[Techtoolslist] Bytek Fireman 8x

[Cameron Rector]

John,
  Thank you, this gives me all kinds of ideas. I will check this tomorrow with the logic probe. I am thinking if the programmer doesn't pull this pin up then maybe I could program the lower half of the eprom first and then manually pull A11 up and set my starting address to 800h and program the top half. 
   
  I will check it out first and see what I have.
  Thanks,
  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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