MIDI Interface Commodore C64 compatible with Datel, Passport, Sequential
This is simple DIY MIDI Interface for Commodore C64. It is compatible with Datel/JMS, Passport, Sequential and has MIDI IN, OUT and THRU
The MIDI standard is selected by jumpers. Jumper setting is printed on the board.
It is created based on information presented on following page https://www.neperos.com/article/pp6loj56370b9c3e
Optocoupler used in the design is H11L1. (4N35 wil typically not work due to speed limit)
I have used GAL16V8D instead of descrete logic to save some space and cost (they are still available for example on Aliexpress).
I have attached jdec file. You need to program the file to GAL (e.g. with XGecu T48).
Components
MC6850 U1
GAL16V8D U2
H11L1 U3
2MHz Oscillator Q1
100n C1,C2
1N4148 D1
220R R1,R2,R3,R4,R5
470R R6
MIDI DIN5 Conn. J3,J4,J5
2x7 Pin Conn. J2
Jumpers 5x
MIDI Interface Commodore C64 compatible with Datel, Passport, Sequential
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
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