Tandy 1000 HX Technical Reference Manual page 250

• TANDY COMPUTER PRODUCTS
2 OF 5
P i n #
1
2
3
4
5
6
7
S
7
ID
11
12
13
14
15
16
17
18
1?
2D
21
22
23
24
25
26
27
28
2?
3D
31
32
33
34
35
36
37
38
37
4D
P i n Name
INT
SWITCH
A01
ADD
OUTO
OUT1
0UT2
0UT3
0UT7
0UT6
OUTS
0UT4
STROBEB
AFB
INITB
SEL
FAULTB
PE
BUSY
VSS
ACKB
FDCTC
FDCDACKB
DMATC
TC
SLCTINB
NC
RSTB
IORB
IOUB
CSB
D6
D4
D2
DD
Dl
D3
D5
D7
VDD
Type
output
i nput
i nput
i nput
i n p u t / o u t p u t
i n p u t / o u t p u t
i n p u t / o u t p u t
i n p u t / o u t p u t
i n p u t / o u t p u t
i n p u t / o u t p u t
i n p u t / o u t p u t
i n p u t / o u t p u t
output
output
output
output
i nput
i nput
i nput
ground
i nput
i nput
i nput
i nput
output
i nput
—
i nput
i nput
i nput
input
I n p u t / o u t p u t
I n p u t / o u t p u t
I n p u t / o u t p u t
I n p u t / o u t p u t
I n p u t / o u t p u t
I n p u t / o u t p u t
I n p u t / o u t p u t
I n p u t / o u t p u t
power
Descr i pt i on
Interrupt signal
S w i t c h for totem pole output
or open col lector o u t p u t an
INITB, AF, STROBEB.
CPU address 1 i ne
CPU a d d r e s s 1 i ne
Data I/O 1 i ne
Data I/O 1 i ne
Data I/O 1 i ne
Data I/O 1 i ne
Data I/O 1 i ne
Data I/O 1 i ne
Data I/O line
Data I/O 1 i ne
P r i n t e r S t r o b e s i g n a l
P r i n t e r A u t o f e e d s i g n a l
P r i n t e r I n i t i a l i z e s i g n a l
P r i n t e r S e l e c t s i g n a l
Pr i nter F a u 1 t s i gna1
P r i n t e r P a p e r e m p t y s i g n a l
Printer Busy signal
Ground
Printer A c k n o w l e d g e signal
FDC Terminal Count
F D C - D M A A c k n o w l e d g e signal
DMA Terminal Count
FDC Terminal Count signal
Printer S e l e c t input
Not used
System Reset
CPU I/O Read s t r o b e
CPU I/O Ur ite s t r o b e
C h i p s e l e c t s i g n a l
CPU Data I/O
CPU Data I/O
CPU Data I/O
CPU Data I/O
CPU Data I/O
CPU Data I/O
CPU Data I/O
CPU Data I/O
+5 Volt Power Supply
1.2 DESCRIPTION OF EACH PINS: