source/src/vm/v30.cpp

   1 /*
   2         Skelton for retropc emulator
   3
   4         Origin : MAME i286 core
   5         Author : Kyuma.Ohta <whatisthis.sowhat _at_ gmail.com>
   6         Date  : 2019.06.27-
   7         History: 2019.06.27 Split from i286.cpp.
   8
   9         [ NEC V30 ]
  10 */
  11
  12 #include "v30.h"
  13 #include "debugger.h"
  14 #include "i80x86_commondefs.h"
  15
  16 /* ----------------------------------------------------------------------------
  17         MAME i86
  18 ---------------------------------------------------------------------------- */
  19
  20 // Note:
  21 // API of bios_int_i86() / bios_caii_i86() has changed.
  22 // regs[8] regs[9] are added.These entries set redirect-address by PSEUDO-BIOS.
  23 // If need, will add more entries for cycle#.
  24 // - 20181126 K.O
  25
  26 #define cpu_state i8086_state
  27 #include "mame/emu/cpu/i86/v30.c"
  28 #include "mame/emu/cpu/nec/necdasm.c"
  29
  30
  31 void V30::initialize()
  32 {
  33         DEVICE::initialize();
  34         n_cpu_type = N_CPU_TYPE_V30;
  35         _HAS_i80286 = false;
  36         _HAS_v30 = true;
  37         opaque = CPU_INIT_CALL( v30 );
  38
  39         cpu_state *cpustate = (cpu_state *)opaque;
  40         cpustate->pic = d_pic;
  41         cpustate->program = d_mem;
  42         cpustate->io = d_io;
  43 //#ifdef I86_PSEUDO_BIOS
  44         cpustate->bios = d_bios;
  45 //#endif
  46 //#ifdef SINGLE_MODE_DMA
  47         cpustate->dma = d_dma;
  48 //#endif
  49         cpustate->emu = emu;
  50         cpustate->debugger = d_debugger;
  51         cpustate->program_stored = d_mem;
  52         cpustate->io_stored = d_io;
  53
  54         if(d_debugger != NULL) {
  55                 d_debugger->set_context_mem(d_mem);
  56                 d_debugger->set_context_io(d_io);
  57         }
  58 }
  59
  60 void V30::release()
  61 {
  62         free(opaque);
  63 }
  64 void V30::reset()
  65 {
  66         cpu_state *cpustate = (cpu_state *)opaque;
  67         int busreq = cpustate->busreq;
  68         int haltreq = cpustate->haltreq;
  69
  70         CPU_RESET_CALL( v30 );
  71
  72         cpustate->pic = d_pic;
  73         cpustate->program = d_mem;
  74         cpustate->io = d_io;
  75 //#ifdef I86_PSEUDO_BIOS
  76         cpustate->bios = d_bios;
  77 //#endif
  78 //#ifdef SINGLE_MODE_DMA
  79         cpustate->dma = d_dma;
  80 //#endif
  81 //#ifdef USE_DEBUGGER
  82         cpustate->emu = emu;
  83         cpustate->debugger = d_debugger;
  84         cpustate->program_stored = d_mem;
  85         cpustate->io_stored = d_io;
  86 //#endif
  87         cpustate->busreq = busreq;
  88         cpustate->haltreq = haltreq;
  89 }
  90
  91 int V30::run(int icount)
  92 {
  93         cpu_state *cpustate = (cpu_state *)opaque;
  94         int ret = 0;
  95         ret = CPU_EXECUTE_CALL( v30 );
  96         return ret;
  97 }
  98 // Belows are common to V30:: .
  99 //uint32_t V30::read_signal(int id)
 100 //void V30::write_signal(int id, uint32_t data, uint32_t mask)
 101 //void V30::set_intr_line(bool line, bool pending, uint32_t bit)
 102 //void V30::set_extra_clock(int icount)
 103 //int V30::get_extra_clock()
 104 //uint32_t V30::get_pc()
 105 //uint32_t V30::get_next_pc()
 106 //uint32_t V30::translate_address(int segment, uint32_t offset)
 107 //void V30::write_debug_data8(uint32_t addr, uint32_t data)
 108 //uint32_t V30::read_debug_data8(uint32_t addr)
 109 //void V30::write_debug_data16(uint32_t addr, uint32_t data)
 110 //uint32_t V30::read_debug_data16(uint32_t addr)
 111 //void V30::write_debug_io8(uint32_t addr, uint32_t data)
 112 //uint32_t V30::read_debug_io8(uint32_t addr) {
 113 //void V30::write_debug_io16(uint32_t addr, uint32_t data)
 114 //uint32_t V30::read_debug_io16(uint32_t addr) {
 115 //bool V30::write_debug_reg(const _TCHAR *reg, uint32_t data)
 116 //uint32_t V30::read_debug_reg(const _TCHAR *reg)
 117 //bool V30::get_debug_regs_info(_TCHAR *buffer, size_t buffer_len)
 118 int V30::debug_dasm_with_userdata(uint32_t pc, _TCHAR *buffer, size_t buffer_len, uint32_t userdata)
 119 {
 120         cpu_state *cpustate = (cpu_state *)opaque;
 121         UINT64 eip = pc - cpustate->base[CS];
 122         UINT8 ops[16];
 123         for(int i = 0; i < 16; i++) {
 124                 int wait;
 125                 ops[i] = d_mem->read_data8w(pc + i, &wait);
 126         }
 127         UINT8 *oprom = ops;
 128
 129         return CPU_DISASSEMBLE_CALL(nec_generic) & DASMFLAG_LENGTHMASK;
 130 }
 131