Полигон-2

Geners С какого? PCI исторически 33 мегагерца, возьми любую современную мать, ни какими 66 мегагерцами там и не пахнет, а все потому, что сначала 64 бит, а потом и 66 мегагерц для PCI шинами были задокументированы как расширения. Не надо вешать лапшу на уши. Или говори точнее, что хотел сказать.

Geners  Вообще-то можно у PCI  карточки спросить, на какой частоте она хочет работать. lspci -v -v .
90% 32-бит PCI работает на 33.

Geners  Именно. Большинство чипсетов для P1..PII и часть PIII юзало для связки северный-южный мост обычную шину PCI. А чипы южных мостов в большинстве работали на 33MHz. У VIA это решилось начиная с 686B, а Intel после PIIX4 просто перешел на хабовую структуру в i810.
Так что 66MHz на шине PCI встречается довольно редко и только в современных мамках. И то если на маме нету интегрированной перифирии типа SCSI, LAN и Sound.
Вот например современные дешовые SATA PCI почти все умеют 66MHz.

alecv написал:

[q]

Вообще-то можно у PCI карточки спросить, на какой частоте она хочет работать.

[/q]


[root@localhost user]# lspci -v
00:00.0 Host bridge: Intel Corporation Server Memory Contoller Hub (rev b1)
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: bus master, fast devsel, latency 0
        Capabilities: [50] Power Management version 2
        Capabilities: [58] Message Signalled Interrupts: 64bit- Queue=0/1 Enable-
        Capabilities: [6c] Express Root Port (Slot-) IRQ 0
00:02.0 PCI bridge: Intel Corporation Server PCI Express x8 Port 2-3 (rev b1) (prog-if 00 [Normal decode]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=03, subordinate=07, sec-latency=0
        I/O behind bridge: 0000e000-0000efff
        Memory behind bridge: fdf00000-fdffffff
        Capabilities: [50] Power Management version 2
        Capabilities: [58] Message Signalled Interrupts: 64bit- Queue=0/1 Enable+
        Capabilities: [6c] Express Root Port (Slot-) IRQ 0
00:03.0 PCI bridge: Intel Corporation Server PCI Express x4 Port 3 (rev b1) (prog-if 00 [Normal decode]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
        Capabilities: [50] Power Management version 2
        Capabilities: [58] Message Signalled Interrupts: 64bit- Queue=0/1 Enable+
        Capabilities: [6c] Express Root Port (Slot-) IRQ 0
00:10.0 Host bridge: Intel Corporation Server Error Reporting Registers (rev b1)
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: fast devsel
00:10.1 Host bridge: Intel Corporation Server Error Reporting Registers (rev b1)
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: fast devsel
00:10.2 Host bridge: Intel Corporation Server Error Reporting Registers (rev b1)
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: fast devsel
00:11.0 Host bridge: Intel Corporation Reserved Registers (rev b1)
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: fast devsel
00:13.0 Host bridge: Intel Corporation Reserved Registers (rev b1)
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: fast devsel
00:15.0 Host bridge: Intel Corporation Server FBD Registers (rev b1)
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: fast devsel
00:16.0 Host bridge: Intel Corporation Server FBD Registers (rev b1)
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: fast devsel
00:1d.0 USB Controller: Intel Corporation Enterprise Southbridge UHCI USB #1 (rev 09) (prog-if 00 [UHCI]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: bus master, medium devsel, latency 0, IRQ 233
        I/O ports at cb80 [size=32]
00:1d.1 USB Controller: Intel Corporation Enterprise Southbridge UHCI USB #2 (rev 09) (prog-if 00 [UHCI]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: bus master, medium devsel, latency 0, IRQ 225
        I/O ports at cc00 [size=32]
00:1d.2 USB Controller: Intel Corporation Enterprise Southbridge UHCI USB #3 (rev 09) (prog-if 00 [UHCI]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: bus master, medium devsel, latency 0, IRQ 217
        I/O ports at cc80 [size=32]
00:1d.3 USB Controller: Intel Corporation Enterprise Southbridge UHCI USB #4 (rev 09) (prog-if 00 [UHCI]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: bus master, medium devsel, latency 0, IRQ 169
        I/O ports at cd00 [size=32]
00:1d.7 USB Controller: Intel Corporation Enterprise Southbridge EHCI USB (rev 09) (prog-if 20 [EHCI]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: bus master, medium devsel, latency 0, IRQ 233
        Memory at fddff800 (32-bit, non-prefetchable) [size=1K]
        Capabilities: [50] Power Management version 2
        Capabilities: [58] Debug port
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d9) (prog-if 01 [Subtractive decode]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
        I/O behind bridge: 0000d000-0000dfff
        Memory behind bridge: fde00000-fdefffff
        Prefetchable memory behind bridge: 00000000f0000000-00000000f7f00000
        Capabilities: [50] #0d [0000]
00:1f.0 ISA bridge: Intel Corporation Enterprise Southbridge LPC (rev 09)
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: bus master, medium devsel, latency 0
00:1f.1 IDE interface: Intel Corporation Enterprise Southbridge PATA (rev 09) (prog-if 8a [Master SecP PriP]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: bus master, medium devsel, latency 0, IRQ 217
        I/O ports at >unassigned>
        I/O ports at >unassigned>
        I/O ports at >unassigned>
        I/O ports at >unassigned>
        I/O ports at fff0 [size=16]
00:1f.2 IDE interface: Intel Corporation Enterprise Southbridge SATA IDE (rev 09) (prog-if 8f [Master SecP SecO PriP PriO]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 225
        I/O ports at cf80 [size=8]
        I/O ports at cf00 [size=4]
        I/O ports at ce80 [size=8]
        I/O ports at ce00 [size=4]
        I/O ports at cd80 [size=16]
        Memory at fddffc00 (32-bit, non-prefetchable) [size=1K]
        Capabilities: [70] Power Management version 2
00:1f.3 SMBus: Intel Corporation Enterprise Southbridge SMBus (rev 09)
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: medium devsel, IRQ 11
        I/O ports at 0400 [size=32]
01:01.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 10)
        Subsystem: C-Media Electronics Inc CMI8738/C3DX PCI Audio Device
        Flags: bus master, medium devsel, latency 224, IRQ 169
        I/O ports at d700 [size=256]
        Capabilities: [c0] Power Management version 2
01:02.0 VGA compatible controller: ATI Technologies Inc ES1000 (rev 02) (prog-if 00 [VGA]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10c9
        Flags: bus master, stepping, medium devsel, latency 64, IRQ 11
        Memory at f0000000 (32-bit, prefetchable) [size=128M]
        I/O ports at d800 [size=256]
        Memory at fdef0000 (32-bit, non-prefetchable) [size=64K]
        Expansion ROM at fde00000 [disabled] [size=128K]
        Capabilities: [50] Power Management version 2
03:00.0 PCI bridge: Intel Corporation Enterprise Southbridge PCI Express Upstream Port (rev 01) (prog-if 00 [Normal decode]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Flags: bus master, fast devsel, latency 0
        Bus: primary=03, secondary=05, subordinate=07, sec-latency=0
        I/O behind bridge: 0000e000-0000efff
        Memory behind bridge: fdf00000-fdffffff
        Capabilities: [44] Express Upstream Port IRQ 0
        Capabilities: [70] Power Management version 2
        Capabilities: [80] #0d [0000]
03:00.3 PCI bridge: Intel Corporation Enterprise Southbridge PCI Express to PCI-X Bridge (rev 01) (prog-if 00 [Normal decode]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Flags: bus master, fast devsel, latency 0
        Bus: primary=03, secondary=04, subordinate=04, sec-latency=64
        Capabilities: [44] Express PCI/PCI-X Bridge IRQ 0
        Capabilities: [6c] Power Management version 2
        Capabilities: [80] #0d [0000]
        Capabilities: [d8] PCI-X bridge device
05:00.0 PCI bridge: Intel Corporation Enterprise Southbridge PCI Express Downstream Port E1 (rev 01) (prog-if 00 [Normal decode]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Flags: bus master, fast devsel, latency 0
        Bus: primary=05, secondary=07, subordinate=07, sec-latency=0
        Capabilities: [44] Express Downstream Port (Slot-) IRQ 0
        Capabilities: [60] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+
        Capabilities: [70] Power Management version 2
        Capabilities: [80] #0d [0000]
05:02.0 PCI bridge: Intel Corporation Enterprise Southbridge PCI Express Downstream Port E3 (rev 01) (prog-if 00 [Normal decode]<img src="smiles/wink.gif" align=absmiddle alt=";)">
        Flags: bus master, fast devsel, latency 0
        Bus: primary=05, secondary=06, subordinate=06, sec-latency=0
        I/O behind bridge: 0000e000-0000efff
        Memory behind bridge: fdf00000-fdffffff
        Capabilities: [44] Express Downstream Port (Slot-) IRQ 0
        Capabilities: [60] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+
        Capabilities: [70] Power Management version 2
        Capabilities: [80] #0d [0000]
06:00.0 Ethernet controller: Intel Corporation PRO/1000 EB Network Connection with I/O Acceleration (rev 01)
        Subsystem: Fujitsu Siemens Computer GmbH Unknown device 10a8
        Flags: bus master, fast devsel, latency 0, IRQ 50
        Memory at fdfe0000 (32-bit, non-prefetchable) [size=128K]
        I/O ports at ef80 [size=32]
        Capabilities: [c8] Power Management version 2
        Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+
        Capabilities: [e0] Express Endpoint IRQ 0


UFO  - два ключика -v: lspci -v -v

Вот типичный Adaptec: 66Mhz-  - то есть не поддерживает.

01:0a.0 SCSI storage controller: Adaptec AIC-7860 (rev 01)        
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-        
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- >TAbort- >MAbort- >SERR- >PERR+
Latency: 32 (1000ns min, 1000ns max), Cache Line Size 08
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at c400 [disabled] [ size=256 ]
Region 1: Memory at d5001000 (32-bit, non-prefetchable) [ size=4K ]