mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-22 12:11:25 +00:00
- reverted GME Kss_Cpu.cpp to previous version
Update to GME 0.6.2 broke playback of MSX .kss files https://forum.zdoom.org/viewtopic.php?t=63206
This commit is contained in:
alexey.lysiuk
parent
28611613da
commit
df6669b32c
1 changed files with 51 additions and 46 deletions
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@ -1,4 +1,4 @@
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// Game_Music_Emu https://bitbucket.org/mpyne/game-music-emu/
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// Game_Music_Emu 0.6.0. http://www.slack.net/~ant/
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/*
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Last validated with zexall 2006.11.14 2:19 PM
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@ -162,6 +162,11 @@ static byte const ed_dd_timing [0x100] = {
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,
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};
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// even on x86, using short and unsigned char was slower
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typedef int fint16;
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typedef unsigned fuint16;
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typedef unsigned fuint8;
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bool Kss_Cpu::run( cpu_time_t end_time )
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{
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set_end_time( end_time );
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@ -178,10 +183,10 @@ bool Kss_Cpu::run( cpu_time_t end_time )
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rg = this->r.b;
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cpu_time_t s_time = s.time;
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uint16_t pc = r.pc;
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uint16_t sp = r.sp;
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uint16_t ix = r.ix; // TODO: keep in memory for direct access?
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uint16_t iy = r.iy;
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fuint16 pc = r.pc;
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fuint16 sp = r.sp;
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fuint16 ix = r.ix; // TODO: keep in memory for direct access?
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fuint16 iy = r.iy;
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int flags = r.b.flags;
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goto loop;
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@ -203,7 +208,7 @@ loop:
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uint8_t const* instr = s.read [pc >> page_shift];
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#define GET_ADDR() GET_LE16( instr )
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uint8_t opcode;
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fuint8 opcode;
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// TODO: eliminate this special case
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#if BLARGG_NONPORTABLE
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@ -236,7 +241,7 @@ loop:
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11,10,10, 4,17,11, 7,11,11, 6,10, 4,17, 8, 7,11, // F
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};
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uint16_t data;
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fuint16 data;
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data = base_timing [opcode];
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if ( (s_time += data) >= 0 )
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goto possibly_out_of_time;
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@ -292,7 +297,7 @@ possibly_out_of_time:
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goto loop;
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case 0x3A:{// LD A,(addr)
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uint16_t addr = GET_ADDR();
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fuint16 addr = GET_ADDR();
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pc += 2;
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rg.a = READ( addr );
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goto loop;
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@ -380,7 +385,7 @@ possibly_out_of_time:
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case 0xCD:{// CALL addr
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call_taken:
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uint16_t addr = pc + 2;
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fuint16 addr = pc + 2;
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pc = GET_ADDR();
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sp = uint16_t (sp - 2);
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WRITE_WORD( sp, addr );
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@ -388,7 +393,7 @@ possibly_out_of_time:
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}
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case 0xFF: // RST
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if ( pc >= idle_addr )
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if ( pc > idle_addr )
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goto hit_idle_addr;
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CASE7( C7, CF, D7, DF, E7, EF, F7 ):
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data = pc;
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@ -496,7 +501,7 @@ possibly_out_of_time:
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add_hl_data: {
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blargg_ulong sum = rp.hl + data;
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data ^= rp.hl;
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rp.hl = sum;
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rp.hl = (uint16_t)sum;
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flags = (flags & (S80 | Z40 | V04)) |
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(sum >> 16) |
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(sum >> 8 & (F20 | F08)) |
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@ -686,21 +691,21 @@ possibly_out_of_time:
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goto loop;
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case 0x2A:{// LD HL,(addr)
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uint16_t addr = GET_ADDR();
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fuint16 addr = GET_ADDR();
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pc += 2;
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rp.hl = READ_WORD( addr );
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goto loop;
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}
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case 0x32:{// LD (addr),A
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uint16_t addr = GET_ADDR();
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fuint16 addr = GET_ADDR();
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pc += 2;
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WRITE( addr, rg.a );
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goto loop;
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}
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case 0x22:{// LD (addr),HL
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uint16_t addr = GET_ADDR();
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fuint16 addr = GET_ADDR();
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pc += 2;
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WRITE_WORD( addr, rp.hl );
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goto loop;
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@ -723,7 +728,7 @@ possibly_out_of_time:
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// Rotate
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case 0x07:{// RLCA
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uint16_t temp = rg.a;
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fuint16 temp = rg.a;
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temp = (temp << 1) | (temp >> 7);
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flags = (flags & (S80 | Z40 | P04)) |
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(temp & (F20 | F08 | C01));
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@ -732,7 +737,7 @@ possibly_out_of_time:
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}
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case 0x0F:{// RRCA
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uint16_t temp = rg.a;
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fuint16 temp = rg.a;
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flags = (flags & (S80 | Z40 | P04)) |
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(temp & C01);
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temp = (temp << 7) | (temp >> 1);
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@ -746,12 +751,12 @@ possibly_out_of_time:
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flags = (flags & (S80 | Z40 | P04)) |
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(temp & (F20 | F08)) |
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(temp >> 8);
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rg.a = temp;
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rg.a = (uint8_t)temp;
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goto loop;
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}
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case 0x1F:{// RRA
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uint16_t temp = (flags << 7) | (rg.a >> 1);
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fuint16 temp = (flags << 7) | (rg.a >> 1);
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flags = (flags & (S80 | Z40 | P04)) |
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(temp & (F20 | F08)) |
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(rg.a & C01);
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@ -761,7 +766,7 @@ possibly_out_of_time:
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// Misc
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case 0x2F:{// CPL
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uint16_t temp = ~rg.a;
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fuint16 temp = ~rg.a;
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flags = (flags & (S80 | Z40 | P04 | C01)) |
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(temp & (F20 | F08)) |
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(H10 | N02);
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@ -787,21 +792,21 @@ possibly_out_of_time:
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goto loop;
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case 0xE3:{// EX (SP),HL
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uint16_t temp = READ_WORD( sp );
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fuint16 temp = READ_WORD( sp );
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WRITE_WORD( sp, rp.hl );
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rp.hl = temp;
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goto loop;
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}
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case 0xEB:{// EX DE,HL
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uint16_t temp = rp.hl;
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fuint16 temp = rp.hl;
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rp.hl = rp.de;
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rp.de = temp;
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goto loop;
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}
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case 0xD9:{// EXX DE,HL
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uint16_t temp = r.alt.w.bc;
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fuint16 temp = r.alt.w.bc;
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r.alt.w.bc = rp.bc;
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rp.bc = temp;
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@ -842,7 +847,7 @@ possibly_out_of_time:
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// Rotate left
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#define RLC( read, write ) {\
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uint8_t result = read;\
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fuint8 result = read;\
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result = uint8_t (result << 1) | (result >> 7);\
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flags = SZ28P( result ) | (result & C01);\
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write;\
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@ -861,7 +866,7 @@ possibly_out_of_time:
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}
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#define RL( read, write ) {\
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uint16_t result = (read << 1) | (flags & C01);\
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fuint16 result = (read << 1) | (flags & C01);\
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flags = SZ28PC( result );\
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write;\
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goto loop;\
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@ -879,7 +884,7 @@ possibly_out_of_time:
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}
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#define SLA( read, add, write ) {\
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uint16_t result = (read << 1) | add;\
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fuint16 result = (read << 1) | add;\
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flags = SZ28PC( result );\
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write;\
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goto loop;\
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@ -910,7 +915,7 @@ possibly_out_of_time:
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// Rotate right
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#define RRC( read, write ) {\
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uint8_t result = read;\
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fuint8 result = read;\
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flags = result & C01;\
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result = uint8_t (result << 7) | (result >> 1);\
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flags |= SZ28P( result );\
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@ -930,8 +935,8 @@ possibly_out_of_time:
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}
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#define RR( read, write ) {\
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uint8_t result = read;\
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uint8_t temp = result & C01;\
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fuint8 result = read;\
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fuint8 temp = result & C01;\
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result = uint8_t (flags << 7) | (result >> 1);\
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flags = SZ28P( result ) | temp;\
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write;\
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@ -950,7 +955,7 @@ possibly_out_of_time:
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}
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#define SRA( read, write ) {\
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uint8_t result = read;\
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fuint8 result = read;\
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flags = result & C01;\
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result = (result & 0x80) | (result >> 1);\
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flags |= SZ28P( result );\
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@ -970,7 +975,7 @@ possibly_out_of_time:
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}
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#define SRL( read, write ) {\
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uint8_t result = read;\
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fuint8 result = read;\
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flags = result & C01;\
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result >>= 1;\
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flags |= SZ28P( result );\
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@ -1078,7 +1083,7 @@ possibly_out_of_time:
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blargg_ulong sum = temp + (flags & C01);
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flags = ~data >> 2 & N02;
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if ( flags )
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sum = -sum;
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sum = (blargg_ulong)-(blargg_long)sum;
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sum += rp.hl;
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temp ^= rp.hl;
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temp ^= sum;
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@ -1086,7 +1091,7 @@ possibly_out_of_time:
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(temp >> 8 & H10) |
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(sum >> 8 & (S80 | F20 | F08)) |
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((temp - -0x8000) >> 14 & V04);
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rp.hl = sum;
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rp.hl = (uint16_t)sum;
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if ( (uint16_t) sum )
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goto loop;
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flags |= Z40;
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@ -1114,7 +1119,7 @@ possibly_out_of_time:
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case 0x43: // LD (ADDR),BC
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case 0x53: // LD (ADDR),DE
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temp = R16( data, 4, 0x43 );
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uint16_t addr = GET_ADDR();
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fuint16 addr = GET_ADDR();
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pc += 2;
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WRITE_WORD( addr, temp );
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goto loop;
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@ -1122,21 +1127,21 @@ possibly_out_of_time:
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case 0x4B: // LD BC,(ADDR)
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case 0x5B:{// LD DE,(ADDR)
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uint16_t addr = GET_ADDR();
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fuint16 addr = GET_ADDR();
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pc += 2;
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R16( data, 4, 0x4B ) = READ_WORD( addr );
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goto loop;
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}
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case 0x7B:{// LD SP,(ADDR)
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uint16_t addr = GET_ADDR();
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fuint16 addr = GET_ADDR();
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pc += 2;
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sp = READ_WORD( addr );
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goto loop;
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}
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case 0x67:{// RRD
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uint8_t temp = READ( rp.hl );
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fuint8 temp = READ( rp.hl );
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WRITE( rp.hl, (rg.a << 4) | (temp >> 4) );
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temp = (rg.a & 0xF0) | (temp & 0x0F);
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flags = (flags & C01) | SZ28P( temp );
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@ -1145,7 +1150,7 @@ possibly_out_of_time:
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}
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case 0x6F:{// RLD
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uint8_t temp = READ( rp.hl );
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fuint8 temp = READ( rp.hl );
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WRITE( rp.hl, (temp << 4) | (rg.a & 0x0F) );
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temp = (rg.a & 0xF0) | (temp >> 4);
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flags = (flags & C01) | SZ28P( temp );
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@ -1169,7 +1174,7 @@ possibly_out_of_time:
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case 0xA1: // CPI
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case 0xB1: // CPIR
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inc = +1;
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uint16_t addr = rp.hl;
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fuint16 addr = rp.hl;
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rp.hl = addr + inc;
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int temp = READ( addr );
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@ -1202,7 +1207,7 @@ possibly_out_of_time:
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case 0xA0: // LDI
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case 0xB0: // LDIR
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inc = +1;
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uint16_t addr = rp.hl;
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fuint16 addr = rp.hl;
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rp.hl = addr + inc;
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int temp = READ( addr );
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@ -1234,7 +1239,7 @@ possibly_out_of_time:
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case 0xA3: // OUTI
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case 0xB3: // OTIR
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inc = +1;
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uint16_t addr = rp.hl;
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fuint16 addr = rp.hl;
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rp.hl = addr + inc;
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int temp = READ( addr );
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@ -1260,7 +1265,7 @@ possibly_out_of_time:
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case 0xB2: // INIR
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inc = +1;
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uint16_t addr = rp.hl;
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fuint16 addr = rp.hl;
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rp.hl = addr + inc;
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int temp = IN( rp.bc );
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@ -1325,7 +1330,7 @@ possibly_out_of_time:
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//////////////////////////////////////// DD/FD prefix
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{
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uint16_t ixy;
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fuint16 ixy;
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case 0xDD:
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ixy = ix;
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goto ix_prefix;
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@ -1521,7 +1526,7 @@ possibly_out_of_time:
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goto loop;
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case 0x22:{// LD (ADDR),IXY
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uint16_t addr = GET_ADDR();
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fuint16 addr = GET_ADDR();
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pc += 2;
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WRITE_WORD( addr, ixy );
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goto loop;
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@ -1533,7 +1538,7 @@ possibly_out_of_time:
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goto set_ixy;
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case 0x2A:{// LD IXY,(addr)
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uint16_t addr = GET_ADDR();
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fuint16 addr = GET_ADDR();
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ixy = READ_WORD( addr );
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pc += 2;
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goto set_ixy;
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@ -1557,7 +1562,7 @@ possibly_out_of_time:
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case 0x3E: goto srl_data_addr; // SRL (IXY)
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CASE8( 46, 4E, 56, 5E, 66, 6E, 76, 7E ):{// BIT b,(IXY+disp)
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uint8_t temp = READ( data );
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fuint8 temp = READ( data );
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int masked = temp & 1 << (data2 >> 3 & 7);
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flags = (flags & C01) | H10 |
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(masked & S80) |
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@ -1659,7 +1664,7 @@ possibly_out_of_time:
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goto loop;
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case 0xE3:{// EX (SP),IXY
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uint16_t temp = READ_WORD( sp );
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fuint16 temp = READ_WORD( sp );
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WRITE_WORD( sp, ixy );
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ixy = temp;
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goto set_ixy;
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