Sharp MZ-3500 User Manual
Page 70
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825 1
MZ3500
8 2 5 1
chip addresstOOOl/xxxxl
IN
OUT #1X
CLK
IN
DSR
IN
in R
OUT
CTS
1 N
ris
OUT
TXD
OUT
TXRDY N.C.
TXE
N.C.
TXC
IN
RXD
IN
RXRDY OUT
RXC
IN
SYN/BD
N.C.
2.45MHz clock
DATA SET READY
DATA TERMINAL READY
CLEAR TO SEND
REQUEST TO SEND
TRANSMITTER DATA
TRANSMITTER CLOCK
RECEIVE DATA
RECEIVER READY
RECEIVE CLOCK
READY
CS
PO (MPER SUT), ER
CD
RD
OUT 0 of 8253
SD
To
3
iil>CPU of Ni^
8253 OUT
8253
8253
chip address[0010/xxxx]
IN #
OUT # 2XH
CLKO
IN
GATED
IN
OUTO
OUT
CLKl
IN
GATEl
IN
OUTl
OUT
CLK2
IN
GATE 2
IN
OUT 2
OUT
2.45MHz
Vcc
To TXC, RXC of the 8251
2.45MHz
From OUT2
MUSIC
2.45MHz
Vcc
To GATE 1
INTO TO MAIN FROM SUB
INTO
POWER ON RESET
H
SOO S1W(lORQ-WR of SUB)
L
INTR=L(FROM MAIN)
H
I NT TO SUB FROM KEY
STK= ( L)
77 -