Minute documentation fixes

Author: dingusdev

devices/ethernet/bigmac.h

@@ -61,6 +61,7 @@ enum BigMacReg : uint16_t {
     PA_LEN      = 0x480, // Apple: PA Len, Sun: PA Size
     PA_PAT      = 0x490, 
     TX_SFD      = 0x4A0,
+    JAM_SIZE    = 0x4B0,
     TX_MAX      = 0x4C0, // Max frame size
     TX_MIN      = 0x4D0, // Min frame size
     PEAK_ATT    = 0x4E0, // Apple: kPAREG, Sun: PeakAttempts Register
@@ -82,6 +83,7 @@ enum BigMacReg : uint16_t {
     RX_LE_CNT   = 0x6A0, // Length Error Counter
     RX_AE_CNT   = 0x6B0, // Alignment Error Counter
     RX_FE_CNT   = 0x6C0, // FCS Error Counter
+    RX_ST_MCHN  = 0x6D0, // RX State Machine
     RX_CVE_CNT  = 0x6E0, // Code Violation Error Counter
     HASH_TAB_3  = 0x700,
     HASH_TAB_2  = 0x710,

zdocs/developers/awacs.md

@@ -28,7 +28,7 @@ All registers are 32-bit here.
 | Byte Swapping     | 0x40   |
 | Frame Count       | 0x50   |
 
-##Sound Control Register bits
+## Sound Control Register bits
 
 | Register                  | Bit Mask |
 |:-------------------------:|:--------:|

zdocs/developers/cpu/powerpc/powerpc.md

@@ -111,6 +111,10 @@ PowerPC supports both big-endian and little-endian modes. Mac OS largely operate
 
 * To accommodate for early programs compiled on PowerPC 601 Macs, the classic Mac OS has to emulate the POWER instructions that were removed from later processors.
 
+* BeOS uses the exception handler by deliberating invoking a supervisor-level instruction while the PR bit is set in the MSR.
+
+* Mac OS X touches the FP bit in the MSR to performing floating-point operations.
+
 # References
 
 http://www.ibmfiles.com/ibmfiles/powerpc/itso_powerpc_inside_view.pdf

zdocs/users/manual.md

@@ -142,7 +142,7 @@ The debugger will be turned on here, due to the presence of `-d`. The CD ROM ima
 
 ## Accessing OpenFirmware
 
-After booting from a PCI Power Mac ROM without any disk images, enter the debugger and change the NVRAM property `auto-boot?` to false. Quit of the emulator and boot it back up to access it.
+After booting from a PCI Power Mac ROM without any disk images, enter the debugger and change the NVRAM property `auto-boot?` to false. Exit out of the emulator and boot it back up to access it.
 
 ## Supported machines