🚀 go-pugleaf

wlsmith@valve.heart.rri.uwo.ca (Wayne Smith) writes:

>In article <1992Oct31.002835.28029@ccu1.aukuni.ac.nz> stuartw@ccu1.aukuni.ac.nz (Stuart Woolford) writes:
>>>After looking at the abbreviated MIDI1.0 specification, it seems 
>>>that a MIDI<->RS232 interface, which would normally sell for around
>>>$100 would consist of nothing but the MIDI driver and and RS232 
>>>driver connected back to back. 
>>
>>not quite, it is good to bew Roland MPU401 compatable, which involves some
>>intelegence on the controllers side.... B-(
>>
>>I have built a small modification for an IBM serial card, which converts it
>>to MIDI, the hardest part is that you have to replace the crystal on the card
>>so that you can get a close enough baud rate, it costs about $10 NZ ($5US)..
>>
>>unfortunatly... it is nearly useless unless you write you're own software, as
>>it is not even close to MPU401 compat....

>What exactly does the MPU401 have?  A buffer? micro-controller?
>Is it memory or I/O mapped?  Does it do DMA?

not sure, I think it does buffering and command filtering .... but not sure..

>What about the Sound Blaster?  I think that with the proper
>wiring kludge its game port can function as a midi port.  Is
>this true?

I believe that it can do MIDI, but is not MPU401 compatable, so it would
pay to check if the software available can use the SB, as some can.. IT does
not seem to be any better that my serial-hack in capability...