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path: root/src/emu/cpu/ccpu/ccpudasm.c
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Diffstat (limited to 'src/emu/cpu/ccpu/ccpudasm.c')
-rw-r--r--src/emu/cpu/ccpu/ccpudasm.c327
1 files changed, 327 insertions, 0 deletions
diff --git a/src/emu/cpu/ccpu/ccpudasm.c b/src/emu/cpu/ccpu/ccpudasm.c
new file mode 100644
index 00000000000..c51f2c7ca84
--- /dev/null
+++ b/src/emu/cpu/ccpu/ccpudasm.c
@@ -0,0 +1,327 @@
+/***************************************************************************
+
+ ccpudasm.c
+ Core implementation for the portable Cinematronics CPU disassembler.
+
+ Written by Aaron Giles
+ Special thanks to Zonn Moore for his detailed documentation.
+
+***************************************************************************/
+
+#include "ccpu.h"
+
+
+offs_t ccpu_dasm(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram)
+{
+ unsigned startpc = pc;
+ UINT8 opcode = oprom[pc++ - startpc];
+ UINT8 tempval;
+
+ switch (opcode)
+ {
+ /* LDAI */
+ case 0x00: case 0x01: case 0x02: case 0x03:
+ case 0x04: case 0x05: case 0x06: case 0x07:
+ case 0x08: case 0x09: case 0x0a: case 0x0b:
+ case 0x0c: case 0x0d: case 0x0e: case 0x0f:
+ sprintf(buffer, "LDAI $%X", opcode & 0x0f);
+ break;
+
+ /* INP */
+ case 0x10: case 0x11: case 0x12: case 0x13:
+ case 0x14: case 0x15: case 0x16: case 0x17:
+ case 0x18: case 0x19: case 0x1a: case 0x1b:
+ case 0x1c: case 0x1d: case 0x1e: case 0x1f:
+ sprintf(buffer, "INP $%X", opcode & 0x0f);
+ break;
+
+ /* A8I */
+ case 0x20:
+ sprintf(buffer, "A8I $%X", oprom[pc++ - startpc]);
+ break;
+
+ /* A4I */
+ case 0x21: case 0x22: case 0x23:
+ case 0x24: case 0x25: case 0x26: case 0x27:
+ case 0x28: case 0x29: case 0x2a: case 0x2b:
+ case 0x2c: case 0x2d: case 0x2e: case 0x2f:
+ sprintf(buffer, "A4I $%X", opcode & 0x0f);
+ break;
+
+ /* S8I */
+ case 0x30:
+ sprintf(buffer, "S8I $%X", oprom[pc++ - startpc]);
+ break;
+
+ /* S4I */
+ case 0x31: case 0x32: case 0x33:
+ case 0x34: case 0x35: case 0x36: case 0x37:
+ case 0x38: case 0x39: case 0x3a: case 0x3b:
+ case 0x3c: case 0x3d: case 0x3e: case 0x3f:
+ sprintf(buffer, "S4I $%X", opcode & 0x0f);
+ break;
+
+ /* LPAI */
+ case 0x40: case 0x41: case 0x42: case 0x43:
+ case 0x44: case 0x45: case 0x46: case 0x47:
+ case 0x48: case 0x49: case 0x4a: case 0x4b:
+ case 0x4c: case 0x4d: case 0x4e: case 0x4f:
+ tempval = oprom[pc++ - startpc];
+ sprintf(buffer, "LPAI $%03X", (opcode & 0x0f) + (tempval & 0xf0) + ((tempval & 0x0f) << 8));
+ break;
+
+ /* T4K */
+ case 0x50:
+ sprintf(buffer, "T4K");
+ break;
+
+ /* JMIB/JEHB */
+ case 0x51:
+ sprintf(buffer, "JMIB/JEHB");
+ break;
+
+ /* JVNB */
+ case 0x52:
+ sprintf(buffer, "JVNB");
+ break;
+
+ /* JLTB */
+ case 0x53:
+ sprintf(buffer, "JLTB");
+ break;
+
+ /* JEQB */
+ case 0x54:
+ sprintf(buffer, "JEQB");
+ break;
+
+ /* JCZB */
+ case 0x55:
+ sprintf(buffer, "JCZB");
+ break;
+
+ /* JOSB */
+ case 0x56:
+ sprintf(buffer, "JOSB");
+ break;
+
+ /* SSA */
+ case 0x57:
+ sprintf(buffer, "SSA");
+ break;
+
+ /* JMP */
+ case 0x58:
+ sprintf(buffer, "JMP");
+ break;
+
+ /* JMI/JEH */
+ case 0x59:
+ sprintf(buffer, "JMI/JEH");
+ break;
+
+ /* JVN */
+ case 0x5a:
+ sprintf(buffer, "JVN");
+ break;
+
+ /* JLT */
+ case 0x5b:
+ sprintf(buffer, "JLT");
+ break;
+
+ /* JEQ */
+ case 0x5c:
+ sprintf(buffer, "JEQ");
+ break;
+
+ /* JCZ */
+ case 0x5d:
+ sprintf(buffer, "JCZ");
+ break;
+
+ /* JOS */
+ case 0x5e:
+ sprintf(buffer, "JOS");
+ break;
+
+ /* NOP */
+ case 0x5f:
+ sprintf(buffer, "NOP");
+ break;
+
+ /* ADD */
+ case 0x60: case 0x61: case 0x62: case 0x63:
+ case 0x64: case 0x65: case 0x66: case 0x67:
+ case 0x68: case 0x69: case 0x6a: case 0x6b:
+ case 0x6c: case 0x6d: case 0x6e: case 0x6f:
+ sprintf(buffer, "ADD $%X", opcode & 0x0f);
+ break;
+
+ /* SUB n */
+ case 0x70: case 0x71: case 0x72: case 0x73:
+ case 0x74: case 0x75: case 0x76: case 0x77:
+ case 0x78: case 0x79: case 0x7a: case 0x7b:
+ case 0x7c: case 0x7d: case 0x7e: case 0x7f:
+ sprintf(buffer, "SUB $%X", opcode & 0x0f);
+ break;
+
+ /* SETP n */
+ case 0x80: case 0x81: case 0x82: case 0x83:
+ case 0x84: case 0x85: case 0x86: case 0x87:
+ case 0x88: case 0x89: case 0x8a: case 0x8b:
+ case 0x8c: case 0x8d: case 0x8e: case 0x8f:
+ sprintf(buffer, "SETP $%X", opcode & 0x0f);
+ break;
+
+ /* OUT */
+ case 0x90: case 0x91: case 0x92: case 0x93:
+ case 0x94: case 0x95: case 0x96: case 0x97:
+ case 0x98: case 0x99: case 0x9a: case 0x9b:
+ case 0x9c: case 0x9d: case 0x9e: case 0x9f:
+ sprintf(buffer, "OUT $%X", opcode & 0x0f);
+ break;
+
+ /* LDA */
+ case 0xa0: case 0xa1: case 0xa2: case 0xa3:
+ case 0xa4: case 0xa5: case 0xa6: case 0xa7:
+ case 0xa8: case 0xa9: case 0xaa: case 0xab:
+ case 0xac: case 0xad: case 0xae: case 0xaf:
+ sprintf(buffer, "LDA $%X", opcode & 0x0f);
+ break;
+
+ /* CMP */
+ case 0xb0: case 0xb1: case 0xb2: case 0xb3:
+ case 0xb4: case 0xb5: case 0xb6: case 0xb7:
+ case 0xb8: case 0xb9: case 0xba: case 0xbb:
+ case 0xbc: case 0xbd: case 0xbe: case 0xbf:
+ sprintf(buffer, "TST $%X", opcode & 0x0f);
+ break;
+
+ /* WS */
+ case 0xc0: case 0xc1: case 0xc2: case 0xc3:
+ case 0xc4: case 0xc5: case 0xc6: case 0xc7:
+ case 0xc8: case 0xc9: case 0xca: case 0xcb:
+ case 0xcc: case 0xcd: case 0xce: case 0xcf:
+ sprintf(buffer, "WS $%X", opcode & 0x0f);
+ break;
+
+ /* STA n */
+ case 0xd0: case 0xd1: case 0xd2: case 0xd3:
+ case 0xd4: case 0xd5: case 0xd6: case 0xd7:
+ case 0xd8: case 0xd9: case 0xda: case 0xdb:
+ case 0xdc: case 0xdd: case 0xde: case 0xdf:
+ sprintf(buffer, "STA $%X", opcode & 0x0f);
+ break;
+
+ /* DV */
+ case 0xe0:
+ sprintf(buffer, "DV");
+ break;
+
+ /* LPAP */
+ case 0xe1:
+ sprintf(buffer, "LPAP");
+ break;
+
+ /* WSP */
+ case 0xf1:
+ sprintf(buffer, "WSP");
+ break;
+
+ /* LKP */
+ case 0xe2:
+ case 0xf2:
+ sprintf(buffer, "LKP");
+ break;
+
+ /* MUL */
+ case 0xe3:
+ case 0xf3:
+ sprintf(buffer, "MUL");
+ break;
+
+ /* NV */
+ case 0xe4:
+ case 0xf4:
+ sprintf(buffer, "NV");
+ break;
+
+ /* FRM */
+ case 0xe5:
+ case 0xf5:
+ sprintf(buffer, "FRM");
+ break;
+
+ /* STAP */
+ case 0xe6:
+ case 0xf6:
+ sprintf(buffer, "STAP");
+ break;
+
+ /* CST */
+ case 0xf7:
+ sprintf(buffer, "CST");
+ break;
+
+ /* ADDP */
+ case 0xe7:
+ sprintf(buffer, "ADDP");
+ break;
+
+ /* SUBP */
+ case 0xe8:
+ case 0xf8:
+ sprintf(buffer, "SUBP");
+ break;
+
+ /* ANDP */
+ case 0xe9:
+ case 0xf9:
+ sprintf(buffer, "ANDP");
+ break;
+
+ /* LDAP */
+ case 0xea:
+ case 0xfa:
+ sprintf(buffer, "LDAP");
+ break;
+
+ /* SHR */
+ case 0xeb:
+ case 0xfb:
+ sprintf(buffer, "SHR");
+ break;
+
+ /* SHL */
+ case 0xec:
+ case 0xfc:
+ sprintf(buffer, "SHL");
+ break;
+
+ /* ASR */
+ case 0xed:
+ case 0xfd:
+ sprintf(buffer, "ASR");
+ break;
+
+ /* SHRB */
+ case 0xee:
+ case 0xfe:
+ sprintf(buffer, "SHRB");
+ break;
+
+ /* SHLB */
+ case 0xef:
+ case 0xff:
+ sprintf(buffer, "SHLB");
+ break;
+
+ /* IV */
+ case 0xf0:
+ sprintf(buffer, "IV");
+ break;
+ }
+
+ return (pc - startpc) | DASMFLAG_SUPPORTED;
+}