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g65816: WDM is a 2-byte opcode per WDC docs, added WDM callback. [R. Belmont]

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This commit is contained in:
arbee 2019-02-02 19:48:10 -05:00
parent 13676f9905
commit 55ead0c997
4 changed files with 13 additions and 2 deletions
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7
src/devices/cpu/g65816/g65816.cpp
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@ -17,6 +17,10 @@ All rights reserved.
/* /*
Changes: Changes:
1.02 (2019-02-02):
R. Belmont
- Corrected WDM to take 2 bytes and added callback
1.01 (2010-04-04): 1.01 (2010-04-04):
Angelo Salese Angelo Salese
- Added boundary checks for MVP and MVN in M mode. - Added boundary checks for MVP and MVN in M mode.
@ -115,6 +119,7 @@ g65816_device::g65816_device(const machine_config &mconfig, device_type type, co
, m_data_config("data", ENDIANNESS_LITTLE, 8, 24, 0, internal) , m_data_config("data", ENDIANNESS_LITTLE, 8, 24, 0, internal)
, m_opcode_config("opcodes", ENDIANNESS_LITTLE, 8, 24, 0, internal) , m_opcode_config("opcodes", ENDIANNESS_LITTLE, 8, 24, 0, internal)
, m_vector_config("vectors", ENDIANNESS_LITTLE, 8, 5, 0) , m_vector_config("vectors", ENDIANNESS_LITTLE, 8, 5, 0)
, m_wdm_w(*this)
, m_cpu_type(cpu_type) , m_cpu_type(cpu_type)
{ {
} }
@ -860,6 +865,8 @@ void g65816_device::device_start()
m_program_cache = program_space.cache<0, 0, ENDIANNESS_LITTLE>(); m_program_cache = program_space.cache<0, 0, ENDIANNESS_LITTLE>();
m_opcode_cache = (has_space(AS_OPCODES) ? space(AS_OPCODES) : program_space).cache<0, 0, ENDIANNESS_LITTLE>(); m_opcode_cache = (has_space(AS_OPCODES) ? space(AS_OPCODES) : program_space).cache<0, 0, ENDIANNESS_LITTLE>();
m_wdm_w.resolve_safe();
save_item(NAME(m_a)); save_item(NAME(m_a));
save_item(NAME(m_b)); save_item(NAME(m_b));
save_item(NAME(m_x)); save_item(NAME(m_x));

3
src/devices/cpu/g65816/g65816.h
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@ -56,6 +56,8 @@ public:
// construction/destruction // construction/destruction
g65816_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); g65816_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
auto wdm_handler() { return m_wdm_w.bind(); }
protected: protected:
/* Registers - used by g65816_set_reg() and g65816_get_reg() */ /* Registers - used by g65816_set_reg() and g65816_get_reg() */
enum enum
@ -96,6 +98,7 @@ protected:
address_space_config m_data_config; address_space_config m_data_config;
address_space_config m_opcode_config; address_space_config m_opcode_config;
address_space_config m_vector_config; address_space_config m_vector_config;
devcb_write8 m_wdm_w; /* WDM callback */
typedef void (g65816_device::*opcode_func) (); typedef void (g65816_device::*opcode_func) ();
typedef unsigned (g65816_device::*get_reg_func)(int regnum); typedef unsigned (g65816_device::*get_reg_func)(int regnum);

2
src/devices/cpu/g65816/g65816ds.cpp
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@ -101,7 +101,7 @@ const g65816_disassembler::opcode_struct g65816_disassembler::s_opcodes[256] =
{op::BIT, M, DX }, {op::AND, M, DX }, {op::ROL, M, DX }, {op::AND, M, DLIY}, {op::BIT, M, DX }, {op::AND, M, DX }, {op::ROL, M, DX }, {op::AND, M, DLIY},
{op::SEC, I, IMP }, {op::AND, M, AY }, {op::DEA, I, IMP }, {op::TSC, I, IMP }, {op::SEC, I, IMP }, {op::AND, M, AY }, {op::DEA, I, IMP }, {op::TSC, I, IMP },
{op::BIT, M, AX }, {op::AND, M, AX }, {op::ROL, M, AX }, {op::AND, M, ALX }, {op::BIT, M, AX }, {op::AND, M, AX }, {op::ROL, M, AX }, {op::AND, M, ALX },
{op::RTI, I, IMP }, {op::EOR, M, DXI }, {op::WDM, I, IMP }, {op::EOR, M, S }, {op::RTI, I, IMP }, {op::EOR, M, DXI }, {op::WDM, I, SIG }, {op::EOR, M, S },
{op::MVP, I, MVP }, {op::EOR, M, D }, {op::LSR, M, D }, {op::EOR, M, DLI }, {op::MVP, I, MVP }, {op::EOR, M, D }, {op::LSR, M, D }, {op::EOR, M, DLI },
{op::PHA, I, IMP }, {op::EOR, M, IMM }, {op::LSR, M, ACC }, {op::PHK, I, IMP }, {op::PHA, I, IMP }, {op::EOR, M, IMM }, {op::LSR, M, ACC }, {op::PHK, I, IMP },
{op::JMP, I, A }, {op::EOR, M, A }, {op::LSR, M, A }, {op::EOR, M, AL }, {op::JMP, I, A }, {op::EOR, M, A }, {op::LSR, M, A }, {op::EOR, M, AL },

3
src/devices/cpu/g65816/g65816op.h
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@ -1428,7 +1428,8 @@
#undef OP_WDM #undef OP_WDM
#define OP_WDM() \ #define OP_WDM() \
CLK(CLK_OP + CLK_IMPLIED); \ CLK(CLK_OP + CLK_IMPLIED); \
REGISTER_PC++ SRC = OPER_8_IMM(); \
m_wdm_w(SRC);
/* G65816 Exchange accum high and low bytes */ /* G65816 Exchange accum high and low bytes */
#undef OP_XBA #undef OP_XBA