[sdiy] how you got started with your current µC?

Timothy Daugard daugard at cox.net
Mon Sep 21 19:39:53 CEST 2015


On 9/20/2015 9:22 PM, nvawter wrote:
> On 2015-09-20 16:54, Tim Ressel wrote:
>> My first proc was a COSMAC 1802, on a breadboard, with manual entry
>> switches, powered off a car battery, in a horse barn. (beat that!)
>
> https://en.wikipedia.org/wiki/RCA_1802#Code_samples
>
> It appears that a valid opcode on that chip is "SEX" (tee hee hee!)
>

IIRC Set the X register to the following byte (for indirect addressing). 
Easy enough to look up in the file two feet away if I cared.

Tim Daugard






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