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Old 01 July 2014, 21:18   #17
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Join Date: Jun 2010
Location: PL
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Originally Posted by Ami_GFX View Post
Every one of them uses the serial port which limits multiport bandwidth considerably. Almost all the the Multiport expanders for the ST, Mac and PCs of that era use a faster port. The ST expansion units use the cartridge port except for the Export which C-Lab warned against using for timing critical applications that used a lot of bandwidth like doing a lot of mod wheel changes or multibyte sysex messages in a sequence. Note ons and offs which are 3 byte mesages would be fine. The same would hold for the Amiga MIDI interfaces. If you did something that was complicated and used a lot of data, the timing would break down. That is why you would want additional ports. The ideal midi setup for an Amiga would have a Zorro card with additional serial ports and multiple midi interfaces. That would deal with any hardware timing issues.
Ok, but we must compare apples to apples - for plain ST and Amiga with MIDI converter (i.e. simple electronics that turns RS232 levels to MIDI standard) there is similar limitations - difference between CPU clock is marginal so everything else is more important.
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