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#1
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A hack, anyone, to turn on dma ?
My samsung sh-182f DVD writer has become horribly slow,
records at 1X max, even with 16X disks. I cannot turn DMA on in the hardware manager. Even my floppy drive has DMA ........ Must be a way. 6 hours hacking and nothing so far. TIA Apparently there is a registry/system entry that does not allow DMA on a drive, but cannot find it. Neither on PC or on Google. The drive had DMA a month ago, last time I checked. |
#2
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A hack, anyone, to turn on dma ?
"Shadow" sh@dow wrote in message
... My samsung sh-182f DVD writer has become horribly slow, records at 1X max, even with 16X disks. I cannot turn DMA on in the hardware manager. Even my floppy drive has DMA ........ Must be a way. 6 hours hacking and nothing so far. TIA Apparently there is a registry/system entry that does not allow DMA on a drive, but cannot find it. Neither on PC or on Google. The drive had DMA a month ago, last time I checked. What processor/motherboard/chipset? Have you checked the BIOS settings to see if they have changed? Is UDMA enabled for the IDE channel the drive is on? What happens when you try to enable DMA in Device Manager? Are there any problems noted in Device Manager? Drive Does Not Have a DMA Check Box: http://support.microsoft.com/?kbid=229085 DMA Check Box Does Not Remain Checked: http://support.microsoft.com/?kbid=159560 -- Glen Ventura, MS MVP Windows, A+ http://dts-l.net/ http://dts-l.net/goodpost.htm |
#3
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A hack, anyone, to turn on dma ?
Shadow wrote:
| My samsung sh-182f DVD writer has become horribly slow, | records at 1X max, even with 16X disks. | I cannot turn DMA on in the hardware manager. | Even my floppy drive has DMA ........ | Must be a way. 6 hours hacking and nothing so far. | TIA | Apparently there is a registry/system entry that does not | allow DMA on a drive, but cannot find it. Neither on PC or on Google. | The drive had DMA a month ago, last time I checked. If those URLs glee posted don't fix it... (1) "START button, Run, MSInfo32, Components, Storage" (2) Bolt "Advanced Information", & use the Edit menu to post it. (3) Bolt "History", use the mouse to highlight DVD information, & use Ctlr-C to copy & post it. (4) Click, copy & post "Problem Devices" too, if any. -- Thanks or Good Luck, There may be humor in this post, and, Naturally, you will not sue, Should things get worse after this, PCR |
#4
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A hack, anyone, to turn on dma ?
On Tue, 24 Jun 2008 18:56:42 -0400, "PCR" wrote:
Shadow wrote: | My samsung sh-182f DVD writer has become horribly slow, | records at 1X max, even with 16X disks. | I cannot turn DMA on in the hardware manager. | Even my floppy drive has DMA ........ | Must be a way. 6 hours hacking and nothing so far. | TIA | Apparently there is a registry/system entry that does not | allow DMA on a drive, but cannot find it. Neither on PC or on Google. | The drive had DMA a month ago, last time I checked. If those URLs glee posted don't fix it... (1) "START button, Run, MSInfo32, Components, Storage" (2) Bolt "Advanced Information", & use the Edit menu to post it. Controlador padrão de disquete fdc Chave do Registro: HKEY_LOCAL_MACHINE\enum\ACPI\*PNP0700\0 Recursos Alloc: Configuração lógica 0 IRQ: Máscara 6: x0000 DMA: Máscara 2: x0000 Intervalo de E/S: Base=x03F0 fim=x03F5 Alias=x00, decodificação=x00 Base=x03F7 Fim=x03F7 Alias=x00, decodificação=x00 Recursos Forçado: Nenhum Recursos Inicializar: Configuração lógica 0 IRQ: Máscara 6: x0000 DMA: Máscara 2: x0000 Intervalo de E/S: Base=x03F0 fim=x03F5 Alias=x00, decodificação=x00 Base=x03F7 Fim=x03F7 Alias=x00, decodificação=x00 Recursos Filtrado: Configuração lógica 0 IRQ: Máscara 0: x0040 DMA: Máscara 0: x0004 Intervalo de E/S: Base=x0000 fim=x0000 Mín=x03F0 Máx=x03F5 Alias=x00, decodificação=x00 Base=x0000 Fim=x0000 Mín=x03F7 Máx=x03F7 Alias=x00, decodificação=x00 Configuração lógica 1 IRQ: Máscara 0: x1CF8 DMA: Máscara 0: x000E Intervalo de E/S: Base=x0000 fim=x0000 Mín=x03F0 Máx=x03F5 Alias=x00, decodificação=x00 Base=x0000 Fim=x0000 Mín=x03F7 Máx=x03F7 Alias=x00, decodificação=x00 Configuração lógica 2 IRQ: Máscara 0: x1CF8 DMA: Máscara 0: x000E Intervalo de E/S: Base=x0000 fim=x0000 Mín=x0370 Máx=x0375 Alias=x00, decodificação=x00 Base=x0000 Fim=x0000 Mín=x0377 Máx=x0377 Alias=x00, decodificação=x00 Recursos Básico: Configuração lógica 0 IRQ: Máscara 0: x0040 DMA: Máscara 0: x0004 Intervalo de E/S: Base=x0000 fim=x0000 Mín=x03F0 Máx=x03F5 Alias=x00, decodificação=x00 Base=x0000 Fim=x0000 Mín=x03F7 Máx=x03F7 Alias=x00, decodificação=x00 Configuração lógica 1 IRQ: Máscara 0: x1CF8 DMA: Máscara 0: x000E Intervalo de E/S: Base=x0000 fim=x0000 Mín=x03F0 Máx=x03F5 Alias=x00, decodificação=x00 Base=x0000 Fim=x0000 Mín=x03F7 Máx=x03F7 Alias=x00, decodificação=x00 Configuração lógica 2 IRQ: Máscara 0: x1CF8 DMA: Máscara 0: x000E Intervalo de E/S: Base=x0000 fim=x0000 Mín=x0370 Máx=x0375 Alias=x00, decodificação=x00 Base=x0000 Fim=x0000 Mín=x0377 Máx=x0377 Alias=x00, decodificação=x00 Driver: fdc\0000 Data do driver: 5- 5-1999 Driver: HSFLOP.pdr Tamanho do arquivo: 25741 (0x648D) Data do arquivo: 5/5/1999 10:22 PM Nome da empresa: Microsoft Corporation Versão do arquivo: 4.10.2222 VIA RAID Controller - 3149 SCSIAdapter Chave do Registro: HKEY_LOCAL_MACHINE\enum\PCI\VEN_1106&DEV_3149&SUBS YS_80ED1043&REV_80\BUS_00&DEV_0F&FUNC_00 Recursos Alloc: Configuração lógica 0 IRQ: Máscara 10: xFFFF Intervalo de E/S: Base=xE800 fim=xE807 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xE400 Fim=xE403 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xE000 Fim=xE007 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xD800 Fim=xD803 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xD400 Fim=xD40F Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xD000 Fim=xD0FF Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Recursos Forçado: Nenhum Recursos Inicializar: Configuração lógica 0 Intervalo de E/S: Base=xE800 fim=xE807 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xE400 Fim=xE403 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xE000 Fim=xE007 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xD800 Fim=xD803 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xD400 Fim=xD40F Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xD000 Fim=xD0FF Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Recursos Filtrado: Configuração lógica 0 IRQ: Máscara 10: xFFFF Intervalo de E/S: Base=xE800 fim=xE807 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xE400 Fim=xE403 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xE000 Fim=xE007 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xD800 Fim=xD803 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xD400 Fim=xD40F Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xD000 Fim=xD0FF Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Recursos Básico: Configuração lógica 0 IRQ: Máscara 0: xFFFF Intervalo de E/S: Base=xE800 fim=xE807 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xE400 Fim=xE403 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xE000 Fim=xE007 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xD800 Fim=xD803 Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xD400 Fim=xD40F Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Base=xD000 Fim=xD0FF Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Revisão do HW: 128 Driver: SCSIAdapter\0017 Data do driver: 12-20-2007 Driver: viamvsd.vxd Tamanho do arquivo: 13334 (0x3416) Data do arquivo: 11/23/2005 1:12 AM Nome da empresa: VIA Technologies, Inc. Versão do arquivo: 2.0.950.500 Driver: viamraid.mpd Tamanho do arquivo: 103533 (0x1946D) Data do arquivo: 12/20/2007 10:03 AM Nome da empresa: VIA Technologies inc,.ltd Versão do arquivo: 2.0.950.573 VIA Bus Master PCI IDE Controller hdc Chave do Registro: HKEY_LOCAL_MACHINE\enum\PCI\VEN_1106&DEV_0571&SUBS YS_80ED1043&REV_06\BUS_00&DEV_0F&FUNC_01 Recursos Alloc: Configuração lógica 0 IRQ: Máscara 14: x4000 Máscara 15: x8000 Intervalo de E/S: Base=x01F0 fim=x01F7 Mín=x01F0 Máx=x01F7 Alias=x04, decodificação=x03 Base=x03F6 Fim=x03F6 Mín=x03F6 Máx=x03F6 Alias=x04, decodificação=x03 Base=x0170 Fim=x0177 Mín=x0170 Máx=x0177 Alias=x04, decodificação=x03 Base=x0376 Fim=x0376 Mín=x0376 Máx=x0376 Alias=x04, decodificação=x03 Base=xFC00 Fim=xFC0F Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Recursos Forçado: Nenhum Recursos Inicializar: Configuração lógica 0 IRQ: Máscara 14: x4000 Máscara 15: x8000 Intervalo de E/S: Base=x01F0 fim=x01F7 Mín=x01F0 Máx=x01F7 Alias=x04, decodificação=x03 Base=x03F6 Fim=x03F6 Mín=x03F6 Máx=x03F6 Alias=x04, decodificação=x03 Base=x0170 Fim=x0177 Mín=x0170 Máx=x0177 Alias=x04, decodificação=x03 Base=x0376 Fim=x0376 Mín=x0376 Máx=x0376 Alias=x04, decodificação=x03 Base=xFC00 Fim=xFC0F Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Recursos Filtrado: Configuração lógica 0 IRQ: Máscara 14: x4000 Máscara 15: x8000 Intervalo de E/S: Base=x01F0 fim=x01F7 Mín=x01F0 Máx=x01F7 Alias=x04, decodificação=x03 Base=x03F6 Fim=x03F6 Mín=x03F6 Máx=x03F6 Alias=x04, decodificação=x03 Base=x0170 Fim=x0177 Mín=x0170 Máx=x0177 Alias=x04, decodificação=x03 Base=x0376 Fim=x0376 Mín=x0376 Máx=x0376 Alias=x04, decodificação=x03 Base=xFC00 Fim=xFC0F Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Recursos Básico: Configuração lógica 0 IRQ: Máscara 14: x4000 Máscara 15: x8000 Intervalo de E/S: Base=x01F0 fim=x01F7 Mín=x01F0 Máx=x01F7 Alias=x04, decodificação=x03 Base=x03F6 Fim=x03F6 Mín=x03F6 Máx=x03F6 Alias=x04, decodificação=x03 Base=x0170 Fim=x0177 Mín=x0170 Máx=x0177 Alias=x04, decodificação=x03 Base=x0376 Fim=x0376 Mín=x0376 Máx=x0376 Alias=x04, decodificação=x03 Base=xFC00 Fim=xFC0F Mín=x0000 Máx=xFFFF Alias=xFF, decodificação=x00 Revisão do HW: 006 Driver: hdc\0000 Data do driver: 5- 5-1999 Driver: vatapi.vxd Tamanho do arquivo: 10937 (0x2AB9) Data do arquivo: 10/18/2001 12:00 PM Nome da empresa: VIA Technologies, Inc. Versão do arquivo: 2.0.950.120 Primary IDE controller (dual fifo) hdc Chave do Registro: HKEY_LOCAL_MACHINE\enum\MF\CHILD0000\PCI&VEN_1106& DEV_0571&SUBSYS_80ED1043&REV_06&BUS_00&DEV_0F&FUNC _01 Recursos Alloc: Configuração lógica 0 IRQ: Máscara 14: x4000 Intervalo de E/S: Base=x01F0 fim=x01F7 Mín=x01F0 Máx=x01F7 Alias=x04, decodificação=x03 Base=x03F6 Fim=x03F6 Mín=x03F6 Máx=x03F6 Alias=x04, decodificação=x03 Base=xFC00 Fim=xFC07 Alias=xFF, decodificação=x00 Recursos Forçado: Nenhum Recursos Inicializar: Nenhum Recursos Filtrado: Nenhum Recursos Básico: Nenhum Driver: hdc\0001 Data do driver: 5- 5-1999 Driver: ESDI_506.pdr Tamanho do arquivo: 24406 (0x5F56) Data do arquivo: 5/5/1999 10:22 PM Nome da empresa: Microsoft Corporation Versão do arquivo: 4.10.2222 Secondary IDE controller (dual fifo) hdc Chave do Registro: HKEY_LOCAL_MACHINE\enum\MF\CHILD0001\PCI&VEN_1106& DEV_0571&SUBSYS_80ED1043&REV_06&BUS_00&DEV_0F&FUNC _01 Recursos Alloc: Configuração lógica 0 IRQ: Máscara 15: x8000 Intervalo de E/S: Base=x0170 fim=x0177 Mín=x0170 Máx=x0177 Alias=x04, decodificação=x03 Base=x0376 Fim=x0376 Mín=x0376 Máx=x0376 Alias=x04, decodificação=x03 Base=xFC08 Fim=xFC0F Alias=xFF, decodificação=x00 Recursos Forçado: Nenhum Recursos Inicializar: Nenhum Recursos Filtrado: Nenhum Recursos Básico: Nenhum Driver: hdc\0002 Data do driver: 5- 5-1999 Driver: ESDI_506.pdr Tamanho do arquivo: 24406 (0x5F56) Data do arquivo: 5/5/1999 10:22 PM Nome da empresa: Microsoft Corporation Versão do arquivo: 4.10.2222 GENERIC IDE DISK TYPE47 DiskDrive Chave do Registro: HKEY_LOCAL_MACHINE\enum\ESDI\GENERIC_IDE__DISK_TYP E47_\MF&CHILD0000&PCI&VEN_1106&DEV_0571&SUBSYS_80E D1043&REV_06&BUS_00&DEV_0F&FUNC_0100 Recursos Alloc: Nenhum Recursos Forçado: Nenhum Recursos Inicializar: Nenhum Recursos Filtrado: Nenhum Recursos Básico: Nenhum Letra da unidade atual: CDEFGH Driver: DiskDrive\0000 Data do driver: 5- 5-1999 TSSTcorp CD/DVDW SH-S182F CDROM Chave do Registro: HKEY_LOCAL_MACHINE\enum\SCSI\TSSTCORPCD/DVDW_SH-S182FS\MF&CHILD0001&PCI&VEN_1106&DEV_0571&SUBSYS_8 0ED1043&REV_06&BUS_00&DEV_0F&FUNC_0100 Recursos Alloc: Nenhum Recursos Forçado: Nenhum Recursos Inicializar: Nenhum Recursos Filtrado: Nenhum Recursos Básico: Nenhum Driver: CDROM\0000 Data do driver: 5- 5-1999 GENERIC NEC FLOPPY DISK DiskDrive Chave do Registro: HKEY_LOCAL_MACHINE\enum\FLOP\GENERIC_NEC__FLOPPY_D ISK_\ACPI&*PNP0700&000 Recursos Alloc: Nenhum Recursos Forçado: Nenhum Recursos Inicializar: Nenhum Recursos Filtrado: Nenhum Recursos Básico: Nenhum Letra da unidade atual: A Driver: DiskDrive\0001 Data do driver: 5- 5-1999 (3) Bolt "History", use the mouse to highlight DVD information, & use Ctlr-C to copy & post it. TSSTcorp CD/DVDW SH-S182F Configuração original Tue Jun 24 22:06:37 2008 para Date Recursos Alloc: Nenhum (4) Click, copy & post "Problem Devices" too, if any. None |
#5
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A hack, anyone, to turn on dma ?
On Tue, 24 Jun 2008 14:55:36 -0400, "glee"
wrote: "Shadow" sh@dow wrote in message .. . My samsung sh-182f DVD writer has become horribly slow, records at 1X max, even with 16X disks. I cannot turn DMA on in the hardware manager. Even my floppy drive has DMA ........ Must be a way. 6 hours hacking and nothing so far. TIA Apparently there is a registry/system entry that does not allow DMA on a drive, but cannot find it. Neither on PC or on Google. The drive had DMA a month ago, last time I checked. What processor/motherboard/chipset? Manufacturer ASUSTeK Computer Inc. Model K8V-MX Version 3.01G Chipset Vendor VIA Technologies Inc Chipset Model K8M400 CPU to PCI Bridge South Bridge VT8237 PCI to ISA Bridge SMBus VIA Technologies Inc VT8237 PCI to ISA Bridge @0400h CPU AMD Sempron 2600+ Cpu Socket Socket 754 Max CPU Speed 1600 MHz Have you checked the BIOS settings to see if they have changed? Yes. Don't think so. Is UDMA enabled for the IDE channel the drive is on? In the BIOS ? Yes. What happens when you try to enable DMA in Device Manager? The box does not stay ticked, even without a reboot. Are there any problems noted in Device Manager? Nope Drive Does Not Have a DMA Check Box: http://support.microsoft.com/?kbid=229085 Mine does DMA Check Box Does Not Remain Checked: http://support.microsoft.com/?kbid=159560 Debug ? OK, here we go: o 176 a0 ; a0 (a-zero) is for a master drive, use b0 for a slave. o 172 22 ; 22 is for DMA mode 2, use 21 for DMA mode 1. o 171 03 ; 03 (zero-3) is to program the hard disk timing. o 177 ef ; ef is the set feature command for the hard disk. i 171 ; Reads in the error status; a value is returned. Got 00 for anything from 21 to 25 in line 2 So the drive accepts up to dma 5 dma 6 returned a 04 error So my bus-mastering driver has gone bad. But I tried the via 434, 456, and 517 before posting this plea for help. Any suggestions ? |
#6
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A hack, anyone, to turn on dma ?
"Shadow" sh@dow wrote in message
... On Tue, 24 Jun 2008 14:55:36 -0400, "glee" wrote: "Shadow" sh@dow wrote in message . .. My samsung sh-182f DVD writer has become horribly slow, records at 1X max, even with 16X disks. I cannot turn DMA on in the hardware manager. Even my floppy drive has DMA ........ Must be a way. 6 hours hacking and nothing so far. TIA Apparently there is a registry/system entry that does not allow DMA on a drive, but cannot find it. Neither on PC or on Google. The drive had DMA a month ago, last time I checked. What processor/motherboard/chipset? Manufacturer ASUSTeK Computer Inc. Model K8V-MX Version 3.01G Chipset Vendor VIA Technologies Inc Chipset Model K8M400 CPU to PCI Bridge South Bridge VT8237 PCI to ISA Bridge SMBus VIA Technologies Inc VT8237 PCI to ISA Bridge @0400h CPU AMD Sempron 2600+ Cpu Socket Socket 754 Max CPU Speed 1600 MHz Have you checked the BIOS settings to see if they have changed? Yes. Don't think so. Is UDMA enabled for the IDE channel the drive is on? In the BIOS ? Yes. What happens when you try to enable DMA in Device Manager? The box does not stay ticked, even without a reboot. Are there any problems noted in Device Manager? Nope Drive Does Not Have a DMA Check Box: http://support.microsoft.com/?kbid=229085 Mine does DMA Check Box Does Not Remain Checked: http://support.microsoft.com/?kbid=159560 Debug ? OK, here we go: o 176 a0 ; a0 (a-zero) is for a master drive, use b0 for a slave. o 172 22 ; 22 is for DMA mode 2, use 21 for DMA mode 1. o 171 03 ; 03 (zero-3) is to program the hard disk timing. o 177 ef ; ef is the set feature command for the hard disk. i 171 ; Reads in the error status; a value is returned. Got 00 for anything from 21 to 25 in line 2 So the drive accepts up to dma 5 dma 6 returned a 04 error So my bus-mastering driver has gone bad. But I tried the via 434, 456, and 517 before posting this plea for help. Any suggestions ? Suggestions? Sure. Open Device Manager, select the top entry (Computer icon), and click the Properties button. This will display the IRQ settings. Select Direct Memory Access(DMA) to view devices using DMA Channels. What DMA Channels are in use? There are 8 DMA channels but one is used by the DMA controller so 7 are available for devices. Tell us what device is using each channel. Uninstall the Via chipset drivers (4-in-1 driver). Reboot. Then restart in Safe Mode. Open Device Manager, remove all items in the CDROM category, remove all items in the Hard disk drives category, and remove the VIA Bus Master PCI IDE Controller in the Hard disk controller category. Restart in normal mode, let Windows redetect both the primary and secondary IDE controllers, then reboot and install the Via 4-in-1 drivers. If that does not help, replace the IDE ribbon cable attached to the DVD drive with a new one no more than 18" long. Repeat the above steps if needed. In looking at the info you posted in reply to PCR, I notice you have viamvsd.vxd and VIAmraid.mpd installed. Those are Via RAID controller drivers....are you using the RAID controllers? If not, why are you enabling them and installing drivers? -- Glen Ventura, MS MVP Windows, A+ http://dts-l.net/ http://dts-l.net/goodpost.htm |
#7
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A hack, anyone, to turn on dma ?
On Tue, 24 Jun 2008 23:37:58 -0400, "glee"
wrote: "Shadow" sh@dow wrote in message .. . On Tue, 24 Jun 2008 14:55:36 -0400, "glee" wrote: Open Device Manager, select the top entry (Computer icon), and click the Properties button. There are 8 DMA channels but one is used by the DMA controller so 7 are available for devices. Tell us what device is using each channel. 0 (livre) 1 (livre) 2 Controlador padrão de disquete 3 (livre) 4 Controlador de acesso direto à memória 5 (livre) 6 (livre) 7 (livre) Uninstall the Via chipset drivers (4-in-1 driver). ok Reboot. Then restart in Safe Mode ok Open Device Manager, remove all items in the CDROM category, remove all items in the Hard disk drives category, and remove the VIA Bus Master PCI IDE Controller in the Hard disk controller category. done Restart in normal mode, let Windows redetect both the primary and secondary IDE controllers, then reboot and install the Via 4-in-1 drivers. done nothing changed If that does not help, replace the IDE ribbon cable attached to the DVD drive with a new one no more than 18" long. done Repeat the above steps if needed. done ...still the same In looking at the info you posted in reply to PCR, I notice you have viamvsd.vxd and VIAmraid.mpd installed. Those are Via RAID controller drivers....are you using the RAID controllers? If not, why are you enabling them and installing drivers? No idea. Maybe some driver came with the disk. I see nothing about raid in the bios. When I enable dma in device manager, it writes this : [HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic es\Class\hdc\0002] "DevLoader"="*IOS" "DriverDesc"="Secondary IDE controller (dual fifo)" "InfPath"="VIAVSD.INF" "InfSection"="VIAIDE" "PortDriver"="ESDI_506.pdr" "ProviderName"="Microsoft" "DriverDate"="2001\\10\\18" "IDEDMADRIVE0"=hex:01 "IDEDMADRIVE1"=hex:01 "AutoInsertNotificationDrive0"=hex:01 Does that look ok to you ? |
#8
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A hack, anyone, to turn on dma ?
On Tue, 24 Jun 2008 23:37:58 -0400, "glee"
put finger to keyboard and composed: Open Device Manager, select the top entry (Computer icon), and click the Properties button. This will display the IRQ settings. Select Direct Memory Access(DMA) to view devices using DMA Channels. What DMA Channels are in use? There are 8 DMA channels but one is used by the DMA controller so 7 are available for devices. Tell us what device is using each channel. My understanding is that IDE devices connect to a "bus mastering" controller which accesses system memory directly rather than by using the motherboard's DMA controller chip. Hence Device Manager will not show any DMA channels for the hard disc controller. See http://en.wikipedia.org/wiki/Direct_memory_access ================================================== =================== A DMA transfer essentially copies a block of memory from one device to another. While the CPU initiates the transfer, it does not execute it. For so-called "third party" DMA, as is normally used with the ISA bus, the transfer is performed by a DMA controller which is typically part of the motherboard chipset. More advanced bus designs such as PCI typically use bus mastering DMA, where the device takes control of the bus and performs the transfer itself. ================================================== =================== - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
#9
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A hack, anyone, to turn on dma ?
"Shadow" sh@dow wrote in message
... When I enable dma in device manager, it writes this : [HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic es\Class\hdc\0002] "DevLoader"="*IOS" "DriverDesc"="Secondary IDE controller (dual fifo)" "InfPath"="VIAVSD.INF" "InfSection"="VIAIDE" "PortDriver"="ESDI_506.pdr" "ProviderName"="Microsoft" "DriverDate"="2001\\10\\18" "IDEDMADRIVE0"=hex:01 "IDEDMADRIVE1"=hex:01 "AutoInsertNotificationDrive0"=hex:01 Does that look ok to you ? Yes. It shows DMA enabled for both Secondary IDE Channels. I am starting to think the drive itself is going bad. -- Glen Ventura, MS MVP Shell/User, A+ http://dts-l.net/ http://dts-l.net/goodpost.htm |
#10
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A hack, anyone, to turn on dma ?
On Tue, 24 Jun 2008 23:37:58 -0400, "glee"
put finger to keyboard and composed: Open Device Manager, select the top entry (Computer icon), and click the Properties button. This will display the IRQ settings. Select Direct Memory Access(DMA) to view devices using DMA Channels. What DMA Channels are in use? There are 8 DMA channels but one is used by the DMA controller so 7 are available for devices. Tell us what device is using each channel. According to IBM's Technical Reference manual for the PC AT, the original AT had two DMA controllers (Intel 8237A-5) which could each handle four DMA channels. As was the case with its two interrupt controllers, the output of the first DMA controller was cascaded into the second DMA controller. The manual states that "DMA channels 0,1,2, and 3 are used for 8-bit data transfers, and channels 5,6, and 7 process 16-bit transfers. Channel 4 is used to cascade channels 0 through 3 to the microprocessor". So what you are seeing as "04 Direct memory access controller" in the DMA resource list under Computer Properties in DM is in fact the cascaded output of DMA controller #1. - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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