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???
10/11/09 09:18
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 		 #169629 - EPROM programming
Responding to: ???'s previous message
Geoff Nicholls said:
I have several 8748's and 8749H's left over from projects I designed in the '80's. I also have an Intel 8052ah-BASIC chip that I never used. Having time on my hands these days, I thought I would make a programmer out of the 8052-BASIC chip, since it has PROG commands already.

Well, if (embedded) EPROM programming is the ultimate goal, my mod of B52 would be useless, as it has the PROG/FPROG commands modified to program/erase the internal FLASH, of course, as a true one-chip solution would be supposed to do.

But I personally wouldn't go for the original BASIC52 solution either. IMHO it is considerably less effort to wire up a '48 socket to a second generation '51 such as the 'RD2-s, pin to pin, without the latches and stuff. The programming algorithm is fairly simple to implement.

But I most probably wouldn't go for this solution either. I would try to locate a device programmer capable of programming the '48-s among my friends, and ask them to lend me it for a couple of days.

JW

List of 28 messages in thread
TopicAuthorDate
PCB for Elektor's 8052AH-BASIC project            01/01/70 00:00      
   Programming 8748-series MCU's is documented            01/01/70 00:00      
      You could probably do that on a PC that has a parallel port            01/01/70 00:00      
         Why, gentlemen ....            01/01/70 00:00      
            What would a newer MCU help?            01/01/70 00:00      
               help? maybe not, but save a lot of time            01/01/70 00:00      
                  It's what he said he wants            01/01/70 00:00      
                     Right here!            01/01/70 00:00      
                     why I want to program 8748's.....            01/01/70 00:00      
                        Electronics Today International            01/01/70 00:00      
                           Elektor PCB            01/01/70 00:00      
                              Those were the days...            01/01/70 00:00      
                           I recently pitched my old tapeup stuff ...            01/01/70 00:00      
                        EPROM programming            01/01/70 00:00      
                           8748 programming with the 8052AH-BASIC            01/01/70 00:00      
                              It's not a tough job.            01/01/70 00:00      
                              Well, since you ask            01/01/70 00:00      
                        Old chips            01/01/70 00:00      
                           Outdated? So what? The wheels still turn ...            01/01/70 00:00      
                              if you included EVERYTHING            01/01/70 00:00      
                                 Let him do what he wants!            01/01/70 00:00      
                                    mixing things up again            01/01/70 00:00      
                                       maybe not so much as you imagine            01/01/70 00:00      
                           Old Chips - Already Answered!            01/01/70 00:00      
   No need for the PCB            01/01/70 00:00      
      Good stuff            01/01/70 00:00      
   Elektor Website?            01/01/70 00:00      
   Intel 8052 AH Basic            01/01/70 00:00      

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