Frank2.Simon@arbi.informatik.uni-oldenburg.de (Frank 'Biber' Simon) (04/24/91)
Who can help me ?? I have a MIDI-Keyboard and a PC/XT. I want to connect the Keyboard with my Computer and so I need a MIDI-Interface. Because being very expensive and needing only for bankloading (only get serial datas of Keyboard and put serial datas to Keyboard) I want to make my interface in my way. There are many Interface-Chips (for example the 6402), who would do the job even with the high MIDI-Transfer-speed of 32kBaud. It could be connected to the parallel-printer-port and would transfer a parallel 8-Bit coming of computer in serial way to the keyboard, adding auto- matically Start- and Stopbits. The same way in other direction (all this with one cheaply Chip !) Who has made some experience with such selfmade MIDI-Interface ?? Who can help me in making such thing or (if there is no other way) who can give me some adresses having a very cheap MIDI-Interface ?? Maybe it is able to buy a normal RS232-Interface with special speed (because the "normal" RS232-speed ends at 19200 Baud), so it could do my job ?? I hope for positive informations..... ------------------------------------- E-Mail-Address: Frank2.Simon@arbi.informatik.uni-oldenburg.de *--------------------------------------------* * I am because somebody dreams me ! * *--------------------------------------------* ----------------------------------------------------------------------
frank@cavebbs.gen.nz (Frank van der Hulst) (04/27/91)
In article <biber.672496842@faramir> Frank2.Simon@arbi.informatik.uni-oldenburg.de (Frank 'Biber' Simon) writes: >Who has made some experience with such selfmade MIDI-Interface ?? I have done that -- I used a standard serial card as a basis, changed the crystal to a 2MHz (instead of 1.8...MHz), and replaced the RS-232 driver & receiver section with a current loop receiver driver, including an opto-isolator ... a friend told me he took a standard serial card, changed the crystal, cut a few tracks, added a few links, and put the opto into the RS-232 driver socket. The next problem, is to get/write software which works with this set-up. -- Take a walk on the wild side, and I don't mean the Milford Track. Kayaking: The art of appearing to want to go where your boat is taking you.