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Diffstat (limited to 'src/emu/cpu/tms32051/dis32051.c')
-rw-r--r--src/emu/cpu/tms32051/dis32051.c643
1 files changed, 643 insertions, 0 deletions
diff --git a/src/emu/cpu/tms32051/dis32051.c b/src/emu/cpu/tms32051/dis32051.c
new file mode 100644
index 00000000000..f78862048f6
--- /dev/null
+++ b/src/emu/cpu/tms32051/dis32051.c
@@ -0,0 +1,643 @@
+#include "cpuintrf.h"
+#include <stdarg.h>
+
+
+
+static const char *zl_condition_codes[] =
+{
+ // bit 3, 2 (ZL), bit 1, 0 (MASK)
+ "", // Z=0, L=0, ZM=0, ZL=0
+ "gt", // Z=0, L=0, ZM=0, ZL=1
+ "neq", // Z=0, L=0, ZM=1, ZL=0
+ "gt", // Z=0, L=0, ZM=1, ZL=1
+ "", // Z=0, L=1, ZM=0, ZL=0
+ "lt", // Z=0, L=1, ZM=0, ZL=1
+ "neq", // Z=0, L=1, ZM=1, ZL=0
+ "lt", // Z=0, L=1, ZM=1, ZL=1
+ "", // Z=1, L=0, ZM=0, ZL=0
+ "gt", // Z=1, L=0, ZM=0, ZL=1
+ "eq", // Z=1, L=0, ZM=1, ZL=0
+ "geq", // Z=1, L=0, ZM=1, ZL=1
+ "", // Z=1, L=1, ZM=0, ZL=0
+ "lt", // Z=1, L=1, ZM=0, ZL=1
+ "eq", // Z=1, L=1, ZM=1, ZL=0
+ "leq", // Z=1, L=1, ZM=1, ZL=1
+};
+
+static const char *cv_condition_codes[16] =
+{
+ "", // C=0, V=0, CM=0, VM=0
+ "nov", // C=0, V=0, CM=0, VM=1
+ "nc", // C=0, V=0, CM=1, VM=0
+ "nc nov", // C=0, V=0, CM=1, VM=1
+ "", // C=0, V=1, CM=0, VM=0
+ "ov", // C=0, V=1, CM=0, VM=1
+ "nc", // C=0, V=1, CM=1, VM=0
+ "nc ov", // C=0, V=1, CM=1, VM=1
+ "", // C=1, V=0, CM=0, VM=0
+ "nov", // C=1, V=0, CM=0, VM=1
+ "c", // C=1, V=0, CM=1, VM=0
+ "c nov", // C=1, V=0, CM=1, VM=1
+ "", // C=1, V=1, CM=0, VM=0
+ "ov", // C=1, V=1, CM=0, VM=1
+ "c", // C=1, V=1, CM=1, VM=0
+ "c ov", // C=1, V=1, CM=1, VM=1
+};
+
+static const char *tp_condition_codes[4] =
+{
+ "bio",
+ "tc",
+ "ntc",
+ ""
+};
+
+
+static offs_t npc;
+static const UINT8 *rombase;
+static offs_t pcbase;
+
+static char *output;
+
+static void print(const char *fmt, ...)
+{
+ va_list vl;
+
+ va_start(vl, fmt);
+ output += vsprintf(output, fmt, vl);
+ va_end(vl);
+}
+
+static UINT16 FETCH(void)
+{
+ UINT16 result = rombase[(npc - pcbase) * 2 + 0] | (rombase[(npc - pcbase) * 2 + 1] << 8);
+ npc++;
+ return result;
+}
+
+static char *GET_ADDRESS(int addr_mode, int address)
+{
+ static char buffer[100];
+
+ if (addr_mode) // Indirect addressing
+ {
+ int nar = address & 0x7;
+
+
+ switch ((address >> 3) & 0xf)
+ {
+ case 0x0: sprintf(buffer, "*"); break;
+ case 0x1: sprintf(buffer, "*, ar%d", nar); break;
+ case 0x2: sprintf(buffer, "*-"); break;
+ case 0x3: sprintf(buffer, "*-, ar%d", nar); break;
+ case 0x4: sprintf(buffer, "*+"); break;
+ case 0x5: sprintf(buffer, "*+, ar%d", nar); break;
+ case 0x8: sprintf(buffer, "*br0-"); break;
+ case 0x9: sprintf(buffer, "*br0-, ar%d", nar); break;
+ case 0xa: sprintf(buffer, "*0-"); break;
+ case 0xb: sprintf(buffer, "*0-, ar%d", nar); break;
+ case 0xc: sprintf(buffer, "*0+"); break;
+ case 0xd: sprintf(buffer, "*0+, ar%d", nar); break;
+ case 0xe: sprintf(buffer, "*br0+"); break;
+ case 0xf: sprintf(buffer, "*br0+, ar%d", nar); break;
+
+ default: sprintf(buffer, "??? (indirect)"); break;
+ }
+ }
+ else // Direct addressing
+ {
+ sprintf(buffer, "#%02X", address);
+ }
+ return buffer;
+}
+
+static char *GET_SHIFT(int shift)
+{
+ static char buffer[100];
+
+ if (shift > 0)
+ {
+ sprintf(buffer, ", %d", shift);
+ }
+ else
+ {
+ memset(buffer, 0, sizeof(buffer));
+ }
+
+ return buffer;
+}
+
+void dasm_group_be(UINT16 opcode)
+{
+ int subop = opcode & 0xff;
+
+ switch (subop)
+ {
+ case 0x00: print("abs"); break;
+ case 0x01: print("cmpl"); break;
+ case 0x02: print("neg"); break;
+ case 0x03: print("pac"); break;
+ case 0x04: print("apac"); break;
+ case 0x05: print("spac"); break;
+ case 0x09: print("sfl"); break;
+ case 0x0a: print("sfr"); break;
+ case 0x0c: print("rol"); break;
+ case 0x0d: print("ror"); break;
+ case 0x10: print("addb"); break;
+ case 0x11: print("adcb"); break;
+ case 0x12: print("andb"); break;
+ case 0x13: print("orb"); break;
+ case 0x14: print("rolb"); break;
+ case 0x15: print("rorb"); break;
+ case 0x16: print("sflb"); break;
+ case 0x17: print("sfrb"); break;
+ case 0x18: print("sbb"); break;
+ case 0x19: print("sbbb"); break;
+ case 0x1a: print("xorb"); break;
+ case 0x1b: print("crgt"); break;
+ case 0x1c: print("crlt"); break;
+ case 0x1d: print("exar"); break;
+ case 0x1e: print("sacb"); break;
+ case 0x1f: print("lacb"); break;
+ case 0x20: print("bacc"); break;
+ case 0x21: print("baccd"); break;
+ case 0x22: print("idle"); break;
+ case 0x23: print("idle2"); break;
+ case 0x30: print("cala"); break;
+ case 0x32: print("pop"); break;
+ case 0x38: print("reti"); break;
+ case 0x3a: print("rete"); break;
+ case 0x3c: print("push"); break;
+ case 0x3d: print("calad"); break;
+ case 0x40: print("clrc intm"); break;
+ case 0x41: print("setc intm"); break;
+ case 0x42: print("clrc ovm"); break;
+ case 0x43: print("setc ovm"); break;
+ case 0x44: print("clrc cnf"); break;
+ case 0x45: print("setc cnf"); break;
+ case 0x46: print("clrc sxm"); break;
+ case 0x47: print("setc sxm"); break;
+ case 0x48: print("clrc hold"); break;
+ case 0x49: print("setc hold"); break;
+ case 0x4a: print("clrc tc"); break;
+ case 0x4b: print("setc tc"); break;
+ case 0x4c: print("clrc xf"); break;
+ case 0x4d: print("setc xf"); break;
+ case 0x4e: print("clrc carry"); break;
+ case 0x4f: print("setc carry"); break;
+ case 0x51: print("trap"); break;
+ case 0x52: print("nmi"); break;
+ case 0x58: print("zpr"); break;
+ case 0x59: print("zap"); break;
+ case 0x5a: print("sath"); break;
+ case 0x5b: print("satl"); break;
+ 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:
+ 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:
+ print("intr %d", opcode & 0x1f); break;
+
+ case 0x80: print("mpy #%04X", FETCH()); break;
+ case 0x81: print("and #%04X", FETCH() << 16); break;
+ case 0x82: print("or #%04X", FETCH() << 16); break;
+ case 0x83: print("xor #%04X", FETCH() << 16); break;
+ case 0xc4: print("rpt #%04X", FETCH()); break;
+ case 0xc5: print("rpt #%04X", FETCH()); break;
+ case 0xc6: print("rpt #%04X", FETCH()); break;
+
+ default: print("??? (group be)"); break;
+ }
+}
+
+static void dasm_group_bf(UINT16 opcode)
+{
+ int subop = (opcode >> 4) & 0xf;
+ int shift = opcode & 0xf;
+
+ switch (subop)
+ {
+ case 0x0:
+ {
+ if (opcode & 0x8)
+ {
+ print("lar ar%d, #%04X", opcode & 0x7, FETCH());
+ }
+ else
+ {
+ print("spm #%02X", opcode & 0x3);
+ }
+ break;
+ }
+
+ case 0x4:
+ {
+ switch (opcode & 0x3)
+ {
+ case 0: print("cmpr ar = arcr"); break;
+ case 1: print("cmpr ar < arcr"); break;
+ case 2: print("cmpr ar > arcr"); break;
+ case 3: print("cmpr ar != arcr"); break;
+ }
+ break;
+ }
+
+ case 0x8: print("lacc #%04X", FETCH() << shift); break;
+ case 0x9: print("add #%04X", FETCH() << shift); break;
+ case 0xa: print("sub #%04X", FETCH() << shift); break;
+ case 0xb: print("and #%04X", FETCH() << shift); break;
+ case 0xc: print("or #%04X", FETCH() << shift); break;
+ case 0xd: print("xor #%04X", FETCH() << shift); break;
+ case 0xe: print("bsar %d", shift+1); break;
+
+ default: print("??? (group bf)"); break;
+ }
+}
+
+offs_t tms32051_dasm(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram)
+{
+ UINT32 flags = 0;
+ UINT16 opcode;
+ int baseop;
+ int address, addr_mode;
+
+ pcbase = pc;
+ rombase = oprom;
+ npc = pc;
+ output = buffer;
+
+ opcode = FETCH();
+ baseop = (opcode >> 8) & 0xff;
+
+ addr_mode = (opcode >> 7) & 0x1;
+ address = opcode & 0x7f;
+
+ switch (baseop)
+ {
+ case 0x00: case 0x01: case 0x02: case 0x03:
+ case 0x04: case 0x05: case 0x06: case 0x07:
+ {
+ print("lar ar%d, %s", (opcode >> 8) & 0x7, GET_ADDRESS(addr_mode, address));
+ break;
+ }
+ case 0x08: print("lamm %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x09: print("smmr %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x0a: print("subc %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x0b: print("rpt %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x0c: print("out %s, #%04X", GET_ADDRESS(addr_mode, address), FETCH()); break;
+ case 0x0d: print("ldp %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x0e: print("lst 0, %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x0f: print("lst 1, %s", GET_ADDRESS(addr_mode, address)); break;
+
+ 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:
+ {
+ print("lacc %s %s", GET_ADDRESS(addr_mode, address), GET_SHIFT((opcode >> 8) & 0xf));
+ break;
+ }
+
+ case 0x20: 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:
+ {
+ print("add %s %s", GET_ADDRESS(addr_mode, address), GET_SHIFT((opcode >> 8) & 0xf));
+ break;
+ }
+
+ case 0x30: 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:
+ {
+ print("sub %s %s", GET_ADDRESS(addr_mode, address), GET_SHIFT((opcode >> 8) & 0xf));
+ break;
+ }
+
+ 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:
+ {
+ print("bit %d, %s", (opcode >> 8) & 0xf, GET_ADDRESS(addr_mode, address));
+ break;
+ }
+
+ case 0x50: print("mpya %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x51: print("mpys %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x52: print("sqra %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x53: print("sqrs %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x54: print("mpy %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x55: print("mpyu %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x57: print("bldp %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x58: print("xpl %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x59: print("opl %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x5a: print("apl %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x5b: print("cpl %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x5c: print("xpl %s, #%04X", GET_ADDRESS(addr_mode, address), FETCH()); break;
+ case 0x5d: print("opl %s, #%04X", GET_ADDRESS(addr_mode, address), FETCH()); break;
+ case 0x5e: print("apl %s, #%04X", GET_ADDRESS(addr_mode, address), FETCH()); break;
+ case 0x5f: print("cpl %s, #%04X", GET_ADDRESS(addr_mode, address), FETCH()); break;
+
+ case 0x60: print("addc %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x61: print("add %s << 16", GET_ADDRESS(addr_mode, address)); break;
+ case 0x62: print("adds %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x63: print("addt %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x64: print("subb %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x65: print("sub %s << 16", GET_ADDRESS(addr_mode, address)); break;
+ case 0x66: print("subs %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x67: print("subt %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x68: print("zalr %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x69: print("lacl %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x6a: print("lacc %s << 16", GET_ADDRESS(addr_mode, address)); break;
+ case 0x6b: print("lact %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x6c: print("xor %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x6d: print("or %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x6e: print("and %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x6f: print("bitt %s", GET_ADDRESS(addr_mode, address)); break;
+
+ case 0x70: print("lta %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x71: print("ltp %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x72: print("ltd %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x73: print("lt %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x74: print("lts %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x75: print("lph %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x76: print("pshd %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x77: print("dmov %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x78: print("adrk #%02X", opcode & 0xff); break;
+ case 0x79: print("b %04X, %s", FETCH(), GET_ADDRESS(1, address)); break;
+ case 0x7a: print("call %04X, %s", FETCH(), GET_ADDRESS(1, address)); flags = DASMFLAG_STEP_OVER; break;
+ case 0x7b: print("banz %04X, %s", FETCH(), GET_ADDRESS(1, address)); break;
+ case 0x7c: print("sbrk #%02X", opcode & 0xff); break;
+ case 0x7d: print("bd %04X, %s", FETCH(), GET_ADDRESS(1, address)); break;
+ case 0x7e: print("calld %04X, %s", FETCH(), GET_ADDRESS(1, address)); flags = DASMFLAG_STEP_OVER; break;
+ case 0x7f: print("banzd %04X, %s", FETCH(), GET_ADDRESS(1, address)); break;
+
+ case 0x80: case 0x81: case 0x82: case 0x83:
+ case 0x84: case 0x85: case 0x86: case 0x87:
+ {
+ print("sar ar%d, %s", (opcode >> 8) & 0x7, GET_ADDRESS(addr_mode, address));
+ break;
+ }
+ case 0x88: print("samm %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x89: print("lmmr %s, #%04X", GET_ADDRESS(addr_mode, address), FETCH()); break;
+ case 0x8a: print("popd %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x8b:
+ {
+ if ((opcode & 0xff) == 0)
+ {
+ print("nop");
+ }
+ else
+ {
+ print("mar %s", GET_ADDRESS(addr_mode, address));
+ }
+ break;
+ }
+ case 0x8c: print("spl %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x8d: print("sph %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x8e: print("sst 0, %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0x8f: print("sst 1, %s", GET_ADDRESS(addr_mode, address)); break;
+
+ case 0x90: case 0x91: case 0x92: case 0x93:
+ case 0x94: case 0x95: case 0x96: case 0x97:
+ {
+ print("sacl %s %s", GET_ADDRESS(addr_mode, address), GET_SHIFT((opcode >> 8) & 0x7));
+ break;
+ }
+ case 0x98: case 0x99: case 0x9a: case 0x9b:
+ case 0x9c: case 0x9d: case 0x9e: case 0x9f:
+ {
+ print("sach %s %s", GET_ADDRESS(addr_mode, address), GET_SHIFT((opcode >> 8) & 0x7));
+ break;
+ }
+
+ case 0xa0: print("norm %s, #%04X", GET_ADDRESS(addr_mode, address), FETCH()); break;
+ case 0xa2: print("mac %s, #%04X", GET_ADDRESS(addr_mode, address), FETCH()); break;
+ case 0xa3: print("macd %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0xa4: print("blpd %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0xa5: print("blpd %s, #%04X", GET_ADDRESS(addr_mode, address), FETCH()); break;
+ case 0xa6: print("tblr %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0xa7: print("tblw %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0xa8: print("bldd %s, #%04X", GET_ADDRESS(addr_mode, address), FETCH()); break;
+ case 0xa9: print("bldd %s, #%04X", GET_ADDRESS(addr_mode, address), FETCH()); break;
+ case 0xaa: print("mads %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0xab: print("madd %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0xac: print("bldd %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0xad: print("bldd %s", GET_ADDRESS(addr_mode, address)); break;
+ case 0xae: print("splk %s, #%04X", GET_ADDRESS(addr_mode, address), FETCH()); break;
+ case 0xaf: print("in %s, #%04X", GET_ADDRESS(addr_mode, address), FETCH()); break;
+
+ case 0xb0: case 0xb1: case 0xb2: case 0xb3:
+ case 0xb4: case 0xb5: case 0xb6: case 0xb7:
+ {
+ print("lar ar%d, #%02X", (opcode >> 8) & 0x7, opcode & 0xff);
+ break;
+ }
+ case 0xb8: print("add #%02X", opcode & 0xff); break;
+ case 0xb9: print("lacl #%02X", opcode & 0xff); break;
+ case 0xba: print("sub #%02X", opcode & 0xff); break;
+ case 0xbb: print("rpt #%02X", opcode & 0xff); break;
+
+ case 0xbc:
+ case 0xbd:
+ {
+ print("ldp #%03X", opcode & 0x1ff);
+ break;
+ }
+ case 0xbe: dasm_group_be(opcode); break;
+ case 0xbf: dasm_group_bf(opcode); break;
+
+ case 0xe0: case 0xe1: case 0xe2: case 0xe3:
+ {
+ int zlcvmask = opcode & 0xf;
+ int zlcv = (opcode >> 4) & 0xf;
+ int zl = (zlcv & 0xc) | ((zlcvmask >> 2) & 0x3);
+ int cv = ((zlcv << 2) & 0xc) | (zlcvmask & 0x3);
+ int tp = (opcode >> 8) & 0x3;
+
+ print("bcnd %04X", FETCH());
+
+ if (strlen(zl_condition_codes[zl]) > 0)
+ {
+ print(", %s", zl_condition_codes[zl]);
+ }
+ if (strlen(cv_condition_codes[cv]) > 0)
+ {
+ print(", %s", cv_condition_codes[cv]);
+ }
+ if (strlen(tp_condition_codes[tp]) > 0)
+ {
+ print(", %s", tp_condition_codes[tp]);
+ }
+ break;
+ }
+
+ case 0xe4: case 0xe5: case 0xe6: case 0xe7:
+ case 0xf4: case 0xf5: case 0xf6: case 0xf7:
+ {
+ int zlcvmask = opcode & 0xf;
+ int zlcv = (opcode >> 4) & 0xf;
+ int zl = (zlcv & 0xc) | ((zlcvmask >> 2) & 0x3);
+ int cv = ((zlcv << 2) & 0xc) | (zlcvmask & 0x3);
+ int tp = (opcode >> 8) & 0x3;
+ int n = ((opcode >> 12) & 0x1) + 1;
+
+ print("xc %d", n);
+
+ if (strlen(zl_condition_codes[zl]) > 0)
+ {
+ print(", %s", zl_condition_codes[zl]);
+ }
+ if (strlen(cv_condition_codes[cv]) > 0)
+ {
+ print(", %s", cv_condition_codes[cv]);
+ }
+ if (strlen(tp_condition_codes[tp]) > 0)
+ {
+ print(", %s", tp_condition_codes[tp]);
+ }
+ break;
+ }
+
+ case 0xe8: case 0xe9: case 0xea: case 0xeb:
+ {
+ int zlcvmask = opcode & 0xf;
+ int zlcv = (opcode >> 4) & 0xf;
+ int zl = (zlcv & 0xc) | ((zlcvmask >> 2) & 0x3);
+ int cv = ((zlcv << 2) & 0xc) | (zlcvmask & 0x3);
+ int tp = (opcode >> 8) & 0x3;
+
+ print("cc %04X", FETCH());
+
+ if (strlen(zl_condition_codes[zl]) > 0)
+ {
+ print(", %s", zl_condition_codes[zl]);
+ }
+ if (strlen(cv_condition_codes[cv]) > 0)
+ {
+ print(", %s", cv_condition_codes[cv]);
+ }
+ if (strlen(tp_condition_codes[tp]) > 0)
+ {
+ print(", %s", tp_condition_codes[tp]);
+ }
+ break;
+ }
+
+ case 0xec: case 0xed: case 0xee:
+ {
+ int zlcvmask = opcode & 0xf;
+ int zlcv = (opcode >> 4) & 0xf;
+ int zl = (zlcv & 0xc) | ((zlcvmask >> 2) & 0x3);
+ int cv = ((zlcv << 2) & 0xc) | (zlcvmask & 0x3);
+ int tp = (opcode >> 8) & 0x3;
+
+ print("retc ");
+
+ if (strlen(zl_condition_codes[zl]) > 0)
+ {
+ print(", %s", zl_condition_codes[zl]);
+ }
+ if (strlen(cv_condition_codes[cv]) > 0)
+ {
+ print(", %s", cv_condition_codes[cv]);
+ }
+ if (strlen(tp_condition_codes[tp]) > 0)
+ {
+ print(", %s", tp_condition_codes[tp]);
+ }
+ flags = DASMFLAG_STEP_OUT;
+ break;
+ }
+
+ case 0xef: print("ret"); flags = DASMFLAG_STEP_OUT; break;
+
+ case 0xf0: case 0xf1: case 0xf2: case 0xf3:
+ {
+ int zlcvmask = opcode & 0xf;
+ int zlcv = (opcode >> 4) & 0xf;
+ int zl = (zlcv & 0xc) | ((zlcvmask >> 2) & 0x3);
+ int cv = ((zlcv << 2) & 0xc) | (zlcvmask & 0x3);
+ int tp = (opcode >> 8) & 0x3;
+
+ print("bcndd %04X", FETCH());
+
+ if (strlen(zl_condition_codes[zl]) > 0)
+ {
+ print(", %s", zl_condition_codes[zl]);
+ }
+ if (strlen(cv_condition_codes[cv]) > 0)
+ {
+ print(", %s", cv_condition_codes[cv]);
+ }
+ if (strlen(tp_condition_codes[tp]) > 0)
+ {
+ print(", %s", tp_condition_codes[tp]);
+ }
+ break;
+ }
+
+ case 0xf8: case 0xf9: case 0xfa: case 0xfb:
+ {
+ int zlcvmask = opcode & 0xf;
+ int zlcv = (opcode >> 4) & 0xf;
+ int zl = (zlcv & 0xc) | ((zlcvmask >> 2) & 0x3);
+ int cv = ((zlcv << 2) & 0xc) | (zlcvmask & 0x3);
+ int tp = (opcode >> 8) & 0x3;
+
+ print("ccd %04X", FETCH());
+
+ if (strlen(zl_condition_codes[zl]) > 0)
+ {
+ print(", %s", zl_condition_codes[zl]);
+ }
+ if (strlen(cv_condition_codes[cv]) > 0)
+ {
+ print(", %s", cv_condition_codes[cv]);
+ }
+ if (strlen(tp_condition_codes[tp]) > 0)
+ {
+ print(", %s", tp_condition_codes[tp]);
+ }
+ break;
+ }
+
+ case 0xfc: case 0xfd: case 0xfe:
+ {
+ int zlcvmask = opcode & 0xf;
+ int zlcv = (opcode >> 4) & 0xf;
+ int zl = (zlcv & 0xc) | ((zlcvmask >> 2) & 0x3);
+ int cv = ((zlcv << 2) & 0xc) | (zlcvmask & 0x3);
+ int tp = (opcode >> 8) & 0x3;
+
+ print("retcd ");
+
+ if (strlen(zl_condition_codes[zl]) > 0)
+ {
+ print(", %s", zl_condition_codes[zl]);
+ }
+ if (strlen(cv_condition_codes[cv]) > 0)
+ {
+ print(", %s", cv_condition_codes[cv]);
+ }
+ if (strlen(tp_condition_codes[tp]) > 0)
+ {
+ print(", %s", tp_condition_codes[tp]);
+ }
+ flags = DASMFLAG_STEP_OUT;
+ break;
+ }
+
+ case 0xff: print("retd"); flags = DASMFLAG_STEP_OUT; break;
+
+ default: print("??? ($%04X)", opcode); break;
+ }
+
+ return (npc-pc) | flags | DASMFLAG_SUPPORTED;
+}