Epson PX-8 - Page 323

REV.-A
",- SED1320
1. Location: MAPLE Board, 7C
2. Pin
Assignments
e
Table 7-15 SED1120 Pin Assignments
Pin No.
Signal Name
In/Out
Function
1
RS In System reset signal:
provided from GAH40D;
initializes internal
registers.
--
2
SINT Out
System interrupt request: causes an inter-
rupt
to slave CPU 6303 via GAH40S.
--
SINT becomes low when command is
set in
PDIR register by main CPU.
--
SINT becomes high when the slave
CPU reads CSR register.
--
3 SCS In
System chip select and V-RAM select signal
--
4 SCS1
In
System chip select: Register select signal in
SED1320.
5 SE In System enable: Pulse at 1.63 /-lsec interval
6 SAS In System address strobe: Latches
low-order
address at power
fall.
-
7
R/W
In
System
read/write signal
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