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September 28, 2023, 09:42:11 21:42


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Author Topic: Dallas Semi DS89C4x 8051 chips and Keil C51  (Read 786 times)
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cthulhiac
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« on: April 23, 2023, 09:07:12 21:07 »

Hi all,

I have a generic 8051 development board with the Dallas Semi DS89C430 8051 chip. It comes preloaded with the Dallas Semi loader 2.1. I plan on replacing it with the Keil MON390 which allows for direct debugging from the Keil IDE.

My question is:

If I replace the Dallas Semi monitor with the Keil MON390, can I go back if I change my mind?

I am pretty sure I can use the DS monitor to overwrite itself with MON390. Will MON390 let me do the same and replace it back with the DS monitor?

Thanks!
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pickit2
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« Reply #1 on: April 24, 2023, 02:26:25 14:26 »

do you only have one chip, to work on a project?
if I remeber right the data sheet for the chip as full details of the programer. so you can build one from listed parts.
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cthulhiac
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« Reply #2 on: April 24, 2023, 03:15:14 15:15 »

Thank you for the suggestion. I hadn't thought (doh!) of looking for any relevant application notes so when I did, I found this:

https://www.analog.com/media/en/technical-documentation/app-notes/using-the-keil-microvision-debugger-with-the-ds89c4x0.pdf

Cheers!
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