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[/] [xulalx25soc/] [trunk/] [bench/] [cpp/] [sdramsim.h] - Rev 99
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#ifndef SDRAMSIM_H #define NBANKS 4 #define POWERED_UP_STATE 6 #define CLK_RATE_HZ 100000000 // = 100 MHz = 100 * 10^6 #define PWRUP_WAIT_CKS ((int)(.000200 * CLK_RATE_HZ)) #define MAX_BANKOPEN_TIME ((int)(.000100 * CLK_RATE_HZ)) #define MAX_REFRESH_TIME ((int)(.064 * CLK_RATE_HZ)) #define SDRAM_QSZ 16 class SDRAMSIM { int m_pwrup; short *m_mem; short m_last_value, m_qmem[4]; int m_bank_status[NBANKS]; int m_bank_row[NBANKS]; int m_bank_open_time[NBANKS]; unsigned *m_refresh_time; int m_refresh_loc, m_nrefresh; int m_qloc, m_qdata[SDRAM_QSZ], m_qmask, m_wr_addr; int m_clocks_till_idle; bool m_next_wr; unsigned m_fail; public: SDRAMSIM(void) { m_mem = new short[(1<<24)]; // 32 MB, or 16 Mshorts m_refresh_time = new unsigned[(1<<13)]; for(int i=0; i<m_nrefresh; i++) m_refresh_time[i] = 0; m_refresh_loc = 0; m_pwrup = 0; m_clocks_till_idle = 0; m_last_value = 0; m_clocks_till_idle = PWRUP_WAIT_CKS; m_wr_addr = 0; m_qloc = 0; m_qmask = SDRAM_QSZ-1; m_next_wr = true; m_fail = 0; } ~SDRAMSIM(void) { delete m_mem; } short operator()(int clk, int cke, int cs_n, int ras_n, int cas_n, int we_n, int bs, unsigned addr, int driv, short data); int pwrup(void) const { return m_pwrup; } }; #endif
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