Sharp MZ-80P4 Instruction Manual page 43

• I/O circuit conHguration
(I)
DATAl - DATA8 (Input)
(2) DATA STB, DATA STB
+5V
+5V
560n.
560n
"
SN74LS244
220n SN75189
I
470PF
(3) IRT (Input)
(4) PRIME (Input)
470n
>-------w. . . . . . . -.----<lIO----~75189
12200PF
(5) BUSY, SELECT FAULT, ACK, PE, STATUS (Output)
+5V
~lKn
SN7406
40
.1"