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[/] [t48/] [tags/] [rel_0_6__beta/] [sw/] [i8039emu/] [types.h] - Rev 292
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/* * $Id: types.h,v 1.1.1.1 2004-04-09 19:20:53 arniml Exp $ * */ #ifndef _TYPES_H_ #define _TYPES_H_ typedef unsigned char UINT8; typedef unsigned short UINT16; typedef unsigned int UINT32; #define LSB_FIRST /****************************************************************************** * Union of UINT8, UINT16 and UINT32 in native endianess of the target * This is used to access bytes and words in a machine independent manner. * The upper bytes h2 and h3 normally contain zero (16 bit CPU cores) * thus PAIR.d can be used to pass arguments to the memory system * which expects 'int' really. ******************************************************************************/ typedef union { #ifdef LSB_FIRST struct { UINT8 l,h,h2,h3; } b; struct { UINT16 l,h; } w; #else struct { UINT8 h3,h2,h,l; } b; struct { UINT16 h,l; } w; #endif UINT32 d; } PAIR; /************************************* * * Interrupt line constants * *************************************/ enum { /* line states */ CLEAR_LINE = 0, /* clear (a fired, held or pulsed) line */ ASSERT_LINE, /* assert an interrupt immediately */ HOLD_LINE, /* hold interrupt line until acknowledged */ PULSE_LINE, /* pulse interrupt line for one instruction */ /* internal flags (not for use by drivers!) */ INTERNAL_CLEAR_LINE = 100 + CLEAR_LINE, INTERNAL_ASSERT_LINE = 100 + ASSERT_LINE, /* interrupt parameters */ MAX_IRQ_LINES = 32+1, /* maximum number of IRQ lines per CPU */ IRQ_LINE_NMI = MAX_IRQ_LINES - 1 /* IRQ line for NMIs */ }; #endif