summaryrefslogtreecommitdiffstatshomepage
path: root/trunk/src/emu/cpu/tms57002/57002dsm.c
diff options
context:
space:
mode:
Diffstat (limited to 'trunk/src/emu/cpu/tms57002/57002dsm.c')
-rw-r--r--trunk/src/emu/cpu/tms57002/57002dsm.c133
1 files changed, 133 insertions, 0 deletions
diff --git a/trunk/src/emu/cpu/tms57002/57002dsm.c b/trunk/src/emu/cpu/tms57002/57002dsm.c
new file mode 100644
index 00000000000..c649e96900d
--- /dev/null
+++ b/trunk/src/emu/cpu/tms57002/57002dsm.c
@@ -0,0 +1,133 @@
+/***************************************************************************
+
+ 57002dsm.c
+
+ TMS57002 "DASP" emulator.
+
+****************************************************************************
+
+ Copyright Olivier Galibert
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ * Neither the name 'MAME' nor the names of its contributors may be
+ used to endorse or promote products derived from this software
+ without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
+ IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
+ INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+
+***************************************************************************/
+
+#include "emu.h"
+#include "debugger.h"
+#include "tms57002.h"
+
+const char *tms57002_device::get_memadr(UINT32 opcode, char type)
+{
+ static char buff[2][10];
+ static int index = 0;
+ char *buf;
+
+ index = 1-index;
+ buf = buff[index];
+
+ if(((opcode & 0x400) && (type == 'c')) || (!(opcode & 0x400) && (type == 'd'))) {
+ if(opcode & 0x100)
+ sprintf(buf, "%c(%02x)", type, opcode & 0xff);
+ else if(opcode & 0x80)
+ sprintf(buf, "%c*+", type);
+ else
+ sprintf(buf, "%c*", type);
+ } else if(opcode & 0x200)
+ sprintf(buf, "%c*+", type);
+ else
+ sprintf(buf, "%c*", type);
+ return buf;
+}
+
+UINT32 tms57002_device::disasm_min_opcode_bytes() const
+{
+ return 4;
+}
+
+UINT32 tms57002_device::disasm_max_opcode_bytes() const
+{
+ return 4;
+}
+
+offs_t tms57002_device::disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options)
+{
+ UINT32 opcode = opram[0] | (opram[1] << 8) | (opram[2] << 16);
+ UINT8 fa = opcode >> 18;
+ char *buf = buffer;
+ if(fa == 0x3f) {
+ switch((opcode >> 11) & 0x7f) { // category 3
+
+#define DASM3
+#include "cpu/tms57002/tms57002.inc"
+#undef DASM3
+
+ default:
+ sprintf(buf, "unk c3 %02x", (opcode >> 11) & 0x7f);
+ break;
+ }
+ } else {
+ switch(fa) { // category 1
+ case 0x00:
+ buf[0] = 0;
+ break;
+
+#define DASM1
+#include "cpu/tms57002/tms57002.inc"
+#undef DASM1
+
+ default:
+ sprintf(buf, "unk c1 %02x", fa);
+ break;
+ }
+
+ buf += strlen(buf);
+ if(buf != buffer) {
+ strcpy(buf, " ; ");
+ buf += 3;
+ }
+
+ switch((opcode >> 11) & 0x7f) { // category 2
+ case 0x00:
+ if(buf != buffer)
+ buf[-3] = 0;
+ else
+ sprintf(buf, "nop");
+ break;
+
+#define DASM2
+#include "cpu/tms57002/tms57002.inc"
+#undef DASM2
+
+ default:
+ sprintf(buf, "unk c2 %02x", (opcode >> 11) & 0x7f);
+ break;
+ }
+ }
+
+ return 1;
+}