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mtx500
Joined: 21 Nov 2003
Posts: 117
Location: Nuremberg, Germany
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 Posted: Tue Aug 07, 2007 10:50 am Post subject: |
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| Marcin wrote: | I read topic on cpu-museum.de forum and faster Nexgens need faster cache - best 10 ns. I have soldered Etron Tech 12 ns  |
Yes, that could very well be the limit here
You should have bought the original motherboard too, even if damaged! I once tried to get these 10ns cache chips for replacing the chips on my motherboard, but no way.
Here are the jumper settings:
| Code: | JP01 Parallel DMA, 1-2 = DMA3, 2-3 = DMA1 (default)
JP02 CRT Type: IN = Color, OUT = Mono (default)
JP03 ?
JP04-08 Onboard IDE: JP04 JP05 JP06 JP07 JP08
IN IN 2-3 X 1-2 with legacy IRQ (default)
OUT OUT 2-3 2-3 2-3 with PCI INT
OUT OUT 1-2 2-3 X disabled
JP09-11 NexBus-Frequency: JP11 JP10 JP09 NexBus CPU BIOS PCI sync
OUT OUT OUT 35 70 P75 23,3
OUT OUT IN 37,48 75 P80 25
OUT IN OUT 42 84 P90 28
OUT IN IN 46,53 93 P100 31
IN OUT OUT 51 102 P110 34
IN OUT IN 55,5 111 P120 37
IN IN OUT 60,03 120 ? 40
IN IN IN 64,98 130 ? 43,4
NexBus frequency is shown exact, CPU frequency (= 2 x NexBus frequency) is shown rounded.
The PCI bus frequency is 32 MHz when Async (JP12 in), or 2/3 of the NexBus frequency when Sync (JP12 out).
JP12,16-17 PCI-Bus ASYNC / SYNC P12 P16 P17
IN OUT OUT ASYNC (default)
OUT IN IN SYNC
JP13 ? (no pins soldered on board)
JP14 1-2 = Fast Page Mode (FPM) (default)/ 2-3 EDO
JP15 Turbo LED connector
JP18 Parallel DMA, 1-2 = DMA3, 2-3 = DMA1
JP19 ? (no pins soldered on board)
JP20 Clear CMOS Memory: IN = Clear, OUT = Normal (default)
JP21 Clock Current Reference (signal IREF, pin 323 of CPU) and Vss (no pins soldered on board)
JP22 resistor 1.6 KOhm set between pin 2 and 3. Is this for the CPU core voltage?
J01 (no pins soldered on board)
J03 ?
J04 COM2
J05 Floppy
J06 COM1
J07 assignment of COMx to IRQ3/4 2x2 pins, horizontal = COM1:IRQ4 and COM2:IRQ3 (default),
vertical = COM1:IRQ3 and COM2:IRQ4
J08 Secondary IDE
J09 first ISA-Slot
J10 first PCI-Slot
J11 second PCI-Slot
J12 third PCI-Slot
J13 Primary IDE
J15 HD LED
J16 Keylock/Power LED connector
J17 Speaker connector
J18 Reset switch
J19 second ISA-Slot
J20 third ISA-Slot
J21 fourth ISA-Slot
J25 +12V CPU fan connector
P1 Keyboard connector
P2 Power connector |
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Marcin
Joined: 02 Jan 2005
Posts: 8519
Location: Poland
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gshv
Joined: 01 Feb 2003
Posts: 7898
Location: Fairfax, VA USA
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| Posted: Tue Aug 07, 2007 5:46 pm Post subject: |
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| Marcin wrote: | | Gennadiy do you need results to upload on your website ? |
Not now. Later this month I will add new pages where it'll be possible for any registered forum user to upload new benchmarks and view them online.
Gennadiy |
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Marcin
Joined: 02 Jan 2005
Posts: 8519
Location: Poland
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| Posted: Tue Oct 09, 2007 12:56 pm Post subject: |
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So late ... Today I updated BIOS in my Nexgen PCI motherboard. I got Nexgen CPU from Robev and wanted to test also. CPU was recognized as P100 (because of jumpers). After flashing BIOS to this version from mtx500 board recognized CPU as P110 without changing jumper settings 
I will try boot it as P120.
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isa-d
Joined: 16 Aug 2006
Posts: 2984
Location: Italy
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| Posted: Tue Oct 09, 2007 1:41 pm Post subject: |
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LZF70000 have an identical NexGen without markings for the speed and describe it like a NexGen P110, may be he pulled out the CPU from a system and so knew the exact model also without markings.
Can I listed my NexGen without markings like a P110? |
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Marcin
Joined: 02 Jan 2005
Posts: 8519
Location: Poland
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| Posted: Tue Oct 09, 2007 2:52 pm Post subject: |
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LZF70000 listed it as P110 because some of collectors are describe that CPU as P110 on their websites (include me  ) That will be most propably version in my opinion.
But Robev's not marked Nexgen 586 with big heatspreader have IBM logo at back side so that is advantage to believe it is different model than P90 but that is only suspect
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Robev
Joined: 10 Mar 2006
Posts: 3693
Location: New Zealand
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| Posted: Tue Oct 09, 2007 11:36 pm Post subject: |
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| Marcin wrote: | LZF70000 listed it as P110 because some of collectors are describe that CPU as P110 on their websites (include me ) That will be most propably version in my opinion.
But Robev's not marked Nexgen 586 with big heatspreader have IBM logo at back side so that is advantage to believe it is different model than P90 but that is only suspect |
 So it has arrived already?
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Marcin
Joined: 02 Jan 2005
Posts: 8519
Location: Poland
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| Posted: Wed Oct 10, 2007 12:29 am Post subject: |
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| Robev wrote: | | So it has arrived already? |
Yes it arrived already. In work condition. But I cann't run this unit as P120
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Minuteman
Joined: 21 May 2003
Posts: 331
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| Posted: Sun Oct 28, 2007 7:06 am Post subject: |
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Indeed, the cache chips are the limiting factor...I have a P120 but I never couldn't run it at this speed.
The NexGen's without markings are usually P90 chips. All the other ones I know had a marking on the back. |
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