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93 Appx. B
B.2 Parallel Port Connector(CN4)
B.3 Floppy Disk Drive Disk connector (CN3)
Table B.2: Parallel Port connector (CN4)
Pin Signal Pin signal
1STB 2AFD*
3D0 4ERR
5 D1 6 INIT*
7D2 8SLIN*
9D3 10GND
11 D4 12 GND
13 D5 14 GND
15 D6 16 GND
17 D7 18 GND
19 ACK* 20 GND
21 BUSY 22 GND
23 PE 24 GND
25 SLCT 26 GND
*low active
Table B.3: Floppy Disk Drive Connector (CN3)
Pin Signal Pin Signal
1 VCC 2 INDEX
3 VCC 4 DRIVE SELECTA
5 VCC 6 DISKE IE CHANGE
7VCC 8NC
9 NC 10 MOTOR A ON
11 NC 12 DIRECTION SELECT
13 NC 14 STEP
15 NC 16 WRITE DATA
17 GND 18 WRITE GATE
19 GND 20 TRACK 00
21 GND 22 WRITE PROTECT
23 GND 24 READ DATA
25 GND 26 HEAD SELECT