External Speaker; Push-Button Reset; Floppy Drive Interface - VersaLogic VSBC-8 Reference Manual

E S
XTERNAL PEAKER
A miniature 8 ohm speaker can be connected between J13 pin 5 (SPKO*) and J13 pin 6
(MKPWR).
P -B
USH UTTON
The Utility Connector J13 (see page 26) includes an input for a push-button reset switch.
Shorting J13 pin 1 to ground will cause the VSBC-8 to reboot.

Floppy Drive Interface

The VSBC-8 supports a standard 34-pin PC/AT style floppy disk interface at connector J17. 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.
VSBC-8 Reference Manual
R
ESET
Table 10: Floppy Disk Interface Connector Pinout
J17 Signal
Pin Name
1 Ground
2 R/LC
3 Ground
4 NC
5 Ground
6 NC
7 Ground
8 INDX*
9 Ground
10 MTR1*
11 Ground
12 DRV0*
13 Ground
14 DRE1*
15 Ground
16 MTR0*
17 Ground
18 DIR
19 Ground
20 STEP*
21 Ground
22 WDAT*
23 Ground
24 WGAT*
25 Ground
26 TRK0*
27 Ground
28 WPRT*
29 Ground
30 RDAT*
31 Ground
32 HDSL
33 Ground
34 DCHG
Function
Ground
Load Head
Ground
No Connection
Ground
No Connection
Ground
Beginning Of Track
Ground
Motor Enable 1
Ground
Drive Select 0
Ground
Drive Select 1
Ground
Motor Enable 0
Ground
Direction Select
Ground
Motor Step
Ground
Write Data Strobe
Ground
Write Enable
Ground
Track 0 Indicator
Ground
Write Protect
Ground
Read Data
Ground
Head Select
Ground
Drive Door Open
Floppy Drive Interface
Reference – 27