Epson LQ 1050 - B/W Dot-matrix Printer - Page 190

REV.-A
Table A-3. KPD781 O Mode Setting
Mode 1
Mode O
External memory
o
0
4K bytes, Addresses O to OFFF
o
1 (Note)
16K bytes Addresses O to 3FFF
1 (Note)
1 (Note)
64K bytes Addresses O to OFFF
NOTE: Pull-up is made.
Table A-4.
pPD781 1 PF Operation
PF7
PF6 PF5 PF4 PF3
PF2
PF1 PFO
External Memory
Port Port
Port
Port
Port Port
Port
Port
256 bytes (max.)
Port
Port
Port
AB 11
AB 10 AB9
AB8
4K bytes
Port
Port AB 13
AB 12
AB 11 AB 10
AB9
AB8
16K bytes (max.)
AB 15 AB 14 AB 13 AB 12 AB 11 AB 10
AB9
AB8 60K bytes (max.)
Table A-5. pPD781 O PF Operation
f
a
. . . . .
MODE 1 MODE O PF7
PF6 PF5 PF4
PF3 PF2
PF1 PFO
External Memory
o 0 Port Port Port Port
AB 11 AB 10 AB9 AB8 4K bytes max.)
o 1 Port Port AB 13 AB12 AB 11
AB 10 AB9 AB8 16K bytes (max.)
1
1
AB 15 AB 14 AB 13 AB 12
AB 11 AB 10 A09 AB8 64K bytes (max.)
A-4