Epson PX-8 - 3.8.6 CONFIG

6
3
0
3
G
A
H
4
0
S
S
E
D
1
3
2
0
I
GAH
40S
Address
OOOD
OOOE
OOOF
0010
0011
0012
0013
0014
0020
0021
0022
0023
0024
0025
0026
0027
0028
Read/
Function
Write
Input Capture register (up-
per 8 bits)
Input Capture register
(lower 8 bits)
Control/status register
Baudrate/Mode Control
register
TX and
RX control/status
register
Receive data register
Transmit data register
RAM control register
Counter (upper byte)
R
input
Counter reset
W
Counter (lower byte)
R
Command register
W
P-ROM address (upper 8
byte)
W
P-ROM address (lower 8
W
byte)
P-ROM read data R
Controller instruction re-
W
gister
Controller data buffer R
Controller data buffer
W
Controller status register
R
Port data output register
(data)
W
Port data input register R
Port data output register
W
(command)
Interrupt enable register
W
REV.-A
Bit
7
6
5 4 3 2 1
0
Bit15
Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8
Bit 7
Bit 6
Bit5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
FLAG
IRQ
OSS
LATCH
enable
-
enable
- -
-
Clock control Baudrate control
-
-
- -
RDRF ORFE TDRE RIE RE TIE TE WU
MSB LSB
MSB
LSB
~tand-b'r
RAM
power enable
- - - - -
-
CNTR
Microcassette tape drive counter data
Count
-
-
Bit 1 2 I Bit 11
Bit 10 Bit 9 Bit 8
i
-
-
- - -
- -
-
Microcassette tape counter data
Bit 7 Bit 6
Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 BitO
STOP
--
SW
FAST
-
MTC MTB MTA
SWPR
CNT
MCT
Upper P-ROM address bits
Bit 15 I Bit 14 I Bit 13 I Bit 121 Bit 11 I Bit 10 I
Bit 9
I
Bit 8
Upper P-ROM address bits
Bit 7
Bit 6
Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 BitO
MSB
LSB
SED 1320
•
6303
2-46