erik malund wrote:
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That's not good, there is not, so say, the linearity, f.e. what's happend with delay if (r1,r0)=(0x00,0xFF) and then (r1,r0)=(0x01,0x00).

One of the most common traps in '51 assembler coding. just before the loop you must do
if Rlow !=0 then Rhigh+1

Erik,

So this doesn't reduce the code size!
And Peter has to write additional code to his famous example!

I have suspiction that 8051 development was first attempt to make RISC microcontroller. Not so bad, actually...

Regards,
George