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Help programming BiPolar PROMs

Discussion in 'Electronics & Electrics' started by dc99, Nov 15, 2017.

  1. dc99

    dc99 Member

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    May 4, 2016
    Messages:
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    Hi all,

    I need some help with programming Bipolar PROM's

    The technology is well any truly obsolete so finding a modern device that can program these without paying a small fortune is impossible.

    The older Data I/O 29b universal programmer appears to be what most are using to doing these. If anyone has one or a similar device that is able to program 18pin 1024x4 (4096bit) and 20 pin 256x8 (2048bit) your assistance would be greatly appreciated.

    I found a couple of OS services but someone local would be more practical.

    Cheers!
     
  2. merlin13

    merlin13 Member

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    back in BrizVegas
    Bit late for me to directly assist - I offloaded a couple of these back in the late 90's when I purged all my old hardware for my migration up here to Bananaland. :) Haven't seen any since up here either...

    You might be forced to go find a suitable PROM programmer box "somewhere" in the world (eBay etc)to buy 'n keep for your very own, perhaps... be aware they were also usually serial interfaced so that'd be another landmine to tapdance around nowadays.
     
  3. brokenback

    brokenback Member

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    Have any Chip numbers? So I can cross check on my device support list
     
  4. OP
    OP
    dc99

    dc99 Member

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    merlin13 - I've been looking to purchase a more capable programmer for awhile ... unfortunately very few support bipolar proms. I've kept some old computers on the off chance I do find something.

    brokdenback - here is a couple of the main chips numbers... not sure if they are all still available but see how you go.
    18pin 1024x4 - NEC upb426 / Fujitsu MB7122 / Signetics 82S137 / TI tbp24s41 / AMD 27s33 / NATIONAL 74S573
    20 pin 256x8 - NEC upb421 / Fujitsu MB7118 / Signetics 82S135 / TI tbp28L22/ AMD 27s23 / NATIONAL 74S471

    cheers!
     
  5. brokenback

    brokenback Member

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    Sorry not on my programmers support list. Kinda knew the 74S*** ICs would be asked!
     
  6. OP
    OP
    dc99

    dc99 Member

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    Thank you for checking.
     
  7. Rmack

    Rmack Member

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    I have a TopMax II. Not a cheap programmer, but is capable of burning a few of those chips. Device list HERE
     
  8. OP
    OP
    dc99

    dc99 Member

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    Thanks for that. it now seems sourcing the proms themselves it not cheap either...

    I'm checking a couple of places that can supply the part as well as programming it.

    Cheers
     
  9. breech

    breech Member

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    Last edited: Dec 9, 2017
  10. OP
    OP
    dc99

    dc99 Member

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    Thanks for the link. I'd like to keep this project looking original but I'll keep that in mind for other repairs.
     

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