source/src/vm/mz2500/timer.cpp

   1 /*\r
   2         SHARP MZ-2200 Emulator 'EmuZ-2200'\r
   3         SHARP MZ-2500 Emulator 'EmuZ-2500'\r
   4 \r
   5         Author : Takeda.Toshiya\r
   6         Date   : 2006.12.03 -\r
   7 \r
   8         [ timer ]\r
   9 */\r
  10 \r
  11 #include "timer.h"\r
  12 #include "../i8253.h"\r
  13 \r
  14 void TIMER::write_io8(uint32 addr, uint32 data)\r
  15 {\r
  16         switch(addr & 0xff) {\r
  17         case 0xf0:\r
  18         case 0xf1:\r
  19         case 0xf2:\r
  20         case 0xf3:\r
  21                 // input gate signal H->L->H to i8253 ch0 and ch1\r
  22                 d_pit->write_signal(SIG_I8253_GATE_0, 1, 1);\r
  23                 d_pit->write_signal(SIG_I8253_GATE_1, 1, 1);\r
  24                 d_pit->write_signal(SIG_I8253_GATE_0, 0, 1);\r
  25                 d_pit->write_signal(SIG_I8253_GATE_1, 0, 1);\r
  26                 d_pit->write_signal(SIG_I8253_GATE_0, 1, 1);\r
  27                 d_pit->write_signal(SIG_I8253_GATE_1, 1, 1);\r
  28                 break;\r
  29         }\r
  30 }\r
  31 \r