Oki OKIPAGE24DX Maintenance Manual page 169

d) INPUT PRIME timing (when set to the effective INPUT PRIME signal)
Nibble Mode
Conforms to IEEE 1284 spec.
ECP Mode
Conforms to IEEE 1284 spec.
40930701TH DRAFT Vesion
INPUT. PRIME
BUSY
SELECT
5 s max.
ACKNOWLEDGE
50 s min.
10 s max.
0.5 s to 10 ms
0 min.
188 /