Epson LQ-2550 Technical Manual page 263

Pin
Name
No.
11
52
46
o
13
o
14 PRO I
PROE o
62
2 B80 o
o
4 BANK
31
33,
64
Vss —
1, 32
23 THLD
21 ROUT o
DISC o
22
MLT
6
63 CPU
61 CAR 1
47 CAR2
Table A-8. EO5A1OAA Terminal Functions
Description
I Refresh cycle
Read strobe
I Write strobe
ROM (PROG.) select
External ROM select
Bank select
Bank select
I 8-bit parallel l/F data input flag
+5 VDC
Ground
I Power-on reset
RESET signal
Discharge
I Pulled down
I Power-on reset/lNIT reset
I Cartridge MOUNT/DISMOUNT
signal
Cartridge MOUNT/DISMOUNT
I
signal
A - 1 8
Notes
pin 20)