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-rw-r--r--src/devices/cpu/i860/i860.cpp237
1 files changed, 237 insertions, 0 deletions
diff --git a/src/devices/cpu/i860/i860.cpp b/src/devices/cpu/i860/i860.cpp
new file mode 100644
index 00000000000..5023fa65c60
--- /dev/null
+++ b/src/devices/cpu/i860/i860.cpp
@@ -0,0 +1,237 @@
+// license:BSD-3-Clause
+// copyright-holders:Jason Eckhardt
+/***************************************************************************
+
+ i860.c
+
+ Interface file for the Intel i860 emulator.
+
+ Copyright (C) 1995-present Jason Eckhardt (jle@rice.edu)
+
+***************************************************************************/
+
+/*
+TODO: Separate out i860XR and i860XP (make different types, etc).
+ Hook IRQ lines into MAME core (they're custom functions atm).
+*/
+
+#include "emu.h"
+#include "debugger.h"
+#include "i860.h"
+
+
+/* Control register numbers. */
+enum {
+ CR_FIR = 0,
+ CR_PSR = 1,
+ CR_DIRBASE = 2,
+ CR_DB = 3,
+ CR_FSR = 4,
+ CR_EPSR = 5
+};
+
+
+const device_type I860 = &device_creator<i860_cpu_device>;
+
+
+i860_cpu_device::i860_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : cpu_device(mconfig, I860, "i860XR", tag, owner, clock, "i860xr", __FILE__)
+ , m_program_config("program", ENDIANNESS_LITTLE, 64, 32, 0)
+{
+}
+
+
+void i860_cpu_device::device_start()
+{
+ m_program = &space(AS_PROGRAM);
+ reset_i860();
+ i860_set_pin(DEC_PIN_BUS_HOLD, 0);
+ i860_set_pin(DEC_PIN_RESET, 0);
+ m_single_stepping = 0;
+
+ save_item(NAME(m_iregs));
+ save_item(NAME(m_cregs));
+ save_item(NAME(m_frg));
+ save_item(NAME(m_pc));
+
+ state_add( I860_PC, "PC", m_pc).formatstr("%08X");
+ state_add( I860_FIR, "FIR", m_cregs[CR_FIR]).formatstr("%08X");
+ state_add( I860_PSR, "PSR", m_cregs[CR_PSR]).formatstr("%08X");
+ state_add( I860_DIRBASE, "DIRBASE", m_cregs[CR_DIRBASE]).formatstr("%08X");
+ state_add( I860_DB, "DB", m_cregs[CR_DB]).formatstr("%08X");
+ state_add( I860_FSR, "FSR", m_cregs[CR_FSR]).formatstr("%08X");
+ state_add( I860_EPSR, "EPSR", m_cregs[CR_EPSR]).formatstr("%08X");
+ state_add( I860_R0, "R0", m_iregs[0]).formatstr("%08X");
+ state_add( I860_R1, "R1", m_iregs[1]).formatstr("%08X");
+ state_add( I860_R2, "R2", m_iregs[2]).formatstr("%08X");
+ state_add( I860_R3, "R3", m_iregs[3]).formatstr("%08X");
+ state_add( I860_R4, "R4", m_iregs[4]).formatstr("%08X");
+ state_add( I860_R5, "R5", m_iregs[5]).formatstr("%08X");
+ state_add( I860_R6, "R6", m_iregs[6]).formatstr("%08X");
+ state_add( I860_R7, "R7", m_iregs[7]).formatstr("%08X");
+ state_add( I860_R8, "R8", m_iregs[8]).formatstr("%08X");
+ state_add( I860_R9, "R9", m_iregs[9]).formatstr("%08X");
+ state_add( I860_R10, "R10", m_iregs[10]).formatstr("%08X");
+ state_add( I860_R11, "R11", m_iregs[11]).formatstr("%08X");
+ state_add( I860_R12, "R12", m_iregs[12]).formatstr("%08X");
+ state_add( I860_R13, "R13", m_iregs[13]).formatstr("%08X");
+ state_add( I860_R14, "R14", m_iregs[14]).formatstr("%08X");
+ state_add( I860_R15, "R15", m_iregs[15]).formatstr("%08X");
+ state_add( I860_R16, "R16", m_iregs[16]).formatstr("%08X");
+ state_add( I860_R17, "R17", m_iregs[17]).formatstr("%08X");
+ state_add( I860_R18, "R18", m_iregs[18]).formatstr("%08X");
+ state_add( I860_R19, "R19", m_iregs[19]).formatstr("%08X");
+ state_add( I860_R20, "R20", m_iregs[20]).formatstr("%08X");
+ state_add( I860_R21, "R21", m_iregs[21]).formatstr("%08X");
+ state_add( I860_R22, "R22", m_iregs[22]).formatstr("%08X");
+ state_add( I860_R23, "R23", m_iregs[23]).formatstr("%08X");
+ state_add( I860_R24, "R24", m_iregs[24]).formatstr("%08X");
+ state_add( I860_R25, "R25", m_iregs[25]).formatstr("%08X");
+ state_add( I860_R26, "R26", m_iregs[26]).formatstr("%08X");
+ state_add( I860_R27, "R27", m_iregs[27]).formatstr("%08X");
+ state_add( I860_R28, "R28", m_iregs[28]).formatstr("%08X");
+ state_add( I860_R29, "R29", m_iregs[29]).formatstr("%08X");
+ state_add( I860_R30, "R30", m_iregs[30]).formatstr("%08X");
+ state_add( I860_R31, "R31", m_iregs[31]).formatstr("%08X");
+
+ state_add( I860_F0, "F0", m_freg[0]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F1, "F1", m_freg[1]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F2, "F2", m_freg[2]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F3, "F3", m_freg[3]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F4, "F4", m_freg[4]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F5, "F5", m_freg[5]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F6, "F6", m_freg[6]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F7, "F7", m_freg[7]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F8, "F8", m_freg[8]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F9, "F9", m_freg[9]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F10, "F10", m_freg[10]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F11, "F11", m_freg[11]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F12, "F12", m_freg[12]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F13, "F13", m_freg[13]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F14, "F14", m_freg[14]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F15, "F15", m_freg[15]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F16, "F16", m_freg[16]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F17, "F17", m_freg[17]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F18, "F18", m_freg[18]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F19, "F19", m_freg[19]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F20, "F20", m_freg[20]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F21, "F21", m_freg[21]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F22, "F22", m_freg[22]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F23, "F23", m_freg[23]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F24, "F24", m_freg[24]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F25, "F25", m_freg[25]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F26, "F26", m_freg[26]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F27, "F27", m_freg[27]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F28, "F28", m_freg[28]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F29, "F29", m_freg[29]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F30, "F30", m_freg[30]).callimport().callexport().formatstr("%08X");
+ state_add( I860_F31, "F31", m_freg[31]).callimport().callexport().formatstr("%08X");
+
+ state_add(STATE_GENPC, "curpc", m_pc).noshow();
+
+ m_icountptr = &m_icount;
+}
+
+
+void i860_cpu_device::state_import(const device_state_entry &entry)
+{
+#define I860_SET_INFO_F(fnum) m_frg[0+(4*fnum)] = (m_freg[fnum] & 0x000000ff); \
+ m_frg[1+(4*fnum)] = (m_freg[fnum] & 0x0000ff00) >> 8; \
+ m_frg[2+(4*fnum)] = (m_freg[fnum] & 0x00ff0000) >> 16; \
+ m_frg[3+(4*fnum)] = (m_freg[fnum] & 0xff000000) >> 24;
+
+ switch (entry.index())
+ {
+ case I860_F0: I860_SET_INFO_F(0); break;
+ case I860_F1: I860_SET_INFO_F(1); break;
+ case I860_F2: I860_SET_INFO_F(2); break;
+ case I860_F3: I860_SET_INFO_F(3); break;
+ case I860_F4: I860_SET_INFO_F(4); break;
+ case I860_F5: I860_SET_INFO_F(5); break;
+ case I860_F6: I860_SET_INFO_F(6); break;
+ case I860_F7: I860_SET_INFO_F(7); break;
+ case I860_F8: I860_SET_INFO_F(8); break;
+ case I860_F9: I860_SET_INFO_F(9); break;
+ case I860_F10: I860_SET_INFO_F(10); break;
+ case I860_F11: I860_SET_INFO_F(11); break;
+ case I860_F12: I860_SET_INFO_F(12); break;
+ case I860_F13: I860_SET_INFO_F(13); break;
+ case I860_F14: I860_SET_INFO_F(14); break;
+ case I860_F15: I860_SET_INFO_F(15); break;
+ case I860_F16: I860_SET_INFO_F(16); break;
+ case I860_F17: I860_SET_INFO_F(17); break;
+ case I860_F18: I860_SET_INFO_F(18); break;
+ case I860_F19: I860_SET_INFO_F(19); break;
+ case I860_F20: I860_SET_INFO_F(20); break;
+ case I860_F21: I860_SET_INFO_F(21); break;
+ case I860_F22: I860_SET_INFO_F(22); break;
+ case I860_F23: I860_SET_INFO_F(23); break;
+ case I860_F24: I860_SET_INFO_F(24); break;
+ case I860_F25: I860_SET_INFO_F(25); break;
+ case I860_F26: I860_SET_INFO_F(26); break;
+ case I860_F27: I860_SET_INFO_F(27); break;
+ case I860_F28: I860_SET_INFO_F(28); break;
+ case I860_F29: I860_SET_INFO_F(29); break;
+ case I860_F30: I860_SET_INFO_F(30); break;
+ case I860_F31: I860_SET_INFO_F(31); break;
+ }
+}
+
+void i860_cpu_device::state_export(const device_state_entry &entry)
+{
+#define I860_GET_INFO_F(fnum) m_freg[fnum] = m_frg[0+(4*fnum)] | ( m_frg[1+(4*fnum)] << 8 ) | ( m_frg[2+(4*fnum)] << 16 ) | ( m_frg[3+(4*fnum)] << 24)
+
+ switch (entry.index())
+ {
+ case I860_F0: I860_GET_INFO_F(0); break;
+ case I860_F1: I860_GET_INFO_F(1); break;
+ case I860_F2: I860_GET_INFO_F(2); break;
+ case I860_F3: I860_GET_INFO_F(3); break;
+ case I860_F4: I860_GET_INFO_F(4); break;
+ case I860_F5: I860_GET_INFO_F(5); break;
+ case I860_F6: I860_GET_INFO_F(6); break;
+ case I860_F7: I860_GET_INFO_F(7); break;
+ case I860_F8: I860_GET_INFO_F(8); break;
+ case I860_F9: I860_GET_INFO_F(9); break;
+ case I860_F10: I860_GET_INFO_F(10); break;
+ case I860_F11: I860_GET_INFO_F(11); break;
+ case I860_F12: I860_GET_INFO_F(12); break;
+ case I860_F13: I860_GET_INFO_F(13); break;
+ case I860_F14: I860_GET_INFO_F(14); break;
+ case I860_F15: I860_GET_INFO_F(15); break;
+ case I860_F16: I860_GET_INFO_F(16); break;
+ case I860_F17: I860_GET_INFO_F(17); break;
+ case I860_F18: I860_GET_INFO_F(18); break;
+ case I860_F19: I860_GET_INFO_F(19); break;
+ case I860_F20: I860_GET_INFO_F(20); break;
+ case I860_F21: I860_GET_INFO_F(21); break;
+ case I860_F22: I860_GET_INFO_F(22); break;
+ case I860_F23: I860_GET_INFO_F(23); break;
+ case I860_F24: I860_GET_INFO_F(24); break;
+ case I860_F25: I860_GET_INFO_F(25); break;
+ case I860_F26: I860_GET_INFO_F(26); break;
+ case I860_F27: I860_GET_INFO_F(27); break;
+ case I860_F28: I860_GET_INFO_F(28); break;
+ case I860_F29: I860_GET_INFO_F(29); break;
+ case I860_F30: I860_GET_INFO_F(30); break;
+ case I860_F31: I860_GET_INFO_F(31); break;
+ }
+}
+
+void i860_cpu_device::device_reset()
+{
+ reset_i860();
+}
+
+
+offs_t i860_cpu_device::disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options)
+{
+ extern CPU_DISASSEMBLE( i860 );
+ return CPU_DISASSEMBLE_NAME(i860)(this, buffer, pc, oprom, opram, options);
+}
+
+
+/**************************************************************************
+ * The actual decode and execute code.
+ **************************************************************************/
+#include "i860dec.inc"