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FUNCTIONAL DESCRIPTION
Figure 5-3 and the following text will explain the meaning of data bits DO through D7 for Write Ports 1
and 2.
WRITE PORTS (1 and 2)
DATA EN
ACCESS LED
FAULT LED
DANE SELECT
SELECT
SELECT
SELECT
Flexible disc
Flexible disc
| Flexible disc
FLEX DISC DRIVE
|FLEX DISC DRIVE
WP?
lariva Motor on[
"ive Head
| drive Head
FLEX m ae
DIRECTION SELECT] CHANGE RESET]
NOT USED | NOT USED
Select
Load
Hex
address
for Write
Ports
Write
Port 0 (WPO)
2080-20FF
Write
Port
1 (WP1)
2400-247F,
2500-257F,
2600-267F,
2700-277F
Write
Port
2 (WP2)
2800-2BFF
Figure 5-3.
Write Port definitions.
WP1 (Write Port 1)
DS
Fault LED - A zero on this bit illuminates the FAULT LED.
WP2
(Write Port 2)
$7
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