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Connector pinout: MSX External Diskdrive
MSX External Diskdrive
25 PIN D-SUB FEMALE at the Computer.
| pin | name | direction | description | color | | 1 | +12V | OUT | +12 VDC | | | 2 | +5V | OUT | +5 VDC | | | 3 | +5V | OUT | +5 VDC | | | 4 | /INDEX | IN | Sector hole passed sensor. | | | 5 | /DSEL1 | OUT | Drive Select 1 | | | 6 | DIR | OUT | Direction (0=In, 1=Dir) | | | 7 | /STEP | OUT | Moves head 1 step in DIR direction. | | | 8 | WRITEDATA | OUT | Write Data | | | 9 | /WRITEGATE | OUT | Write Gate | | | 10 | /TRACK00 | IN | Head is over Track 00 (outermost track) | | | 11 | /WRITEPROTECT | IN | Write protected disk (0=Write protected) | | | 12 | READDATA | IN | Data read from diskette. | | | 13 | /SIDESELECT | OUT | Side Select (0=Side 1, 1=Side 0) | | | 14 | +12V | OUT | +12 VDC | | | 15 | +12V | OUT | +12 VDC | | | 16 | +5V | OUT | +5 VDC | | | 17 | /DSEL1 | OUT | Select Drive 0 | | | 18 | /MOTOR | OUT | Motor On | | | 19 | READY | IN | Ready | | | 20 | GND | ------ | Ground | | | 21 | GND | ------ | Ground | | | 22 | GND | ------ | Ground | | | 23 | GND | ------ | Ground | | | 24 | GND | ------ | Ground | | | 25 | GND | ------ | Ground | |
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