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[/] [eco32/] [tags/] [eco32-0.26/] [sim/] [common.h] - Rev 275
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/* * common.h -- common definitions */ #ifndef _COMMON_H_ #define _COMMON_H_ #define K 1024 /* Kilo */ #define M (K * K) /* Mega */ #define RAM_BASE 0x00000000 /* physical RAM base address */ #define RAM_SIZE_MAX (512 * M) /* maximum RAM size */ #define RAM_SIZE_DFL (4 * M) /* default RAM size */ #define ROM_BASE 0x20000000 /* physical ROM base address */ #define ROM_SIZE_MAX (256 * M) /* maximum ROM size */ #define ROM_SIZE (256 * K) /* actual ROM size */ #define IO_BASE 0x30000000 /* physical I/O base address */ #define IO_SIZE_MAX (256 * M) /* maximum I/O size */ #define IO_DEV_MASK 0x3FF00000 /* I/O device mask */ #define IO_REG_MASK 0x000FFFFF /* I/O register mask */ #define IO_GRAPH_MASK 0x003FFFFF /* I/O graphics mask */ #define TIMER_BASE 0x30000000 /* physical timer base address */ #define DISPLAY_BASE 0x30100000 /* physical display base address */ #define KEYBOARD_BASE 0x30200000 /* physical keyboard base address */ #define SERIAL_BASE 0x30300000 /* physical serial line base address */ #define MAX_NSERIALS 2 /* max number of serial lines */ #define DISK_BASE 0x30400000 /* physical disk base address */ #define OUTPUT_BASE 0x3F000000 /* physical output device address */ #define SHUTDOWN_BASE 0x3F100000 /* physical shutdown device address */ #define GRAPH_BASE 0x3FC00000 /* physical grahics base address */ /* extends to end of address space */ #define PAGE_SIZE (4 * K) /* size of a page and a page frame */ #define OFFSET_MASK (PAGE_SIZE - 1) /* mask for offset within a page */ #define PAGE_MASK (~OFFSET_MASK) /* mask for page number */ #define CC_PER_USEC 50 /* clock cycles per microsecond */ #define CC_PER_INSTR 18 /* clock cycles per instruction */ typedef enum { false, true } Bool; /* truth values */ typedef unsigned char Byte; /* 8 bit quantities */ typedef unsigned short Half; /* 16 bit quantities */ typedef unsigned int Word; /* 32 bit quantities */ #endif /* _COMMON_H_ */
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