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???
12/02/09 09:14
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#171382 - can the ROM be read?
Responding to: ???'s previous message
Richard Erlacher said:
At the time these were popular, the parts numbered 80xx were ROM-based. The 8748/49 were cerdip's and EPROM-based, hence, field-programmable, and there might even have been some OTP's, though I never encountered them either.

The question is, whether the 802x's ROM can be read.

I've had success reading out several 8042-s (the original PC keyboard controller, a slightly tweaked version of 8048) using my favourite Elnec gear. They were of several manufacturers, but I don't remember whether there was a genuine Intel one among them. I've tried also to read out an Intel 8742 (this one *was* OTP), but no success - however it might had been fried before I tried to read it (been taken from a scrapped computer of unknown past).

Once the content is read out, the rest is best handled using Jeff Post's d48 disassembler (on these pages).

JW

List of 21 messages in thread
TopicAuthorDate
Anyone work with the 8048?            01/01/70 00:00      
   Info            01/01/70 00:00      
      I did not have to pay...            01/01/70 00:00      
   about those MCU's            01/01/70 00:00      
      can the ROM be read?            01/01/70 00:00      
         I have a schematic            01/01/70 00:00      
            Datasheet?            01/01/70 00:00      
               the "PROG" pin has other purpose            01/01/70 00:00      
                  production testing            01/01/70 00:00      
                     silly me            01/01/70 00:00      
                        Looks Good!            01/01/70 00:00      
            doesn't the datasheet make that clear enough?            01/01/70 00:00      
   I Have Data            01/01/70 00:00      
      I will email you            01/01/70 00:00      
         Host An FTP Transfer            01/01/70 00:00      
            He has to get the file to you            01/01/70 00:00      
               That's what the FTP site is for!            01/01/70 00:00      
                  Site Setup.            01/01/70 00:00      
                     Email Undeliverable            01/01/70 00:00      
                        uploaded            01/01/70 00:00      
   More old interesting intel stuff            01/01/70 00:00      

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