I don't know about anyone else but the dental floss idea didn't work at all for me, the floss interferes with the pins.
I had this idea on how to remove the chip easily, but I haven't tried it. Just get some strong epoxy and glue onto the top surface of the flashrom something to act as a handle. After it's dry, use that to pull the chip out.
JB Weld might work.
-Dave
On 9/14/05, Dave Ashley linuxbios@xdr.com wrote:
I don't know about anyone else but the dental floss idea didn't work at all for me, the floss interferes with the pins.
I had this idea on how to remove the chip easily, but I haven't tried it. Just get some strong epoxy and glue onto the top surface of the flashrom something to act as a handle. After it's dry, use that to pull the chip out.
JB Weld might work.
If you are doing that much LB work then you _really_ need and eprom emulator. It will pay for itself in the time you save waiting on the flash to program.
Tech Tools has some good ones for about $300 and the 16bit DOS loader programs that they provide in addition to the windows clients will run under DOSEMU fine. (As long as you use the fast parallel port option) The windows clients might run under WINE but I've not tried.
Seriously. Get an emulator. You will be happy you did.
You will also probally need a DIP to PLCC adapter. So I guess the real total is $500 (depending on the adapter you buy) . Still its totally worth the money.
On 09/14/2005 01:38 PM, Richard Smith wrote:
If you are doing that much LB work then you _really_ need and eprom emulator.
I see from this page: http://www.antratek.nl/EPROM-emulators-e.html
It will pay for itself in the time you save waiting on the flash to program.
More than that I think. How smart are these devices? Can one single step through instructions or dump out the registers on the CPU.(?)
Tech Tools has some good ones for about $300 and the 16bit DOS loader programs that they provide in addition to the windows clients will run under DOSEMU fine.
Interesting. Do you have some URL's? The FAQ doesn't contain anything like this in it.
(As long as you use the fast parallel port option) The windows clients might run under WINE but I've not tried.
Perhaps you can send some screenshots of the software or email some of the capabilities of using an emulator. Man, if only someone made one that hooked up to gdb, then we would be in business.
Seriously. Get an emulator. You will be happy you did.
Perhaps. This is the first I've heard of them so I'd like to see what is out there in the market.
You will also probally need a DIP to PLCC adapter.
Right. The adapter size is likely to be a problem. Some boards will not have the space to fit such an adapter. Guess it's back to the making adapters game.
Thanks for the pointers, Jeff
On 09/14/2005 06:44 PM, Jeff Carr wrote:
On 09/14/2005 01:38 PM, Richard Smith wrote:
Tech Tools has some good ones for about $300 and the 16bit DOS loader
Perhaps you can send some screenshots of the software or email some of the capabilities of using an emulator.
Sorry, I should have googled more first. The manuals are at: http://www.tech-tools.com/romtools.htm
Jeff
On Thu, Sep 15, 2005 at 07:02:20AM -0700, Dave Ashley wrote:
I looked at the FlexROM III, it appears to emulate just flat 8 or 16 bit devices. PLCC's are more complicated, they frequently make use of an LPC interface that clocks in 4 bits of data at a time (as I recall) to get the address into the chip, then clocks out 4 bits of data at a time. I think an operation is 16 bits at a time. This is all transparent from the system's perspective. However behind the scenes it is a complicated dance.
Cycles are 1, 2, 4 or 128 bytes. Required signals are 4 bit A/D bus, cycle sync, reset and clock. Last two are same as on PCI.
LPC is a pretty neat bus. Making an emulator would be fun..
On Wed, Sep 14, 2005 at 06:44:30PM -0700, Jeff Carr wrote:
More than that I think. How smart are these devices? Can one single step through instructions or dump out the registers on the CPU.(?)
I don't think so, it's only a ROM emulator, not a CPU debugger. As for single stepping, that won't work either because the ROM has a (very short) limited response time, it can't just block on reads.
the capabilities of using an emulator. Man, if only someone made one that hooked up to gdb, then we would be in business.
I'm not sure how gdb would work with a ROM emulator, but on the other hand I haven't done too much advanced stuff with gdb. :(
You will also probally need a DIP to PLCC adapter.
Right. The adapter size is likely to be a problem. Some boards will not have the space to fit such an adapter. Guess it's back to the making adapters game.
Try to find one that builds straight up from the socket. I was using something pretty good from ICEtech or similar when last working with BIOS things, it didn't have the DIP size board until about an inch up from the PLCC socket.
//Peter
On Wednesday 14 September 2005 21:56, Dave Ashley wrote:
I don't know about anyone else but the dental floss idea didn't work at all for me, the floss interferes with the pins.
I had this idea on how to remove the chip easily, but I haven't tried it. Just get some strong epoxy and glue onto the top surface of the flashrom something to act as a handle. After it's dry, use that to pull the chip out.
Instead of epoxy you might use hot-glue (or whats it called), or, even better, "Power Strip" - a removable 2-side-glue flexible tape...
Guido Fiala wrote:
On Wednesday 14 September 2005 21:56, Dave Ashley wrote:
I don't know about anyone else but the dental floss idea didn't work at all for me, the floss interferes with the pins.
I had this idea on how to remove the chip easily, but I haven't tried it. Just get some strong epoxy and glue onto the top surface of the flashrom something to act as a handle. After it's dry, use that to pull the chip out.
Instead of epoxy you might use hot-glue (or whats it called), or, even better, "Power Strip" - a removable 2-side-glue flexible tape...
It's a good idea, but keep in mind that some programmers (such as my Needhams) have a cover that closes over the chip to program it, so a removal knob might interfere with closing the cover. Maybe the programmer will make contact anyway with the cover open, haven't tried it so I don't know.
Steve
On Wed, Sep 14, 2005 at 12:56:42PM -0700, Dave Ashley wrote:
I don't know about anyone else but the dental floss idea didn't work at all for me, the floss interferes with the pins.
Try putting the floss diagonally under the chip?
//Peter
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Dave Ashley -
Guido Fiala -
Jeff Carr -
Peter Stuge -
Richard Smith -
Steve Gehlbach