System information

Floppy Drive Interface
34 – Reference VSBC-6 Reference Manual
E
XTERNAL
S
PEAKER
A miniature 8 ohm speaker can be connected between J7 pin 5 (SPKO*) and J7 pin 6 (MKPWR).
P
USH
-B
UTTON
R
ESET
The Utility Connector J7 (see page 33) includes an input for a push-button reset switch. Shorting
J7 pin 1 to ground will cause the VSBC-6 to reboot.
Floppy Drive Interface
The VSBC-6 supports a standard 34-pin PC/AT style floppy disk interface at connector J18. Up
to two floppy drives can be attached to this port. CMOS Setup can be used to enable or disable
the floppy disk interface.
Warning! Cable length must be 18" or less to maintain proper signal integrity. The grounds
in this connector should not be used to carry motor current.
Table 11: Floppy Disk Interface Connector Pinout
J18
Pin
Signal
Name Function
1 Ground Ground
2 R/LC Load Head
3 Ground Ground
4 NC No Connection
5 Ground Ground
6 NC No Connection
7 Ground Ground
8 INDX* Be
g
innin
g
Of Track
9 Ground Ground
10 MTR1* Motor Enable 1
11 Ground Ground
12 DRV0* Drive Select 0
13 Ground Ground
14 DRE1* Drive Select 1
15 Ground Ground
16 MTR0* Motor Enable 0
17 Ground Ground
18 DIR Direction Select
19 Ground Ground
20 STEP* Motor Step
21 Ground Ground
22 WDAT* Write Data Strobe
23 Ground Ground
24 WGAT* Write Enable
25 Ground Ground
26 TRK0* Track 0 Indicator
27 Ground Ground
28 WPRT* Write Protect
29 Ground Ground
30 RDAT* Read Data
31 Ground Ground
32 HDSL Head Select
33 Ground Ground
34 DCHG Drive Door Open