Epson Parallel Interface C82303* - Manual (Page 12)

Table 3. Data latch timing selection
Jumper Function
J4
Falling edge of Rising edge of
B OFF STROBE ON STROBE
Note
Either J4A or J4B jumper must be connected.
DATA ENTRY
Factory Setting
ON
About data entry
OFF
To accommodate data entry, the C82303* interface board is
equipped with a buffer that temporarily stores data before I
transferring it to the printer. When this buffer becomes full,
any additional transmitted data cannot be accepted and is
discarded.
The buffered data is transferred transparently to the printer
main board every time the printer enters the READY state. A
maximum of 512K bytes of data can be buffered with this
board depending on its setting.
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