[time-nuts] HP 3314A ROMs

paul swed paulswedb at gmail.com
Mon Apr 18 17:08:58 UTC 2011


It is 5  V only
My goal would be to put all of the eproms into 1 modern one.

On Mon, Apr 18, 2011 at 12:56 PM, Dave M <dgminala at mediacombb.net> wrote:

> In message <BANLkTi=fpfEuPw+vL8rsZz1R7bsA4NKcVA at mail.gmail.com>,
>> Joseph Gray wr ites:
>>
>>> No luck so far. I wired up an adapter and tried reading the Mostek
>>> part as a 2764. All I got was zeros. I read that sometimes this is
>>> due
>>> to not enough power to read the old parts, so I plugged a wall wart
>>> into my programmer for extra juice (it's USB powered normally). This
>>> didn't help. I guess I'll have to wait until I get a proper
>>> definition
>>> for the software to read this part.
>>>
>>
>> Check if the MK36* need more than a single +5V supply...  Old EPROMS
>> usually needed two or even three different supplies.
>>
>>
>> On Mon, Apr 18, 2011 at 2:32 AM, Poul-Henning Kamp
>> <phk at phk.freebsd.dk> wrote:
>>
>>> Check if the MK36* need more than a single +5V supply... ?Old EPROMS
>>> usually needed two or even three different supplies.
>>>
>>> --
>>> Poul-Henning Kamp ? ? ? | UNIX since Zilog Zeus 3.20
>>>
>>
>>
> The Motorola MCM68766 is listed as a direct pip-for-pin replacement for the
> Mostek device.  If your programmer can handle the Motorola part, you should
> be able to read the Mostek devices and write the data into a Motorola part.
> I bought a supply of the MCM68766 EPROMs a few years ago (Ebay), and still
> have a few.  Jameco used to stock them, but apparently, no longer.
> I checked Ebay just now... there are several vendors selling them.  One
> vendor is offerring ten in a package deal for $20 + S/H (Item #
> 350344738234).
>
> Cheers,
> David
> dgminala at mediacombb dot net
>
>
>
>
>
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