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r26051 Friday 8th November, 2013 at 11:47:28 UTC by Dirk Best
Get rid of UINT8 arrays of PROM data in the CPU context in favor of pointers to ROM regions defined in the driver using the alto2 CPU core.
[/branches/alto2/src/emu/cpu/alto2]a2disp.c alto2.c alto2.h
[/branches/alto2/src/mess/drivers]alto2.c

branches/alto2/src/emu/cpu/alto2/alto2.c
r26050r26051
206206   m_icountptr = &m_icount;
207207
208208   // reverse dwords and invert hardware specific bits
209   const UINT32 addrxor = 2 * (ALTO2_UCODE_PAGE_SIZE - 1);
210   UINT32* temp = auto_alloc_array(machine(), UINT32, 2 * ALTO2_UCODE_PAGE_SIZE);
211   UINT32 ucode;
209212   for (UINT32 addr = 0; addr < ALTO2_UCODE_PAGE_SIZE; addr++) {
210      UINT32 ucode = m_ucode->read_dword(4*addr);
211      ucode ^= ALTO2_UCODE_INVERTED;
212      m_ucode->write_dword(4*addr, ucode);
213      ucode = m_ucode->read_dword(2*addr ^ addrxor);
214      temp[addr] = ucode ^ ALTO2_UCODE_INVERTED;
215      ucode = m_ucode->read_dword(2*(ALTO2_UCODE_PAGE_SIZE+addr) ^ addrxor);
216      temp[ALTO2_UCODE_PAGE_SIZE+addr] = ucode ^ ALTO2_UCODE_INVERTED;
213217   }
214   for (UINT32 addr = ALTO2_UCODE_PAGE_SIZE; addr < 2*ALTO2_UCODE_PAGE_SIZE; addr++) {
215      UINT32 ucode = m_ucode->read_dword(4*addr);
216      ucode ^= ALTO2_UCODE_INVERTED;
217      m_ucode->write_dword(4*addr, ucode);
218   for (UINT32 addr = 0; addr < 2*ALTO2_UCODE_PAGE_SIZE; addr++) {
219      m_ucode->write_dword(2*addr, temp[addr]);
218220   }
219221
220   for (UINT32 addr = 0; addr < 256; addr++) {
221      printf("%02x: %04x\n", addr, m_const->read_word(addr));
222   }
223
224222   hard_reset();
225223}
226224
r26050r26051
19711969/** @brief reset the various registers */
19721970void alto2_cpu_device::hard_reset()
19731971{
1974   static const UINT8 ctl2k_u3[256] = {
1975      /* 0000 */ 000,000,013,016,012,016,014,016,000,001,013,016,012,016,016,016,
1976      /* 0020 */ 010,001,013,016,012,016,015,016,010,001,013,016,012,016,017,016,
1977      /* 0040 */ 004,001,013,017,012,017,014,017,004,001,013,017,012,017,016,017,
1978      /* 0060 */ 014,001,013,017,012,017,015,017,014,001,013,017,012,017,017,017,
1979      /* 0100 */ 002,001,013,016,012,016,014,016,002,001,013,016,012,016,016,016,
1980      /* 0120 */ 012,001,013,016,012,016,015,016,012,001,013,016,012,016,017,016,
1981      /* 0140 */ 006,001,013,017,012,017,014,017,006,013,013,017,012,017,016,017,
1982      /* 0160 */ 017,001,013,017,012,017,015,017,017,001,013,017,012,017,017,017,
1983      /* 0200 */ 011,001,013,016,012,016,014,016,011,016,013,016,012,016,016,016,
1984      /* 0220 */ 001,001,013,016,012,016,015,016,001,001,013,016,012,016,017,016,
1985      /* 0240 */ 005,001,013,017,012,017,014,017,005,013,013,017,012,017,016,017,
1986      /* 0260 */ 015,001,013,017,012,017,015,017,015,014,013,017,012,017,017,017,
1987      /* 0300 */ 003,001,013,016,012,016,014,016,003,001,013,016,012,016,016,016,
1988      /* 0320 */ 013,001,013,016,012,016,015,016,013,001,013,016,012,016,017,016,
1989      /* 0340 */ 007,001,013,017,012,017,014,017,007,001,013,017,012,017,016,017,
1990      /* 0360 */ 016,001,013,017,012,017,015,017,016,015,013,017,012,017,017,017
1991   };
1992   memcpy(m_ctl2k_u3, ctl2k_u3, sizeof(m_ctl2k_u3));
1972   UINT8* ctl2k = machine().root_device().memregion("2k_ctrl")->base();
1973   m_ctl2k_u3 = ctl2k;            // FIXME: region=2k_ctrl offset=00000
1974   m_ctl2k_u76 = ctl2k + 00400;   // FIXME: region=2k_ctrl offset=00400
1975   m_cram3k_a37 = ctl2k + 01000;   // FIXME: region=2k_ctrl offset=01000
1976   m_ctl2k_u38 = ctl2k + 01400;   // FIXME: region=2k_ctrl offset=01400
1977   m_alu_a10 = ctl2k + 01440;      // FIXME: region=2k_ctrl offset=01440
19931978
1994   static const UINT8 ctl2k_u38[32] = {
1995      /* 0000 */ 0367,0353,0323,0315,0265,0251,0221,0216,
1996      /* 0010 */ 0166,0152,0122,0114,0064,0050,0020,0017,
1997      /* 0020 */ 0000,0000,0000,0000,0000,0000,0000,0000,
1998      /* 0030 */ 0000,0000,0000,0000,0000,0000,0000,0000
1999   };
2000   memcpy(m_ctl2k_u38, ctl2k_u38, sizeof(m_ctl2k_u38));
1979   UINT8* memory = machine().root_device().memregion("memory")->base();
1980   m_madr_a32 = memory;         // FIXME: region=memory offset=00000
1981   m_madr_a64 = memory + 00400;   // FIXME: region=memory offset=00400
1982   m_madr_a65 = memory + 01000;   // FIXME: region=memory offset=01000
20011983
2002   static const UINT8 ctl2k_u76[256] = {
2003      /* 0000 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000,
2004      /* 0020 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000,
2005      /* 0040 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000,
2006      /* 0060 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000,
2007      /* 0100 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000,
2008      /* 0120 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000,
2009      /* 0140 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000,
2010      /* 0160 */ 000,014,000,000,000,000,000,000,014,000,000,000,000,000,000,000,
2011      /* 0200 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000,
2012      /* 0220 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000,
2013      /* 0240 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000,
2014      /* 0260 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000,
2015      /* 0300 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000,
2016      /* 0320 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000,
2017      /* 0340 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000,
2018      /* 0360 */ 000,014,000,000,000,000,000,000,000,014,000,000,000,000,000,000
2019   };
2020   memcpy(m_ctl2k_u76, ctl2k_u76, sizeof(m_ctl2k_u76));
1984   UINT8* displ = machine().root_device().memregion("displ")->base();
1985   m_disp_a38 = displ;            // FIXME: region=displ offset=00000
1986   m_disp_a66 = displ + 00400;      // FIXME: region=displ offset=00400
1987   m_disp_a63 = displ + 01000;      // FIXME: region=displ offset=01000
20211988
2022   static const UINT8 cram3k_a37[256] = {
2023      /* 0000 */ 000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,
2024      /* 0020 */ 000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,
2025      /* 0040 */ 000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,
2026      /* 0060 */ 000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,
2027      /* 0100 */ 014,014,014,014,014,014,014,014,014,014,014,014,014,014,014,014,
2028      /* 0120 */ 014,014,014,016,014,014,014,004,014,014,014,010,014,014,014,015,
2029      /* 0140 */ 015,015,015,015,015,015,015,015,015,015,015,015,015,015,015,015,
2030      /* 0160 */ 015,015,015,017,015,015,015,005,015,015,015,011,015,015,015,014,
2031      /* 0200 */ 000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,
2032      /* 0220 */ 000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,
2033      /* 0240 */ 000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,
2034      /* 0260 */ 000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,
2035      /* 0300 */ 014,014,014,014,014,014,014,014,014,014,014,014,014,014,014,014,
2036      /* 0320 */ 014,014,014,016,014,014,014,014,014,014,014,014,014,014,014,015,
2037      /* 0340 */ 015,015,015,015,015,015,015,015,015,015,015,015,015,015,015,015,
2038      /* 0360 */ 015,015,015,017,015,015,015,015,015,015,015,015,015,015,015,014
2039   };
2040   memcpy(m_cram3k_a37, cram3k_a37, sizeof(m_cram3k_a37));
1989   UINT8* ether = machine().root_device().memregion("ether")->base();
1990   m_ether_a41 = ether;         // FIXME: region=ether offset=00000
1991   m_ether_a42 = ether + 00400;   // FIXME: region=ether offset=00400
1992   m_ether_a49 = ether + 01000;   // FIXME: region=ether offset=01000
20411993
2042   static const UINT8 madr_a64[256] = {
2043      /* 0000 */ 004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,
2044      /* 0020 */ 004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,
2045      /* 0040 */ 004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,
2046      /* 0060 */ 004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,
2047      /* 0100 */ 004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,
2048      /* 0120 */ 004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,
2049      /* 0140 */ 004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,
2050      /* 0160 */ 004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,
2051      /* 0200 */ 004,004,004,004,004,004,000,000,004,004,004,004,004,004,004,004,
2052      /* 0220 */ 004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,004,
2053      /* 0240 */ 004,004,004,004,004,004,000,000,004,004,004,004,004,004,004,004,
2054      /* 0260 */ 004,004,004,004,004,004,004,014,004,004,004,004,004,005,004,004,
2055      /* 0300 */ 004,004,004,004,004,004,000,000,004,004,004,004,004,004,004,004,
2056      /* 0320 */ 004,004,004,004,004,004,006,006,004,004,004,004,004,004,004,004,
2057      /* 0340 */ 004,004,004,004,004,004,000,000,004,004,004,004,004,004,004,004,
2058      /* 0360 */ 004,004,004,004,004,004,004,004,004,004,004,004,004,005,004,004
2059   };
2060   memcpy(m_madr_a64, madr_a64, sizeof(m_madr_a64));
2061
2062   static const UINT8 madr_a65[256] = {
2063      /* 0000 */ 007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,
2064      /* 0020 */ 007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,
2065      /* 0040 */ 007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,
2066      /* 0060 */ 007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,
2067      /* 0100 */ 007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,
2068      /* 0120 */ 007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,
2069      /* 0140 */ 007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,
2070      /* 0160 */ 007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,
2071      /* 0200 */ 007,007,007,007,007,017,007,017,007,007,007,007,007,014,007,014,
2072      /* 0220 */ 007,007,007,007,007,015,007,015,007,007,007,007,007,013,007,016,
2073      /* 0240 */ 007,007,007,007,007,017,007,017,007,007,007,007,007,014,007,014,
2074      /* 0260 */ 007,007,007,007,007,007,007,007,007,007,007,007,007,011,007,016,
2075      /* 0300 */ 007,007,007,007,007,017,007,017,007,007,007,007,007,014,007,014,
2076      /* 0320 */ 007,007,007,007,007,007,007,007,007,007,007,007,007,012,007,016,
2077      /* 0340 */ 007,007,007,007,007,017,007,017,007,007,007,007,007,014,007,014,
2078      /* 0360 */ 007,007,007,007,007,007,007,007,007,007,007,007,007,010,007,016
2079   };
2080   memcpy(m_madr_a65, madr_a65, sizeof(m_madr_a65));
2081
20821994   /* all tasks start in ROM0 */
20831995   m_reset_mode = 0xffff;
20841996
branches/alto2/src/emu/cpu/alto2/a2disp.c
r26050r26051
439439{
440440   int y;
441441
442   UINT8 disp_a38[256] = {
443      /* 0000 */ 003,013,015,013,015,013,017,013,015,013,017,013,015,013,017,013,
444      /* 0020 */ 013,003,013,015,013,015,013,017,013,015,013,017,013,015,013,017,
445      /* 0040 */ 013,015,003,013,013,017,015,013,013,017,015,013,013,017,015,013,
446      /* 0060 */ 015,013,013,003,017,013,013,015,017,013,013,015,017,013,013,015,
447      /* 0100 */ 013,017,015,013,003,013,015,013,013,017,015,013,015,013,017,013,
448      /* 0120 */ 017,013,013,015,013,003,013,015,017,013,013,015,013,015,013,017,
449      /* 0140 */ 013,015,013,017,013,015,003,013,013,015,013,017,013,017,015,013,
450      /* 0160 */ 015,013,017,013,015,013,013,003,015,013,017,013,017,013,013,015,
451      /* 0200 */ 013,017,015,013,015,013,017,013,003,013,015,013,015,013,017,013,
452      /* 0220 */ 017,013,013,015,013,015,013,017,013,003,013,015,013,015,013,017,
453      /* 0240 */ 013,015,013,017,013,017,015,013,013,015,003,013,013,017,015,013,
454      /* 0260 */ 015,013,017,013,017,013,013,015,015,013,013,003,017,013,013,015,
455      /* 0300 */ 013,017,015,013,013,017,015,013,013,017,015,013,003,013,015,013,
456      /* 0320 */ 017,013,013,015,017,013,013,015,017,013,013,015,013,003,013,015,
457      /* 0340 */ 013,015,013,017,013,015,013,017,013,015,013,017,013,015,003,013,
458      /* 0360 */ 015,013,017,013,015,013,017,013,015,013,017,013,015,013,013,003
459   };
460   memcpy(m_disp_a38, disp_a38, sizeof(m_disp_a38));
461
462   UINT8 disp_a63[32] = {
463      /* 0000 */ 0007,0013,0015,0021,0024,0030,0034,0040,
464      /* 0010 */ 0044,0050,0054,0060,0064,0070,0074,0200,
465      /* 0020 */ 0004,0010,0014,0020,0024,0030,0034,0040,
466      /* 0030 */ 0044,0050,0054,0060,0064,0070,0175,0203
467   };
468   memcpy(m_disp_a63, disp_a63, sizeof(m_disp_a63));
469
470   UINT8 disp_a66[256] = {
471      /* 0000 */ 013,013,013,013,013,012,012,012,012,012,012,012,012,013,013,013,
472      /* 0020 */ 013,013,013,013,013,013,013,013,013,013,013,013,013,013,013,013,
473      /* 0040 */ 013,013,013,013,013,013,013,013,013,013,013,013,013,013,013,013,
474      /* 0060 */ 013,013,013,013,013,013,013,013,013,013,013,013,013,013,013,013,
475      /* 0100 */ 013,013,013,013,017,017,017,017,017,017,017,017,017,017,017,017,
476      /* 0120 */ 017,017,017,017,017,017,017,017,017,017,017,017,017,017,017,017,
477      /* 0140 */ 017,017,017,017,017,017,017,017,017,017,017,017,017,017,017,017,
478      /* 0160 */ 017,017,017,017,017,017,017,017,017,017,017,017,017,017,017,017,
479      /* 0200 */ 017,017,017,017,017,017,017,017,017,017,017,017,017,017,017,017,
480      /* 0220 */ 017,017,017,017,017,017,007,007,007,007,005,005,005,005,005,005,
481      /* 0240 */ 005,005,007,007,007,007,007,007,007,007,007,007,007,007,007,007,
482      /* 0260 */ 007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,
483      /* 0300 */ 007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,007,
484      /* 0320 */ 007,007,007,007,007,007,007,007,017,017,017,017,017,017,017,017,
485      /* 0340 */ 017,017,017,017,017,017,017,017,017,017,017,017,017,017,017,017,
486      /* 0360 */ 017,017,017,017,017,017,017,017,017,017,017,017,017,017,017,017
487   };
488   memcpy(m_disp_a66, disp_a66, sizeof(m_disp_a66));
489
490442   memset(&m_dsp, 0, sizeof(m_dsp));
491443   m_dsp.hlc = ALTO2_DISPLAY_HLC_START;
492444   m_dsp.raw_bitmap = (UINT16*)malloc(ALTO2_DISPLAY_HEIGHT * ALTO2_DISPLAY_SCANLINE_WORDS * sizeof(UINT16));
branches/alto2/src/emu/cpu/alto2/alto2.h
r26050r26051
807807    * access it. Also both, address and data lines, are inverted.
808808    * </PRE>
809809    */
810   UINT8 m_ctl2k_u3[256];
810   UINT8* m_ctl2k_u3;
811811
812812   /**
813813    * @brief 2KCTL PROM u38; 82S23; 32x8 bit
r26050r26051
856856    *   B7     9      NEXT[06]'
857857    * </PRE>
858858    */
859   UINT8 m_ctl2k_u38[32];
859   UINT8* m_ctl2k_u38;
860860
861861   //! output lines of the 2KCTL U38 PROM
862862   enum {
r26050r26051
928928    * depending on the current NEXT[01]' level.
929929    * </PRE>
930930    */
931   UINT8 m_ctl2k_u76[256];
931   UINT8* m_ctl2k_u76;
932932
933933   /**
934934    * @brief 3k CRAM PROM a37
935935    */
936   UINT8 m_cram3k_a37[256];
936   UINT8* m_cram3k_a37;
937937
938938   /**
939939    * @brief memory addressing PROM a64
940940    */
941   UINT8 m_madr_a64[256];
941   UINT8* m_madr_a64;
942942
943943   /**
944944    * @brief memory addressing PROM a65
945945    */
946   UINT8 m_madr_a65[256];
946   UINT8* m_madr_a65;
947947
948948   //! per task bus source function pointers, early (0) and late (1)
949949   a2func m_bs[2][ALTO2_TASKS][ALTO2_BUSSRC];
r26050r26051
10031003   void f2_alucy_1();                        //!< f2_alucy late: branch on latched ALU carry
10041004   void f2_load_md_1();                     //!< f2_load_md late: load memory data
10051005
1006   UINT8* m_alu_a10;                        //!< ALU function to 74181 operation lookup PROM
10061007   UINT32 alu_74181(UINT32 smc);
10071008
10081009   void rdram();                           //!< read the microcode ROM/RAM halfword
r26050r26051
12621263    * 0360: 017,007,013,017,013,017,017,007,007,017,017,013,017,013,007,017
12631264    * </PRE>
12641265    */
1265   UINT8 m_madr_a32[256];
1266   UINT8* m_madr_a32;
12661267   struct {
12671268      int x;
12681269      int y;
r26050r26051
17231724    *    O3 (010) = MBEMPTY'
17241725    * </PRE>
17251726    */
1726   UINT8 m_disp_a38[256];
1727   UINT8* m_disp_a38;
17271728
17281729   //! PROM a38 bit O1 is STOPWAKE' (stop DWT if bit is zero)
17291730   inline int FIFO_STOPWAKE_0() { return m_disp_a38[m_dsp.fifo_rd * 16 + m_dsp.fifo_wr] & 002; }
r26050r26051
17581759    * which happens to be very close to every 7th CPU micrcocycle.
17591760    * </PRE>
17601761    */
1761   UINT8 m_disp_a63[32];
1762   UINT8* m_disp_a63;
17621763
17631764   enum {
17641765      A63_HBLANK   = (1 << 0),            //!< PROM a63 B0 is latched as HBLANK signal
r26050r26051
18021803    * Q3 (004) is VBLANK for the odd field (with H1024=1)
18031804    * Q4 (010) is VBLANK for the even field (with H1024=0)
18041805    */
1805   UINT8 m_disp_a66[256];
1806   UINT8* m_disp_a66;
18061807
18071808   enum {
18081809      A66_VSYNC_ODD   = (1 << 0),
r26050r26051
20532054    * D2 (10) XDATA
20542055    * D3  (9) XCLOCK
20552056    */
2056   UINT8 m_ether_a41[256];
2057   UINT8 m_ether_a42[256];
2057   UINT8* m_ether_a41;
2058   UINT8* m_ether_a42;
20582059
20592060   /**
20602061    * @brief BPROM; P3601-1; 265x4 enet.a49 "AFIFO"
r26050r26051
21022103    * 340: 017 017 017 017 017 017 017 017 017 017 017 017 013 011 010 007
21032104    * 360: 007 017 017 017 017 017 017 017 017 017 017 017 017 013 011 010
21042105    */
2105   UINT8 m_ether_a49[256];
2106   UINT8* m_ether_a49;
21062107
21072108   static const int m_duckbreath_sec = 15;         //!< send duckbreath every 15 seconds
21082109
branches/alto2/src/mess/drivers/alto2.c
r26050r26051
6161
6262/* constant PROM with 256 16-bit words */
6363static ADDRESS_MAP_START( alto2_const_map, AS_DATA, 16, alto2_state )
64   AM_RANGE(0, 255) AM_ROM
64   AM_RANGE(0, 0377) AM_ROM
6565ADDRESS_MAP_END
6666
6767/* main memory and memory mapped i/o in range ALTO2_IO_PAGE_BASE ... ALTO2_IO_PAGE_BASE + ALTO2_IO_PAGE_SIZE - 1 */
r26050r26051
307307
308308ROM_START(alto2)
309309   // micro code PROMs, 8 x 4bit
310   // UINT32 src = addr ^ 0x3ff;
311   // UINT32 u32 = ~((ucode[src] << 24) | (ucode[src+0x400] << 16) | (ucode[src+0x800] << 8) | (ucode[src+0xc00));
312   // m_ucode[addr] = u32 ^ ALTO2_UCODE_INVERTED;
313310   ROM_REGION( 4*ALTO2_UCODE_SIZE, "maincpu", ROMREGION_INVERT )
314311   ROMX_LOAD( "62x.3",      00000, 02000, CRC(1b20a63f) SHA1(41dc86438e91c12b0fe42ffcce6b2ac2eb9e714a), ROM_NIBBLE | ROM_GROUPDWORD | ROM_NOSKIP | ROM_BITSHIFT( 0))   //!< 00000-01777 NEXT(6)',NEXT(7)',NEXT(8)',NEXT(9)'
315312   ROMX_LOAD( "61x.3",      00000, 02000, CRC(f25bcb2d) SHA1(acb57f3104a8dc4ba750dd1bf22ccc81cce9f084), ROM_NIBBLE | ROM_GROUPDWORD | ROM_NOSKIP | ROM_BITSHIFT( 4))   //!< 00000-01777 NEXT(2)',NEXT(3)',NEXT(4)',NEXT(5)'
r26050r26051
332329
333330   // constant PROMs, 4 x 4bit
334331   // UINT16 src = BITS(addr, 3,2,1,4,5,6,7,0);
335   // UINT16 u16 = ~((const[src] << 8) | (const[src+0x100));
336   // m_const[addr] = u16;
337332   ROM_REGION( 0400, "const", ROMREGION_INVERT )
338333   ROMX_LOAD( "madr.a3",    00000, 00400, CRC(e0992757) SHA1(5c45ea824970663cb9ee672dc50861539c860249), ROM_NIBBLE | ROM_GROUPWORD | ROM_NOSKIP | ROM_BITSHIFT( 0))   //!< 0000-0377 C(12)',C(13)',C(14)',C(15)'
339334   ROMX_LOAD( "madr.a4",    00000, 00400, CRC(b957e490) SHA1(c72660ad3ada4ca0ed8697c6bb6275a4fe703184), ROM_NIBBLE | ROM_GROUPWORD | ROM_NOSKIP | ROM_BITSHIFT( 4))   //!< 0000-0377 C(08)',C(09)',C(10)',C(11)'

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