cycles in Normal Speed Mode [\[1\]](imgs/hdma_normal_speed.png),
 and 16 "fast" M-cycles in Double Speed Mode [\[2\]](imgs/hdma_double_speed.png).
 Older MBC controllers (like MBC1-3) and slower ROMs are not guaranteed to support General
 Purpose or HBlank DMA, that's because there are always 2 bytes
@@ -150,7 +150,7 @@ loaded VRAM bank in bit 0, and all other bits will be set to 1.
    "KEY1" 7:"Current speed" 0:"Switch armed"
 }}
 
-- **Current speed** (*Read-only*): `0` = Single-speed mode, `1` = Double-speed mode
+- **Current speed** (*Read-only*): `0` = Normal-speed mode, `1` = Double-speed mode
 - **Switch armed** (*Read/Write*): `0` = No, `1` = Armed
 
 This register is used to prepare the Game Boy to switch between CGB
@@ -171,7 +171,7 @@ ENDIF
 
 The CGB is operating in Normal Speed Mode when it is first turned on. Note
 that using the Double Speed Mode increases the power consumption; therefore, it
-would be recommended to use Single Speed whenever possible.
+would be recommended to use Normal Speed whenever possible.
 
 In Double Speed Mode the following will operate twice as fast as normal:
 

src/MBC3.md

@@ -91,4 +91,4 @@ Year-10000-Proof, provided that the cartridge gets used at least every
 ### Delays
 
 When accessing the RTC Registers, it is recommended to wait 4 µs
-(4 M-cycles in Single Speed Mode) between any separate accesses.
+(4 M-cycles in Normal Speed Mode) between any separate accesses.

src/Rendering.md

@@ -9,7 +9,7 @@ The main implication of this rendering process is the existence of **raster effe
 The most famous raster effect is modifying the [scrolling registers](<#LCD Position and Scrolling>) between scanlines to create a ["wavy" effect](https://gbdev.io/guides/deadcscroll#effects).
 
 A "**dot**" = one 2<sup>22</sup> Hz (≅ 4.194 MHz) time unit.
-Dots remain the same regardless of whether the CPU is in [Double Speed mode](<#FF4D — KEY1/SPD (CGB Mode only): Prepare speed switch>), so there are 4 dots per Single Speed M-cycle, and 2 per Double Speed M-cycle.
+Dots remain the same regardless of whether the CPU is in [Double Speed mode](<#FF4D — KEY1/SPD (CGB Mode only): Prepare speed switch>), so there are 4 dots per Normal Speed M-cycle, and 2 per Double Speed M-cycle.
 
 :::tip NOTE
 

src/STAT.md

@@ -2,7 +2,7 @@
 
 :::tip TERMINOLOGY
 
-A *dot* is the shortest period over which the PPU can output one pixel: is it equivalent to 1 T-cycle on DMG or on CGB Single Speed mode or 2 T-cycles on CGB Double Speed mode. On each dot during mode 3, either the PPU outputs a pixel or the fetcher is stalling the [FIFOs](<#Pixel FIFO>).
+A *dot* is the shortest period over which the PPU can output one pixel: is it equivalent to 1 T-cycle on DMG or on CGB Normal Speed mode or 2 T-cycles on CGB Double Speed mode. On each dot during mode 3, either the PPU outputs a pixel or the fetcher is stalling the [FIFOs](<#Pixel FIFO>).
 
 :::
 

src/Serial_Data_Transfer_(Link_Cable).md

@@ -36,7 +36,7 @@ incoming bit is shifted in from the other side:
 }}
 
 - **Transfer enable** (*Read/Write*): If `1`, a transfer is either requested or in progress.
-- **Clock speed** \[*CGB Mode only*\] (*Read/Write*): If set to `1`, enable high speed serial clock (~256 kHz in single-speed mode)
+- **Clock speed** \[*CGB Mode only*\] (*Read/Write*): If set to `1`, enable high speed serial clock (~256 kHz in normal-speed mode)
 - **Clock select** (*Read/Write*): `0` = External clock ("slave"), `1` = Internal clock ("master").
 
 The master Game Boy will load up a data byte in SB and then set

src/Timer_and_Divider_Registers.md

@@ -52,7 +52,7 @@ due to a timer overflow, the old value is transferred to TIMA.
   <div class="table-wrapper"><table>
     <thead>
       <tr><th rowspan=2>Clock select</th><th rowspan=2>Increment every</th><th colspan=3>Frequency (Hz)</th></tr>
-      <tr><th>DMG, SGB2, CGB in single-speed mode</th><th>SGB1</th><th>CGB in double-speed mode</th></tr>
+      <tr><th>DMG, SGB2, CGB in normal-speed mode</th><th>SGB1</th><th>CGB in double-speed mode</th></tr>
     </thead><tbody>
       <tr><td>00</td><td>256 M-cycles </td><td>  4096</td><td>  ~4194</td><td>  8192</td></tr>
       <tr><td>01</td><td>4 M-cycles   </td><td>262144</td><td>~268400</td><td>524288</td></tr>