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r33647 Wednesday 3rd December, 2014 at 13:13:34 UTC by David Haywood
ok, we're definitely ARCompact based, it's a different instruction set (nw)
[src/emu/cpu]cpu.mak
[src/emu/cpu/arc]arcdasm.c
[src/emu/cpu/arcompact]arcompact.c* arcompact.h* arcompactdasm.c*
[src/mess]mess.mak
[src/mess/drivers]leapster.c

trunk/src/emu/cpu/arc/arcdasm.c
r242158r242159
11/*********************************\
22
3 ARCtangent (A4? A5?) disassembler
3 ARCtangent A4 disassembler
44
55\*********************************/
66
trunk/src/emu/cpu/arcompact/arcompact.c
r0r242159
1/*********************************\
2
3 ARCompact Core
4
5 The following procesors use the ARCompact instruction set
6
7  - ARCtangent-A5
8  - ARC 600
9  - ARC 700
10
11 (this is a skeleton core)
12
13 ARCompact is a 32-bit CPU that freely mixes 32-bit and 16-bit instructions
14 various user customizations could be made as with the ARC A4 based processors
15 these include custom instructions and registers.
16
17\*********************************/
18
19#include "emu.h"
20#include "debugger.h"
21#include "arcompact.h"
22
23
24const device_type ARCA5 = &device_creator<arcompact_device>;
25
26
27arcompact_device::arcompact_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
28   : cpu_device(mconfig, ARCA5, "ARCtangent-A5", tag, owner, clock, "arca5", __FILE__)
29   , m_program_config("program", ENDIANNESS_BIG, 32, 24, 0) // some docs describe these as 'middle endian'?!
30{
31}
32
33
34offs_t arcompact_device::disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options)
35{
36   extern CPU_DISASSEMBLE( arcompact );
37   return CPU_DISASSEMBLE_NAME(arcompact)(this, buffer, pc, oprom, opram, options);
38}
39
40
41/*****************************************************************************/
42
43/*****************************************************************************/
44
45void arcompact_device::unimplemented_opcode(UINT16 op)
46{
47   fatalerror("ARCOMPACT: unknown opcode %04x at %04x\n", op, m_pc << 2);
48}
49
50/*****************************************************************************/
51
52UINT16 arcompact_device::READ32(UINT32 address)
53{
54   return m_program->read_dword(address << 2);
55}
56
57void arcompact_device::WRITE32(UINT32 address, UINT32 data)
58{
59   m_program->write_dword(address << 2, data);
60}
61
62/*****************************************************************************/
63
64void arcompact_device::device_start()
65{
66   m_pc = 0;
67
68   m_debugger_temp = 0;
69
70   m_program = &space(AS_PROGRAM);
71
72   state_add( 0,  "PC", m_debugger_temp).callimport().callexport().formatstr("%08X");
73   state_add(STATE_GENPC, "GENPC", m_debugger_temp).callexport().noshow();
74
75   m_icountptr = &m_icount;
76}
77
78void arcompact_device::state_export(const device_state_entry &entry)
79{
80   switch (entry.index())
81   {
82      case 0:
83         m_debugger_temp = m_pc << 2;
84         break;
85
86      case STATE_GENPC:
87         m_debugger_temp = m_pc << 2;
88         break;
89   }
90}
91
92void arcompact_device::state_import(const device_state_entry &entry)
93{
94   switch (entry.index())
95   {
96      case 0:
97         m_pc = (m_debugger_temp & 0xfffffffc) >> 2;
98         break;
99   }
100}
101
102void arcompact_device::device_reset()
103{
104   m_pc = 0x00000000;
105}
106
107/*****************************************************************************/
108
109void arcompact_device::execute_set_input(int irqline, int state)
110{
111
112}
113
114
115void arcompact_device::execute_run()
116{
117   //UINT32 lres;
118   //lres = 0;
119
120   while (m_icount > 0)
121   {
122      debugger_instruction_hook(this, m_pc<<2);
123
124      //UINT32 op = READ32(m_pc);
125
126      m_pc++;
127
128      m_icount--;
129   }
130
131}
trunk/src/emu/cpu/arcompact/arcompact.h
r0r242159
1/*********************************\
2
3 ARCompact Core
4
5\*********************************/
6
7#pragma once
8
9#ifndef __ARCOMPACT_H__
10#define __ARCOMPACT_H__
11
12class arcompact_device : public cpu_device
13{
14public:
15   // construction/destruction
16   arcompact_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
17
18protected:
19   // device-level overrides
20   virtual void device_start();
21   virtual void device_reset();
22
23   // device_execute_interface overrides
24   virtual UINT32 execute_min_cycles() const { return 5; }
25   virtual UINT32 execute_max_cycles() const { return 5; }
26   virtual UINT32 execute_input_lines() const { return 0; }
27   virtual void execute_run();
28   virtual void execute_set_input(int inputnum, int state);
29
30   // device_memory_interface overrides
31   virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const { return (spacenum == AS_PROGRAM) ? &m_program_config : NULL; }
32
33   // device_state_interface overrides
34   virtual void state_import(const device_state_entry &entry);
35   virtual void state_export(const device_state_entry &entry);
36
37   // device_disasm_interface overrides
38   virtual UINT32 disasm_min_opcode_bytes() const { return 2; }
39   virtual UINT32 disasm_max_opcode_bytes() const { return 4; }
40   virtual offs_t disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options);
41
42private:
43   address_space_config m_program_config;
44
45   UINT32 m_pc;
46
47   address_space *m_program;
48   int m_icount;
49
50   UINT32 m_debugger_temp;
51
52   void unimplemented_opcode(UINT16 op);
53   inline UINT16 READ32(UINT32 address);
54   inline void WRITE32(UINT32 address, UINT32 data);
55};
56
57
58extern const device_type ARCA5;
59
60
61#endif /* __ARCOMPACT_H__ */
trunk/src/emu/cpu/arcompact/arcompactdasm.c
r0r242159
1/*********************************\
2
3 ARCompact disassembler
4
5\*********************************/
6
7#include "emu.h"
8#include <stdarg.h>
9
10static char *output;
11
12static void ATTR_PRINTF(1,2) print(const char *fmt, ...)
13{
14   va_list vl;
15
16   va_start(vl, fmt);
17   vsprintf(output, fmt, vl);
18   va_end(vl);
19}
20
21/*****************************************************************************/
22
23
24
25/*****************************************************************************/
26
27
28
29CPU_DISASSEMBLE(arcompact)
30{
31   UINT32 op = oprom[0] | (oprom[1] << 8) | (oprom[2] << 16) | (oprom[3] << 24);
32   op = BIG_ENDIANIZE_INT32(op);
33
34   output = buffer;
35
36   print("<undefined>");
37
38   return 4 | DASMFLAG_SUPPORTED;
39}
trunk/src/emu/cpu/cpu.mak
r242158r242159
9494         $(CPUSRC)/arc/arc.h
9595
9696#-------------------------------------------------
97# ARcompact (ARCtangent-A5, ARC 600, ARC 700)
98#@src/emu/cpu/arc/arc.h,CPUS += ARCOMPACT
99#-------------------------------------------------
100
101ifneq ($(filter ARCOMPACT,$(CPUS)),)
102OBJDIRS += $(CPUOBJ)/arcompact
103CPUOBJS += $(CPUOBJ)/arcompact/arcompact.o
104DASMOBJS += $(CPUOBJ)/arcompact/arcompactdasm.o
105endif
106
107$(CPUOBJ)/arcompact/arcompact.o:  $(CPUSRC)/arcompact/arcompact.c \
108         $(CPUSRC)/arcompact/arcompact.h
109
110#-------------------------------------------------
97111# Acorn ARM series
98112#
99113#@src/emu/cpu/arm/arm.h,CPUS += ARM
trunk/src/mess/drivers/leapster.c
r242158r242159
207207#include "emu.h"
208208#include "bus/generic/slot.h"
209209#include "bus/generic/carts.h"
210#include "cpu/arc/arc.h"
210#include "cpu/arcompact/arcompact.h"
211211
212212
213213class leapster_state : public driver_device
r242158r242159
270270
271271static MACHINE_CONFIG_START( leapster, leapster_state )
272272   /* basic machine hardware */
273   // CPU is ArcTangent A5
274   MCFG_CPU_ADD("maincpu", ARC, 96000000/10)
273   // CPU is ArcTangent-A5 '5.1' (ARCompact core)
274   MCFG_CPU_ADD("maincpu", ARCA5, 96000000/10)
275275   MCFG_CPU_PROGRAM_MAP(leapster_map)
276276
277277
trunk/src/mess/mess.mak
r242158r242159
133133CPUS += ALTO2
134134#CPUS += W65816
135135CPUS += ARC
136CPUS += ARCOMPACT
136137
137138#-------------------------------------------------
138139# specify available sound cores; some of these are

https://github.com/mamedev/mame/commit/0717756294b1e4d18dd7854ec2bb67e965a94692

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