merged

simulator_SIC_XE/include/constants.h

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+#ifndef CONSTANTS_H
+#define CONSTANTS_H
+
+#include <string>
+// ==============================
+// SIC/XE Architecture Constants
+// ==============================
+
+// Memory and system constants
+constexpr int MEMORY_SIZE = 1 << 20; // 1 MB memory
+constexpr int NUM_DEVICES = 256;
+constexpr int WORD_SIZE = 24;
+constexpr int WORD_MASK = 0xFFFFFF;
+
+// SIC/XE floating point constants
+constexpr int SICF_BITS      = 48;
+constexpr int SICF_FRAC_BITS = 40;
+constexpr int SICF_EXP_BITS  = 7;
+constexpr int SICF_EXP_BIAS  = 64;
+constexpr unsigned long long SICF_FRAC_MASK = (1ULL << SICF_FRAC_BITS) - 1;
+
+// SW register condition codes
+constexpr int CC_LT   = 0x0;  // 00
+constexpr int CC_EQ   = 0x1;  // 01
+constexpr int CC_GT   = 0x2;  // 10
+constexpr int CC_MASK = 0x3;  // mask for 2 bits
+
+// Instruction format bit masks
+constexpr int TYPE3_4_SIC_MASK = 0xFC;
+constexpr int NI_MASK = 0x03;   // mask for n and i bits
+constexpr int NI_SIC = 0x0;
+
+constexpr int BP_BASE_REL_MASK = 0b10;
+constexpr int BP_PC_REL_MASK = 0b01;
+constexpr int BP_DIRECT_MASK = 0b00;
+
+constexpr int BIT_E_MASK = 0x10; // mask for e bit in F4 and F3 instructions
+
+//SIC/XE/XE
+constexpr bool USE_EXTENDED_MODE = true;
+constexpr int VECTOR_REG_SIZE = 4;
+
+/* if structure is
+/target/
+       |-> bin/simulator_exec
+       |-> res/
+*/
+// When running from project root (./target/bin/simulator_exec), resources are in ./target/res/
+constexpr char PATH_RESOURCES[] = "./target/res/";
+constexpr bool FILE_CONTAINS_WHITE_SPACES = true;
+
+#endif // CONSTANTS_H