mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-09-10 16:53:15 +02:00
37 lines
1.4 KiB
C
37 lines
1.4 KiB
C
|
#ifndef _MACROS_H_
|
||
|
|
#define _MACROS_H_
|
||
|
|
|
||
|
|
#ifdef LSB_FIRST
|
||
|
|
|
||
|
|
#define READ_BYTE(BASE, ADDR) (BASE)[(ADDR)^1]
|
||
|
|
|
||
|
|
#define READ_WORD(BASE, ADDR) (((BASE)[ADDR]<<8) | (BASE)[(ADDR)+1])
|
||
|
|
|
||
|
|
#define READ_WORD_LONG(BASE, ADDR) (((BASE)[(ADDR)+1]<<24) | \
|
||
|
|
((BASE)[(ADDR)]<<16) | \
|
||
|
|
((BASE)[(ADDR)+3]<<8) | \
|
||
|
|
(BASE)[(ADDR)+2])
|
||
|
|
|
||
|
|
#define WRITE_BYTE(BASE, ADDR, VAL) (BASE)[(ADDR)^1] = (VAL)&0xff
|
||
|
|
|
||
|
|
#define WRITE_WORD(BASE, ADDR, VAL) (BASE)[ADDR] = ((VAL)>>8) & 0xff; \
|
||
|
|
(BASE)[(ADDR)+1] = (VAL)&0xff
|
||
|
|
|
||
|
|
#define WRITE_WORD_LONG(BASE, ADDR, VAL) (BASE)[(ADDR+1)] = ((VAL)>>24) & 0xff; \
|
||
|
|
(BASE)[(ADDR)] = ((VAL)>>16)&0xff; \
|
||
|
|
(BASE)[(ADDR+3)] = ((VAL)>>8)&0xff; \
|
||
|
|
(BASE)[(ADDR+2)] = (VAL)&0xff
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
#define READ_BYTE(BASE, ADDR) (BASE)[ADDR]
|
||
|
|
#define READ_WORD(BASE, ADDR) *(uint16 *)((BASE) + (ADDR))
|
||
|
|
#define READ_WORD_LONG(BASE, ADDR) *(uint32 *)((BASE) + (ADDR))
|
||
|
|
#define WRITE_BYTE(BASE, ADDR, VAL) (BASE)[ADDR] = VAL & 0xff
|
||
|
|
#define WRITE_WORD(BASE, ADDR, VAL) *(uint16 *)((BASE) + (ADDR)) = VAL & 0xffff
|
||
|
|
#define WRITE_WORD_LONG(BASE, ADDR, VAL) *(uint32 *)((BASE) + (ADDR)) = VAL & 0xffffffff
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* _MACROS_H_ */
|