MSX External Diskdrive connector

#Computer#Storage Connectors#Obsolete Computers
25 pin D-SUB FEMALE connector pin-out & layout

25 pin D-SUB FEMALE connector  at the computer

PinNameDirDescription
1+12V-->+12 VDC
2+5V-->+5 VDC
3+5V-->+5 VDC
4/INDEX<--Sector hole passed sensor.
5/DSEL1-->Drive Select 1
6DIR-->Direction (0=In, 1=Dir)
7/STEP-->Moves head 1 step in DIR direction.
8WRITEDATA-->Write Data
9/WRITEGATE-->Write Gate
10/TRACK00<--Head is over Track 00 (outermost track)
11/WRITEPROTECT<--Write protected disk (0=Write protected)
12READDATA<--Data read from diskette.
13/SIDESELECT-->Side Select (0=Side 1, 1=Side 0)
14+12V-->+12 VDC
15+12V-->+12 VDC
16+5V-->+5 VDC
17/DSEL1-->Select Drive 0
18/MOTOR-->Motor On
19READY<--Ready
20GND---Ground
21GND---Ground
22GND---Ground
23GND---Ground
24GND---Ground
25GND---Ground
Note: Direction is Computer relative Diskdrive.

MSX Cassette connector

Panasonic CD-ROM connector