] I was just wondering... If pause is pressed during disk access in Z80 mode,
] problems could arise. What happens?
] - disk I/O is always done in R800 mode (not true, as far as I know)
DOS2 always switches back to Z80 before calling any diskroutines. R800 is too
fast and can mess-up timing, for example the wait time after issue-ing a head
move command.
] - the pause key is disabled using some yet unknown mechanism
Nop. Pause key stays enabled.
] - pressing pause messes things up, but the disk I/O routine can recover
Nop. Pressing pause indeed messes things up, but the disk I/O routine can NOT
recover. So in the end you will get an error message like 'Disk I/O error'
under BASIC. Or 'Error reading disk, Abort, Retry or Ignore' under DOS.
] - something else?
See above.
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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