Let's just stop the discussion about the 'fantastic
features' of this chip, because it may be fast but it
is totally incompatible with MSX and therefor can not
be used. For the same reason, the Z382 (although
running at a 2 MHz faster than the Z380) can not be
used either. Because it uses some of the I/O for its
internal functions. Very strange of the Z382, by the
way, since there also is an internal I/O range (why
not decrease the number of ports so that they can fit
in there). Anyways, that, also, is a useless
discussion.
The IM mode 2 is used very often on MSX (though not
supported by any hardware). A lot of programs running
in the Basic memory-layout (with BIOS on page 0), but
still wanting to have their own interrupt routines use
IM 2 to achieve that.
The problem with I/O registers is also unsolvable,
remapping or any other trick won't work because the
problem is INSIDE the processor. The only solution is
to debug the programs not working, and there are just
too much. It is an impossible thing to do, and even if
it were possible, it isn't worth the effort just to
gain some extra instructions per second.
So there is NO WAY this chip is a possible candidate.
~Grauw
__________________________________________________
Do You Yahoo!?
Send online invitations with Yahoo! Invites.
http://invites.yahoo.com
****
MSX Mailinglist. To unsubscribe, send an email to [EMAIL PROTECTED]
and put "unsubscribe msx [EMAIL PROTECTED]" (without the quotes) in
the body (not the subject) of the message.
Problems? contact [EMAIL PROTECTED]
More information on MSX can be found in the following places:
The MSX faq: http://www.faq.msxnet.org/
The MSX newsgroup: comp.sys.msx
The MSX IRC channel: #MSX on Undernet
****
