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  #1  
Old 11-08-2017, 02:54 AM
marthypaul marthypaul is offline
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Join Date: Dec 2008
Posts: 134
Default Bios chip SST 49LF004B

My comp, which I have tried to assemble has mobo with Bios chip SST 49LF004B. In PLCC 32 socket. After countless tries to update this faulty chip, finally died.
Manage to start this comp at the begining, but finally died. Was trying to hot swap in another comp with similar award bios and same socket, but none utilities works. Previous owner was using award soft to update this chip, but it is well known, that Award soft is buggy and very often made these chips useless. Doesn't matter, whether you use dos utility or win utility, which is big time "boobo".

Found old NI card with the same 32 PLCC card and downloaded soft to update this chip on the card, but it doesn't work.
Found in my junks another chip 32 PLCC,-->winbond W4F002UP12B9, was tryin' to program that by hot swap in another comp with that 32 PLCC socket, but no way "Hosey".
Have other chips, one from the NI card, and one from 547 old conner hd, in which there is also ST chip, with 512 MB, other conner old hd have 256 chips. Found old 85 HD Quantum with Microchip with 512 M memory.

I know, that BlackCat USB can program that chips without problem. But I sent it to my friend and do not have it anymore.

So JtagNT should be able to program this Sp type chips easy, it is just EEPROM, most popular is 32 PLCC eeprom.

Ordered already on ebay PLCC socket.
Think, that JtagNT should be able to program thos bios chips. In any format, in PLCC or other.

Anybody can offer help on this ???? IF yes, then I will submit the pinout data sheet for the 32 PLCC EEPROM.
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  #2  
Old 11-08-2017, 01:17 PM
usbbdm usbbdm is offline
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Join Date: Jul 2005
Posts: 8,488
Default

Quote:
Originally Posted by marthypaul View Post
My comp, which I have tried to assemble has mobo with Bios chip SST 49LF004B. In PLCC 32 socket. After countless tries to update this faulty chip, finally died.
Manage to start this comp at the begining, but finally died. Was trying to hot swap in another comp with similar award bios and same socket, but none utilities works. Previous owner was using award soft to update this chip, but it is well known, that Award soft is buggy and very often made these chips useless. Doesn't matter, whether you use dos utility or win utility, which is big time "boobo".

Found old NI card with the same 32 PLCC card and downloaded soft to update this chip on the card, but it doesn't work.
Found in my junks another chip 32 PLCC,-->winbond W4F002UP12B9, was tryin' to program that by hot swap in another comp with that 32 PLCC socket, but no way "Hosey".
Have other chips, one from the NI card, and one from 547 old conner hd, in which there is also ST chip, with 512 MB, other conner old hd have 256 chips. Found old 85 HD Quantum with Microchip with 512 M memory.

I know, that BlackCat USB can program that chips without problem. But I sent it to my friend and do not have it anymore.

So JtagNT should be able to program this Sp type chips easy, it is just EEPROM, most popular is 32 PLCC eeprom.

Ordered already on ebay PLCC socket.
Think, that JtagNT should be able to program thos bios chips. In any format, in PLCC or other.

Anybody can offer help on this ???? IF yes, then I will submit the pinout data sheet for the 32 PLCC EEPROM.
When you are ready, give me a message and I can try to help you.
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  #3  
Old 02-10-2020, 02:38 PM
thegato thegato is offline
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Join Date: Apr 2010
Posts: 2
Default Technicolor CGA4233 Cable modem

The modem has a serial port and what appears to be a jtag.
How can i try it?


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  #4  
Old 02-12-2020, 04:42 AM
geant90 geant90 is offline
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Join Date: Dec 2010
Posts: 28
Default SB6183 Dump without desolder

Long time folks! Anyone figured a way to dump the SB6183 without desoldering?
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  #5  
Old Yesterday, 08:08 AM
Killswitch Killswitch is offline
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Join Date: Mar 2010
Posts: 440
Default Restoring DCT3416 back to life

Welcome to all past/present Cable Box Testers ! I pulled one of my fave boxes out of closet, a first generation HDMI w/ 160 GB Hard Drive and found that it had gone into Hunt mode and lost its identity. And, now that a new Firmware has been introduced, it lost its NVRAM and, this is where the Testing begins. This unit uses the EJTAG64 platform and the DCT6412 dll which is identical. After attaching a 10 pin Header onto the board, even an old head like me has been unable to start Testing. All I need do is to copy a valid 3416 NVRAM back on board and, I've found this to be exceptionally difficult to accomplish, just like it was several years ago. It will not Detect the Intel Flash on board, supplying values like 0000000 or FFFFFFF. And, DEBUG ON appears but, setting the NVRAM moves forward only one block on the progress scale and runs no faster than 20 Kbs and quickly hangs due to Watchdog. This box was always difficult back in the day and, remains so today. I DO want to revive this unit and, use it to record stuff. The Watchdog shouldn't matter with a 256 Kb NVRAM. I'm stuck and a bit angry. Are there any creative ideas I can use to speed the Testing process ? Thanx and, a goodday to one and all.
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