[Techtoolslist] Bytek Fireman 8x (Probe results)

[Martin White]

Isn't this just sounding more and more like a simple case of a faulty
eprom that needs discarding?

On Tue, October 3, 2006 1:53 pm, Cameron Rector wrote:

>   First of all; I have to say my troubles are looking more and more self

> induced.

>

>   I talked to some people on the techtool fourm and got a tip to watch A11

> with a logic probe while programming. Well intresting enough; A11 goes

> high right at 800h and stays high though the rest of the programming

> (that is what it shoud do). So this got me thinking of performing a few

> more tests.

>

>   1. first I loaded a blank eprom into ram, then I viewed the ram and saw

> it was filled with FF (which is correct). Then I performed a verify and

> it passes (and it should). I next loaded my binary file (I am assuming

> its binary) and re-ran verify and it fails (and it should). Then I

> program the ram (containing the file) into the eprom and the post

> program verify fails (and it should not). So I see it fails at 800h (as

> it always does) and it shows ram = 00 and the device = A2 (or something

> simular, I forgot the exact number). So at this point I see from 800h on

> things don't match up. I next load ram again with FF just to make sure

> it is clear and then download the device into ram. I then view the ram

> at 800h and it says 800h = 00. I again run verify and again it fails at

> 800h saying the same thing ram = 00 and the device = A2.

>

>   Now how the heck can that happen? I just downloaded the device into ram

> and verified it against its own contents and it fails showing it has a

> different number than what it downloaded.

>

>   2. Just to test the hardware of the programmer. I verified a new blank

> eprom and it passed all FF. I then loaded a constant 00 into ram and

> programmed the eprom and it passes. This tells me that I can take all

> highs at all pins and change them to all lows at all pins. This also

> tell me that the programmer must be doing the hardware thing correctly.

>

>   3. I programmed another blank eprom with an abitrary constant CC and it

> passes. CC is loaded in all locations.

>

>   I hope you can follow all of this.

>   Thank you for all the help folks!

>   Cameron

>

>

>

> John Robertson <jrr at flippers.com> wrote:        Yes, Cameron, the 2532

> does go to FFFh, a 2716 fills to 7FFh.

>

>

>   If you have a logic probe with a 'memory' you can use that on a read to

> see if the A11 toggles. You can use a voltmeter as well...Pin 12 is Gnd,

> I would stuff thin wires into the two socket opening and clip the

> voltmeter to them.

>

>

>   If it toggles on a read (it will start Low, then go High at 800h) but

> not on write (write FFs that you just 'read') then you have more

> information.

>

>

>

>

>   John :-#)#

>

>

>   At 6:02 PM -0700 10/1/06, Cameron Rector wrote:

>   Rodger,  Thanks for the input however, I believe the last address for

> the 2532 is FFFh. The 2532 is a 32k device arranged as 12bit address

> 8bit data or 4096x8=32k.  I'm a little rusty at this but I also think

> that 7FFh = 2048 and 4096 = FFFh.     With this said; I still think I

> have something wrong with my A11 signal or signal path.     If you can

> think of something else, please let me know.     Cameron

>

> Rodger Boots <rlboots at cedar-rapids.net> wrote:

>   Cameron Rector wrote:

>> Hello all,

>> I am new to this site, so I will applogize for dumb questions up front.

>>

>> I have a Bytek fireman 8x and I am having trouble programming

>> TMS2532A's. The programming part goes well until verify. It seams that

>> at address 0800h it fails. It does this on every chip I try. I don't

>> know if this could be a configuration setting or it the unit has a bad

>> solder joint or IC. I did a visual inspection from A11 pin 18 back

>> through the circuit traces and joints, however I didn't find anything

>> wrong. I tried to call Bytek and their phone is disconnected and my

>> email bounced back.

>>

>> So, does anyone here know anything about this machine? Does anyone know

>> where I can get the schmatic's for this programmer?

>>

>> I am a newbe at programming eproms, so don't overlook the fact I could

>> have a software setting wacked out.

>>

>> The first verify error says "ADDS 0800h Ram 01 Device 00"

>

>

> That's OK, the last address in a 2532 would be 07FF, so at 0800 you're

> no longer inside the 2532.

>

> You have the end of buffer set too high, otherwise it would have stopped

> at 07FF.

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>

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