] Are you sure that there's no way to enable the PAUSE key in R800 mode?
] Supposing hardware implementation, it's possible that there's a bit in a
] certain port that enables or disables the PAUSE key in R800 mode.
In R800 mode, the pause button is connected to a set/reset flipflop of which
you can read the status from an I/O port. When you hit the pause key once,
this flipflop is set. When you hit the pause key again, the flipflop is
reset. And so on. A program running on the R800 can look at the state of this
flipflop and react however the programmer likes. For example, in the
interrupt routine in the BIOS, the R800 checks this bit. If it is reset, the
R800 continues with the interrupt routine. If it is set, it will go in a loop
waiting until the bit is reset again.
Kind regards,
Alex Wulms
--
Alex Wulms/XelaSoft - MSX of anders NIX - Linux 4 ever
See my homepage for info on the *** XSA *** format
http://www.inter.nl.net/users/A.P.Wulms
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