| Products > Test Equipment |
| Agilent 54835A scope (4 channel 1GHz / 4Gs/s) repair & uphack |
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| Converter:
Hello everyone. Now I was able to install a 1400MHz P-III Tualatin processor. This required editing the BIOS (a lot of attempts before the success). To install it, you needed an adapter PCB. Of some tests, its performance is higher than the original K6-2-300 in 4 times. It is even ahead of some P4. I also added preventively small radiators to the power converter. I was surprised when I measured the frequency of the trigger restart. This amounted to 54 microseconds (18-19 kHz). This is many times higher than the one declared in the datasheet of 2 kHz. In the photo - the impulses start trigger 54845, measured using LeCroy. Indeed, I see a lot of "threads" this device processes in real-time mode. |
| nctnico:
--- Quote from: Converter on January 22, 2018, 06:57:16 pm ---Hello everyone. Now I was able to install a 1400 MHz P-III processor. This required editing the BIOS (a lot of attempts before the success). --- End quote --- So cool! :-+ :-+ I'd love to get some extra performance. Unfortunately it seems yours has a different motherboard than mine so your BIOS is likely not to work on my scope. |
| Converter:
nctnico, what is your motherboard? It seems to me that any motherboard that supports the Coppermine core is suitable for upgrading BIOS. I can give contacts to the person who will help you. |
| nctnico:
--- Quote from: Converter on January 22, 2018, 09:22:52 pm ---nctnico, what is your motherboard? It seems to me that any motherboard that supports the Coppermine core is suitable for upgrading BIOS. I can give contacts to the person who will help you. --- End quote --- My motherboard is the original VA503-A Super Socket 7 motherboard but I now realise that you must have changed the motherboard. |
| Converter:
--- Quote from: nctnico on January 22, 2018, 09:27:53 pm ---My motherboard is the original VA503-A Super Socket 7 motherboard but I now realise that you must have changed the motherboard. --- End quote --- Yes, as I wrote in this thread, I installed the ZIDA TomatoBoard ZX98-CT motherboard (for Socket 370) and it was immediately successful with the HP54845A (with the Coppermine processor). It took only a little effort to translate it into a Tualatin processor. These Baby-AT motherboards today are very cheap, so it makes sense to buy and install them. I buy them in my region for only $4-6. I also got the motherboard PC Partner BSBS3-T871B http://support.pcpartner.com/support/bios/i810.htm (see attached photo). It has a newer intelĀ® 810 series chipsets. This is better than chipset Intel 443BX/ZX in that it supports IDE Ultra DMA4-66 (and not only DMA2-33). |
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