Comments for What's All This Brouhaha? http://whats.all.this.brouhaha.com miscellaneous musings and random rantings Tue, 31 Jan 2012 21:21:58 +0000 hourly 1 http://wordpress.org/?v=3.1.3 Comment on ksim 8080 simulator released by lizardb0y http://whats.all.this.brouhaha.com/2012/01/31/ksim-8080-simulator-released/comment-page-1/#comment-24998 lizardb0y Tue, 31 Jan 2012 21:21:58 +0000 http://whats.all.this.brouhaha.com/?p=970#comment-24998 What a great piece of work. I'll be sure to have a play with this soon :) What a great piece of work. I’ll be sure to have a play with this soon :)

]]> Comment on Think the US government wants you to be safe from Mad Cow Disease? Think again! by Leticia http://whats.all.this.brouhaha.com/2007/06/10/think-the-us-government-wants-you-to-be-safe-from-mad-cow-disease-think-again/comment-page-1/#comment-24965 Leticia Tue, 31 Jan 2012 14:17:44 +0000 http://whats.all.this.brouhaha.com/?p=522#comment-24965 Of csorue the U.S. government doesn’t want the complete testingof beef. Just follow the money. Big cattle lobyist have most of the politiciansin their back pockets. Remember the dairy farm that was forced to stop advertising the factthat their cows are steroid free. Of csorue the U.S. government doesn’t want the complete testingof beef. Just follow the money. Big cattle lobyist have most of the politiciansin their back pockets. Remember the dairy farm that was forced to stop advertising the factthat their cows are steroid free.

]]> Comment on SSN Database for Sale by tony http://whats.all.this.brouhaha.com/2007/07/27/ssn-database-for-sale/comment-page-1/#comment-24958 tony Tue, 31 Jan 2012 12:52:29 +0000 http://whats.all.this.brouhaha.com/?p=569#comment-24958 Still sale base? wanna buy, plz response Still sale base? wanna buy, plz response

]]> Comment on SSN Database for Sale by mike smith http://whats.all.this.brouhaha.com/2007/07/27/ssn-database-for-sale/comment-page-1/#comment-24337 mike smith Mon, 23 Jan 2012 13:10:08 +0000 http://whats.all.this.brouhaha.com/?p=569#comment-24337 Is ssn datas still available. Is ssn datas still available.

]]> Comment on Fixed a bug in the FPGA-Elf by Eric http://whats.all.this.brouhaha.com/2010/08/09/fixed-a-bug-in-the-fpga-elf/comment-page-1/#comment-21070 Eric Thu, 15 Dec 2011 21:45:31 +0000 http://whats.all.this.brouhaha.com/?p=869#comment-21070 I haven't released it as open-source yet, mostly because I haven't gotten around to testing the full instruction set and interrupts. I hope to finish that in January. The core is cycle-accurate at the machine cycle level, but not at the clock cycle level. The CDP1802 uses eight clock cycles per machine cycle, while my core uses only one clock cycle per machine cycle. This means that the bus interface is not at all similar to the CDP1802. It's more like a 6502 or 6800 bus. It should be possible to write a wrapper that interfaces the core to a real CDP1802 bus. Such a wrapper would have have a counter to divide by 8 to get the core clock, generate the TPA and TPB strobes, etc. I haven't done that yet. To make the 1802 core work with a VGA monitor, you would need an 1861 core, which I have not completed, and a simple scan-converter to take the 1861 core output, buffer it, and drive the VGA output at normal VGA scan and pixel rates. I haven’t released it as open-source yet, mostly because I haven’t gotten around to testing the full instruction set and interrupts. I hope to finish that in January.

The core is cycle-accurate at the machine cycle level, but not at the clock cycle level. The CDP1802 uses eight clock cycles per machine cycle, while my core uses only one clock cycle per machine cycle. This means that the bus interface is not at all similar to the CDP1802. It’s more like a 6502 or 6800 bus.

It should be possible to write a wrapper that interfaces the core to a real CDP1802 bus. Such a wrapper would have have a counter to divide by 8 to get the core clock, generate the TPA and TPB strobes, etc. I haven’t done that yet.

To make the 1802 core work with a VGA monitor, you would need an 1861 core, which I have not completed, and a simple scan-converter to take the 1861 core output, buffer it, and drive the VGA output at normal VGA scan and pixel rates.

]]> Comment on Fixed a bug in the FPGA-Elf by Dave S http://whats.all.this.brouhaha.com/2010/08/09/fixed-a-bug-in-the-fpga-elf/comment-page-1/#comment-21062 Dave S Thu, 15 Dec 2011 18:30:20 +0000 http://whats.all.this.brouhaha.com/?p=869#comment-21062 Are the VHDL files and any other supporting documentation available for download? I would love to be able to try this at home on my own FPGA demo board. I'm wondering if this is cycle-accurate to the original 1802? Could it be used in conjunction with an 1861, or is a VHDL version of the 1861 available??? My Spartan FPGA board has a VGA output connector on it, what would it take to make things work with an emulated 1861 going to a VGA monitor? Are the VHDL files and any other supporting documentation available for download? I would love to be able to try this at home on my own FPGA demo board. I’m wondering if this is cycle-accurate to the original 1802? Could it be used in conjunction with an 1861, or is a VHDL version of the 1861 available???

My Spartan FPGA board has a VGA output connector on it, what would it take to make things work with an emulated 1861 going to a VGA monitor?

]]> Comment on RAID Capacity Expansion, the Suboptimal Way, or How Not to Have a Fun Weekend by Jason http://whats.all.this.brouhaha.com/2007/11/19/raid-capacity-expansion-the-suboptimal-way-or-how-not-to-have-a-fun-weekend/comment-page-1/#comment-20230 Jason Mon, 05 Dec 2011 21:33:49 +0000 http://whats.all.this.brouhaha.com/?p=608#comment-20230 Hey Eric! I was just googling OCE and wanting to do my own R6 unit that's been working happily with a 965se-12 and now having second thoughts!!! I think any of us in the I.T. world has had one of "those" weekends ;-) Scary thing is, I came across this... http://kb.lsi.com/KnowledgebaseArticle15095.aspx And near the bottom its says "A 3ware support engineer will create a script for you that will rewrite the disk drive RAID table information." sounds shaky to me.. I've had 12-750gb units running solid for 4 years and want to start putting 1+tb units in.. slowly. But the whole idea sounds like a disaster waiting to happen!! Great job on your end and kudos for what you did and went through!!! I guess tape is the only true backup!! ;-) Jason Hey Eric!

I was just googling OCE and wanting to do my own R6 unit that’s been working happily with a 965se-12 and now having second thoughts!!!

I think any of us in the I.T. world has had one of “those” weekends ;-)

Scary thing is, I came across this…
http://kb.lsi.com/KnowledgebaseArticle15095.aspx

And near the bottom its says “A 3ware support engineer will create a script for you that will rewrite the disk drive RAID table information.”

sounds shaky to me.. I’ve had 12-750gb units running solid for 4 years and want to start putting 1+tb units in.. slowly.

But the whole idea sounds like a disaster waiting to happen!! Great job on your end and kudos for what you did and went through!!!

I guess tape is the only true backup!! ;-)
Jason

]]> Comment on RAID Capacity Expansion, the Suboptimal Way, or How Not to Have a Fun Weekend by Eric http://whats.all.this.brouhaha.com/2007/11/19/raid-capacity-expansion-the-suboptimal-way-or-how-not-to-have-a-fun-weekend/comment-page-1/#comment-18388 Eric Mon, 07 Nov 2011 23:05:53 +0000 http://whats.all.this.brouhaha.com/?p=608#comment-18388 I'm now using RAID 6 on some new server machines, using the 3ware 9750. At some point it would be nice to learn how to generate the second parity data. Apparently this involves slightly more complicated Galois field arithmetic than the first parity, which is just exclusive OR. Anyhow, I haven't yet had time to look into it. I don't see any way that FUSE can help with RAID metadata since FUSE operates at the filesystem level. If the Linux md software RAID is sufficiently configurable, it might be possible to use it with drives pulled from a proprietary RAID, but I haven't looked at that either. I’m now using RAID 6 on some new server machines, using the 3ware 9750. At some point it would be nice to learn how to generate the second parity data. Apparently this involves slightly more complicated Galois field arithmetic than the first parity, which is just exclusive OR. Anyhow, I haven’t yet had time to look into it.

I don’t see any way that FUSE can help with RAID metadata since FUSE operates at the filesystem level. If the Linux md software RAID is sufficiently configurable, it might be possible to use it with drives pulled from a proprietary RAID, but I haven’t looked at that either.

]]> Comment on RAID Capacity Expansion, the Suboptimal Way, or How Not to Have a Fun Weekend by Dominik http://whats.all.this.brouhaha.com/2007/11/19/raid-capacity-expansion-the-suboptimal-way-or-how-not-to-have-a-fun-weekend/comment-page-1/#comment-18387 Dominik Mon, 07 Nov 2011 22:58:04 +0000 http://whats.all.this.brouhaha.com/?p=608#comment-18387 Hi Eric, great article. I'll be hopefully not in the situation where I have to do the same. But as I'm using RAID6 this is to my understanding only a minor change to r5test to handle the additional parity data. Anyway, I was just curios if someone maybe already wrote a FUSE wrapper to handle different metadata of RAID controllers. :-) Hi Eric,
great article.
I’ll be hopefully not in the situation where I have to do the same. But as I’m using RAID6 this is to my understanding only a minor change to r5test to handle the additional parity data.
Anyway, I was just curios if someone maybe already wrote a FUSE wrapper to handle different metadata of RAID controllers. :-)

]]> Comment on USB tethering an Android phone to an OpenWRT router by Nikolas Britton http://whats.all.this.brouhaha.com/2010/07/21/usb-tethering-an-android-phone-to-an-openwrt-router/comment-page-1/#comment-16336 Nikolas Britton Sat, 22 Oct 2011 11:15:11 +0000 http://whats.all.this.brouhaha.com/?p=834#comment-16336 Hi, You can solve that problem by installing udev and usbutils packages... read more about it here: https://forum.openwrt.org/viewtopic.php?pid=146384 Hi,

You can solve that problem by installing udev and usbutils packages… read more about it here: https://forum.openwrt.org/viewtopic.php?pid=146384

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