5-6

Data Available (*)
X Flag
Ack Data Req
Printer Busy
Host Busy
(from CPU)
Printer Clock
Data bit 4
Data bit 5
Data bit 6
Data bit 7
Data bit 0
Data bit 1
Data bit 2
Data bit 3
1284 Active
(from CPU)
* Data Available is assigned for the cable.
Figure 5.4b Data transmission timing (nibble mode)