Epson LQ-1050 Technical Manual page 71

The 8-bit parallel interface circuit
External data on DIN 1-8 is input at the falling edge of the STROBE
Control signals EBSY, WR, RD, and ACKI are input from the
through DOU8, or a BUSY signal. Figure 2-29 shows the sequence for these signals and Figure 2-30
shows the interface timing.
Table 2-12 lists the control signals between the printer and the host computer.
EXTERNAL
BUSY
AC KNLG
ERROR
SLCT IN
/
J 10
is shown
in Figure 2-28.
I
signal and a data exchange is
the external device.
m
the 'c to
CPU and cause the IC to output either DOU 1
2-29
REV.-A