GBDK 2020 Docs  4.1.1
API Documentation for GBDK 2020
types.h File Reference
#include <asm/sm83/types.h>

Go to the source code of this file.

Data Structures

union  _fixed
 

Macros

#define OLDCALL
 
#define PRESERVES_REGS(...)
 
#define NAKED
 
#define SFR
 
#define AT(A)
 
#define NONBANKED
 
#define BANKED
 
#define CRITICAL
 
#define INTERRUPT
 

Typedefs

typedef INT8 BOOLEAN
 
typedef INT8 BYTE
 
typedef UINT8 UBYTE
 
typedef INT16 WORD
 
typedef UINT16 UWORD
 
typedef INT32 LWORD
 
typedef UINT32 ULWORD
 
typedef INT32 DWORD
 
typedef UINT32 UDWORD
 
typedef union _fixed fixed
 

Detailed Description

Shared types definitions.

Macro Definition Documentation

◆ OLDCALL

#define OLDCALL

◆ PRESERVES_REGS

#define PRESERVES_REGS (   ...)

◆ NAKED

#define NAKED

◆ SFR

#define SFR

◆ AT

#define AT (   A)

◆ NONBANKED

#define NONBANKED

◆ BANKED

#define BANKED

◆ CRITICAL

#define CRITICAL

◆ INTERRUPT

#define INTERRUPT

Typedef Documentation

◆ BOOLEAN

typedef INT8 BOOLEAN

TRUE or FALSE.

◆ BYTE

typedef INT8 BYTE

Signed 8 bit.

◆ UBYTE

typedef UINT8 UBYTE

Unsigned 8 bit.

◆ WORD

typedef INT16 WORD

Signed 16 bit

◆ UWORD

typedef UINT16 UWORD

Unsigned 16 bit

◆ LWORD

typedef INT32 LWORD

Signed 32 bit

◆ ULWORD

typedef UINT32 ULWORD

Unsigned 32 bit

◆ DWORD

typedef INT32 DWORD

Signed 32 bit

◆ UDWORD

typedef UINT32 UDWORD

Unsigned 32 bit

◆ fixed

typedef union _fixed fixed

Useful definition for working with 8 bit + 8 bit fixed point values

Use .w to access the variable as unsigned 16 bit type.

Use .b.h and .b.l (or just .h and .l) to directly access it's high and low unsigned 8 bit values.