rewrite OneBus and some fixes

- Fix m256 $8000 write in mmc3 mode

- m270: Fix bank mask in submapper 2

- cleanup etc.

Author: negativeExponent

src/cart.h

@@ -63,8 +63,8 @@ typedef struct mem_t {
 } mem_t;
 
 typedef struct romData_t {
-	mem_t prg; /* size in 16k banks */
-	mem_t chr; /* size in 8k banks */
+	mem_t prg;
+	mem_t chr;
 	mem_t misc;
 	mem_t disk;
 	mem_t disko;

src/git.h

@@ -27,6 +27,22 @@ enum GIV {
 	GIV_USER = 2  /* What was set by FCEUI_SetVidSys(). */
 };
 
+enum ConsoleType {
+	CONSOLE_REGULAR_NES = 0x00,
+	CONSOLE_VS = 0x01,
+	CONSOLE_PC10 = 0x02,
+	CONSOLE_FAMICLONE_DECIMAL_MODE = 0x03,
+	CONSOLE_EPSM = 0x04,
+	CONSOLE_VT01STN = 0x05,
+	CONSOLE_VT02 = 0x06,
+	CONSOLE_VT03 = 0x07,
+	CONSOLE_VT09 = 0x08,
+	CONSOLE_VT32 = 0x09,
+	CONSOLE_VT369 = 0x0A,
+	CONSOLE_UM6578 = 0x0B,
+	CONSOLE_FAMICOM_NETWORK_SYSTEM = 0x0C
+};
+
 enum GIPPU {
 	PPU_USER        = 0,
 	PPU_RP2C04_0001 = 1,