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Re: CB030, A 68030 SBC for hobbyists [message #7182 is a reply to message #7180] Thu, 05 March 2020 20:35 Go to previous messageGo to previous message
plasmo is currently offline  plasmo
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mikemac wrote on Thu, 05 March 2020 18:59
Anyone ever use an Arduino or some such as an in circuit emulator of a 39F040 ROM? I've gotten spoiled by being able to update the firmware on one of my projects via JTAG. This physically prying the ROM out of the board, flashing (and verifying!Wink it, and carefully putting it back it over and over is so 1980's! Very Happy I'll probably dust off the M68K emulator for some of the initial boot loader work.
Mike,
AT49F040 can be programmed in-situ, so it should be possible to load the new ROM firmware in RAM to check it out and once the new ROM firmware is working correctly, it can be programmed into AT49F040 without removing it. I'm sure the same thing can be done with 39F040 as well.

I've done the in-situ programming of flash on the repurposed Soneplex MPU board, so let me see if I can port that code to CB030 in the next few days.
Bill

 
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