valter/dosbox-staging
1
0
Fork 0
Code Releases Activity

Speaker init in BIOS causes samples to be generated at startup, so for now move it to hardware.

Browse source 
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3959
This commit is contained in:
ripsaw8080 2016-02-05 13:29:17 +00:00
parent 81e4f773f5
commit fe46abe6ff
2 changed files with 2 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
src/hardware/pcspeaker.cpp
View file

@ -332,7 +332,8 @@ public:
spkr.last_ticks=0;
spkr.last_index=0;
spkr.rate=section->Get_int("pcrate");
spkr.pit_max=(1000.0f/PIT_TICK_RATE)*65535;
spkr.pit_mode=3;
spkr.pit_max=(1000.0f/PIT_TICK_RATE)*1320;
spkr.pit_half=spkr.pit_max/2;
spkr.pit_new_max=spkr.pit_max;
spkr.pit_new_half=spkr.pit_half;

4
src/ints/bios.cpp
View file

@ -1254,10 +1254,6 @@ public:
config |= 0x1000;
mem_writew(BIOS_CONFIGURATION,config);
CMOS_SetRegister(0x14,(Bit8u)(config&0xff)); //Should be updated on changes
/* Setup PC speaker initial state - real BIOS does this for POST beeps */
IO_Write(0x43,0xb6); // PIT 2 mode 3
IO_Write(0x42,0x28); // counter 1320
IO_Write(0x42,0x05);
/* Setup extended memory size */
IO_Write(0x70,0x30);
size_extended=IO_Read(0x71);