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Diff for /np2/bios/bios1b.c between versions 1.8 and 1.9

version 1.8, 2003/12/28 14:33:34 version 1.9, 2004/01/05 12:54:56
Line 995  void bios0x1b(void) { Line 995  void bios0x1b(void) {
         BYTE    ret_ah;          BYTE    ret_ah;
         REG8    flag;          REG8    flag;
   
   #if 0                   // bypass to disk bios
           REG8    seg;
   
           seg = mem[0x004b0 + (CPU_AH >> 4)];
           if (seg) {
                   i286_memword_write(CPU_SS, (REG16)(CPU_SP - 2), CPU_DS);
                   i286_memword_write(CPU_SS, (REG16)(CPU_SP - 4), CPU_SI);
                   i286_memword_write(CPU_SS, (REG16)(CPU_SP - 6), CPU_DI);
                   i286_memword_write(CPU_SS, (REG16)(CPU_SP - 8), CPU_ES);
                   i286_memword_write(CPU_SS, (REG16)(CPU_SP - 10), CPU_BP);
                   i286_memword_write(CPU_SS, (REG16)(CPU_SP - 12), CPU_DX);
                   i286_memword_write(CPU_SS, (REG16)(CPU_SP - 14), CPU_CX);
                   i286_memword_write(CPU_SS, (REG16)(CPU_SP - 16), CPU_BX);
                   i286_memword_write(CPU_SS, (REG16)(CPU_SP - 18), CPU_AX);
                   CPU_SP -= 18;
                   CPU_CS = seg << 8;
                   CPU_IP = 0x18;
                   TRACEOUT(("bypass to %.4x:%.4x", CPU_CS, CPU_IP));
                   return;
           }
   #endif
   
         switch(CPU_AL & 0xf0) {          switch(CPU_AL & 0xf0) {
                 case 0x90:                  case 0x90:
                         ret_ah = fdd_operate(DISKTYPE_2HD, 0, 0);                          ret_ah = fdd_operate(DISKTYPE_2HD, 0, 0);
Removed from v.1.8  
changed lines
  Added in v.1.9

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