[time-nuts] Simulation

Magnus Danielson magnus at rubidium.dyndns.org
Sat Aug 14 16:37:54 UTC 2010

On 08/14/2010 06:15 PM, J. Forster wrote:
> DEC code was a nightmare. Any DG Nova line code would run on any machine.

This is how we have learned what is a bad idea... and it is now 
documented in the guidelines.

Use of the top 8 bits in pointers caused headaches for the 68k machines 
when they needed more than 16 MB of addressing. Amongst other things.

The undocumented features of the 6502 is now being maintained in 
modernized versions... maybe a better choice in design could be made.


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