Re: sound, SB, AC97 и другое
Posted: Sun Jun 01, 2014 12:01 pm
Further testing revealed that the problem was introduced in SVN #3727.
It has nothing to do with MMX. r3727 has allowed the memory previously reserved as SB16 buffer to be allocated for other goals. When SB16 code tries to reuse buffer for the sound, it destroys all data. It depends on memory size, what exactly data are destroyed, in the case of 64 Mb it turns out to be something system-critical like process page table or TSS, I didn't bothered to find out what exactly. I have fixed this in r5057.hidnplayr wrote:it means we dont catch invalid memory access through MMX registers, why dont we do this?
Мышка, разъясни, пожалуйста, действие мнемоники LEAVE в твоём коде без ENTER.CleverMouse wrote:Я исправила щелчки в VirtualBox со звуковой картой AC97 в r5077. Если где-то перестало работать - теперь вы знаете, какую ревизию надо проверять первой.
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proc START c uses ebx esi edi, state:dword, cmdline:dword
mov eax, [srv_entry]
cmp [state], 1
jne .stop
if DEBUG
mov esi, msgInit
invoke SysMsgBoardStr
end if
test eax, eax
jnz .done
call detect_controller
ret
.stop:
test eax, eax
jz .done
leave
jmp eax
.done:
xor eax, eax
ret
endp
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proc START c uses ebx esi edi, state:dword, cmdline:dword
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push ebx
push esi
push edi
...............
некий код функции
...............
pop edi
pop esi
pop ebx
ret
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proc START c uses ebx esi edi, state:dword, cmdline:dword
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START:
push ebp
mov ebp, esp
push ebx esi edi
...define state = [ebp+8]
...define cmdline = [ebp+12]
...define ret = macro {
pop edi esi ebx
leave
ret
}
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procedure via_ac97_write_reg (reg:byte; value:word);
var data, i : integer;
begin
data := (reg shl 16) + value;
outl (data, baseaddr + via_base0_ac97_ctrl);
end;
procedure ring0;
begin
via_ac97_write_reg (ac97_extended_status, 1);
sleep (5);
via_ac97_write_reg (ac97_pcm_front_dac_rate, 48000 ); //44100);
end;
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USE_SINGLE_MODE equ 1
ASIO это API или HAL драйвер, непосредственно работой с оборудованием она не занимается, поручая эту работу соответствующему WDM драйверу.microxa wrote:извиняюсь за офтоп, это просто к теме некоторой проблематики
http://tippach.business.t-online.de/asi ... f=8&t=1077
Нет, интерес разве что, в пересборке-оптимизации уже написаного Realtek-ом... По реализации APIAsper:
Собственно в связи с этим вопрос, вы хотите написать драйвер для Win?
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public make_codec_cmd ; +++
proc make_codec_cmd stdcall, nid:dword, direct:dword, verb:dword, parm:dword
....
public codec_exec_verb ; +++
proc codec_exec_verb stdcall, cmd:dword;, res:dword <- returned in eax
....
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public snd_hda_sequence_write
proc snd_hda_sequence_write stdcall, seq:dword
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codec.inc [162]:
mov ecx, [esi + hda_verb.nid]
error: undefined symbol 'hda_verb.nid'.
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FASM.EXE intel_hda.asm -s
flat assembler version 1.71.21 (1048576 kilobytes memory)
error: write failed.
после маленькой поправочки" incorrect fas file signature"
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.004046D8: cmp d,[esi],01A736166 ;'→saf'
.004046DE: jz .000404705 --↓1
.004046E0: push 00040D498 ;'incorrect fas file signature'
.004046E5: call printf
круто..format PE DLL native 0.05
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.flat:00000E08
.flat:00000E08 ; =============== S U B R O U T I N E =======================================
.flat:00000E08
.flat:00000E08
.flat:00000E08 azx_bus_reset proc near ; CODE XREF: codec_exec_verb+45
.flat:00000E08 call azx_stop_chip
.flat:00000E0D call azx_init_chip
.flat:00000E0D azx_bus_reset endp ; sp-analysis failed
.flat:00000E0D
.flat:00000E12
.flat:00000E12 ; =============== S U B R O U T I N E =======================================
.flat:00000E12
.flat:00000E12
.flat:00000E12 azx_codec_create proc near
.flat:00000E12 push ebx
.flat:00000E13 push ecx
.flat:00000E14 push edx