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Diffstat (limited to 'trunk/src/emu/cpu/tms57002/tms57kdec.c')
-rw-r--r--trunk/src/emu/cpu/tms57002/tms57kdec.c178
1 files changed, 178 insertions, 0 deletions
diff --git a/trunk/src/emu/cpu/tms57002/tms57kdec.c b/trunk/src/emu/cpu/tms57002/tms57kdec.c
new file mode 100644
index 00000000000..12b5efe76af
--- /dev/null
+++ b/trunk/src/emu/cpu/tms57002/tms57kdec.c
@@ -0,0 +1,178 @@
+/***************************************************************************
+
+ tms57kdec.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"
+
+inline int tms57002_device::xmode(UINT32 opcode, char type)
+{
+ if(((opcode & 0x400) && (type == 'c')) || (!(opcode & 0x400) && (type == 'd'))) {
+ if(opcode & 0x100)
+ return 0;
+ else if(opcode & 0x80)
+ return 2;
+ else
+ return 1;
+ } else if(opcode & 0x200)
+ return 2;
+
+ return 1;
+}
+
+inline int tms57002_device::sfao(UINT32 st1)
+{
+ return st1 & ST1_SFAO ? 1 : 0;
+}
+
+inline int tms57002_device::dbp(UINT32 st1)
+{
+ return st1 & ST1_DBP ? 1 : 0;
+}
+
+inline int tms57002_device::crm(UINT32 st1)
+{
+ return (st1 & ST1_CRM) >> ST1_CRM_SHIFT;
+}
+
+inline int tms57002_device::sfai(UINT32 st1)
+{
+ return st1 & ST1_SFAI ? 1 : 0;
+}
+
+inline int tms57002_device::sfmo(UINT32 st1)
+{
+ return (st1 & ST1_SFMO) >> ST1_SFMO_SHIFT;
+}
+
+inline int tms57002_device::rnd(UINT32 st1)
+{
+ return (st1 & ST1_RND) >> ST1_RND_SHIFT;
+}
+
+inline int tms57002_device::movm(UINT32 st1)
+{
+ return st1 & ST1_MOVM ? 1 : 0;
+}
+
+inline int tms57002_device::sfma(UINT32 st1)
+{
+ return (st1 & ST1_SFMA) >> ST1_SFMA_SHIFT;
+}
+
+void tms57002_device::decode_error(UINT32 opcode)
+{
+ char buf[256];
+ UINT8 opr[3];
+ if(unsupported_inst_warning)
+ return;
+
+ unsupported_inst_warning = 1;
+ opr[0] = opcode;
+ opr[1] = opcode >> 8;
+ opr[2] = opcode >> 16;
+
+ disasm_disassemble(buf, pc, opr, opr, 0);
+ popmessage("tms57002: %s - Contact Mamedev", buf);
+}
+
+void tms57002_device::decode_cat1(UINT32 opcode, unsigned short *op, cstate *cs)
+{
+ switch(opcode >> 18) {
+ case 0x00: // nop
+ break;
+
+#define CDEC1
+#include "cpu/tms57002/tms57002.inc"
+#undef CDEC1
+
+ default:
+ decode_error(opcode);
+ break;
+ }
+}
+
+void tms57002_device::decode_cat2_pre(UINT32 opcode, unsigned short *op, cstate *cs)
+{
+ switch((opcode >> 11) & 0x7f) {
+ case 0x00: // nop
+ break;
+
+#define CDEC2A
+#include "cpu/tms57002/tms57002.inc"
+#undef CDEC2A
+
+ default:
+ decode_error(opcode);
+ break;
+ }
+}
+
+void tms57002_device::decode_cat2_post(UINT32 opcode, unsigned short *op, cstate *cs)
+{
+ switch((opcode >> 11) & 0x7f) {
+ case 0x00: // nop
+ break;
+
+#define CDEC2B
+#include "cpu/tms57002/tms57002.inc"
+#undef CDEC2B
+
+ default:
+ decode_error(opcode);
+ break;
+ }
+}
+
+void tms57002_device::decode_cat3(UINT32 opcode, unsigned short *op, cstate *cs)
+{
+ switch((opcode >> 11) & 0x7f) {
+ case 0x00: // nop
+ break;
+
+#define CDEC3
+#include "cpu/tms57002/tms57002.inc"
+#undef CDEC3
+
+ default:
+ decode_error(opcode);
+ break;
+ }
+}
+