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Old 11th Nov 2020, 6:13 pm   #107
Slothie
Octode
 
Join Date: Apr 2018
Location: Newbury, Berkshire, UK.
Posts: 1,287
Default Re: I found it! A very sorry looking MK14.

Quote:
Originally Posted by Buzby123 View Post
Quote:
Originally Posted by SiriusHardware View Post
... how unlucky are you to have at least one duff IC in both sets of PROMs? ...
Yes, that's the story of my life. The only luck I have is bad !.

I started to rig-up a ROM dumper, but then remembered that the MK14 rewires both busses, so I wasn't sure if I was going to get the same values back as expected. I am however going to test the RAMS, at least I know I should get out what I put in.

On order is a new set of TTL parts, so no doubt then about their provenence.

Cheers,

Buzby
The MK14 only plays fast and loose with the address lines on the RAM. The ROM address and data lines are wired as specified on the chip.
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