Tandy 6000 HD, Service Manual

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Service Manual
TANDY 6000/6000-HD
TAN D Y COMPUTER PRODUCTS ----------------------------------------------------------------------
Cable Assembly 6000878, FDC to Internal Drive
Wiring is pin to pin from one connector to the other.
Main PCB P3/J3 to Floppy Diskette Drive(s)
Pin Name Description
2 LOCURI* Reduced Write Current
4,6,8[
—
No Connection
10 TWOSIDI*
Two Sided Diskette Installed
12
DSKCHGI* Drive Door Opened Since Last Select
14
SDSELI* Side Select;low=side 0, high=side 1
16
-
No Connection
18 HLDI * Head Load
20
IPI Index Pulse
22
READYI Drive Ready
24
-
No Connection
26
DS0I*
Drive Select Zero (Internal)
28 DS1I*
Drive Select One (Internal)
30 DS2E* Drive Select Two (External)
32 DS3E*
Drive Select Three (External)
34 DIRI *
Step Direction
36 STEPl* Step Head One Track
38 WDI * Write Data
40
WGI * Write Gate
42
TRK0I* Track Zero Indication
44
WPRTI* Write Protected Diskette
46 RDI * Read Data
48,50
I -
No Connection
*Inverted or active low. Power Grounds on odd terminals.
Figure 5-8. FDC to Internal Drive Cable
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