testbios and the system timer

[ron minnich]

On Thu, 3 Jun 2004, Richard Smith wrote:

> Yes. I think it would.  Got any ideas on the implementation?   I'm ready 
> to try an implement this.

in the main loop for instruction decode there is a single instruction 
dispatch function. Create a global counter (emulate_counter?) and 
increment it once each time the dispatch function returns. 

You can in the emulator redirect I/O port access to a function. Write the 
code to handle read/write on those ports and use the emulate_counter to 
drive the clock value.

ron