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Cinema_List
Re: Software Game Select


From: Cinematronics Hacker List ( )
Date: Tue Jun 13 1995 - 10:10:14 CDT


Hey,

  I was being stupid before. I over complicated loading the L2 latch with
the game number. If the program simply reads from data from location
$800 + 2*Game. The high order bit is select and the low bits are the game
number.
  The problem is that there's no way to add a memory mapped device to the
Cinematronics processor, so it needs to be done by monitoring the bus for
certain behavior. Another problem is that there is no way to put data
on the data bus because it's only connected to ROMs which are read only.
I forgot that you can use an accumulator as an address to read data from
the roms in my earier message.

Somebody say something...Anything... :-)

--
 ___   __   _   _  _
|   \ /  \ | | | || |             Engineer/Programmer
|  _/| || || |_| || |__     " What makes someone care so much?
|_|  |_||_| \___/ |____)      for things another man can just ignore. " -S.H.


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