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Port Disk Drive


Port Disk Drive służy do podłączenia zewnętrznych stacji dysków.

Pin	Nazwa	I/O	Opis
1	/RDY	I/O	Disk Ready
2	/DKRD	I	Disk Read Data
3	GND	-	Ground
4	GND	-	Ground
5	GND	-	Ground
6	GND	-	Ground
7	GND	-	Ground
8	/MTRXD	OC	Disk Motor Control
9	/SEL	OC	Select Drive 2
10	/DRES	OC	Disk Reset
11	/CHNG	I/O	Disk Removed Drive - Latched Low
12	+5V	-	+5V DC (250 mA maximum)
13	/SIDE	O	Select Disk Side (0=upper, 1=lower)
14	/WPRO	I/O	Disk Is Write Protected
15	/TK0	I/O	Drive Head Position Over Track 0
16	/DKWE	OC	Disk Write Enable
17	/DKWD	OC	Disk Write Data
18	/STEP	OC	Step The Head
19	DIR	OC	Select Head Direction (0=inner, 1=outer)
20	/SEL3	OC	Select Drive 3
21	/SEL1	OC	Select Drive 1
22	/INDEX	I/O	Disk Index Pulse
23	+12V	-	+12 Volts DC (160 mA maximum)

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