Tandy 1000 HX Technical Reference Manual page 162

• TANDY COMPUTER PRODUCTS
1.2 DESCRIPTION OF EACH PINS:
Pin# Pin Name Type
Descr i pt i on
1
2
3
4
5
6
7
B
7
ID
11
12
13
14
15
16
17
18
1?
20
21
22
23
24
25
26
27
28
27
3D
31
32
33
34
35
36
37
38
37
40
KBDCLK
KBDDATA
KBDBUSYB
KBD1NT
RSIZO
RSIZ1
DO
Dl
D2
D3
D4
D5
D6
D7
PIOCSB
BADD
BA01
BIORB
BIOUB
VSS
DORCLK
KBDRSTB
BYSRSTB
PC4
TMR0UT2
BNDCNTL1
SNDCNTLD
SNDCNTL2
FDCTC
MTRON
DMA/ I
FDCRSTB
DS1
DSO
PPITIM
TCH2G
FAST
MULTIDAT
MULTICLK
VDD
i nput
i nput
output
output
i nput
i nput
i nput/output
i nput/output
i nput/output
i nput/output
i nput/output
i nput/output
i nput/output
i nput/output
i nput
i nput
i nput
i nput
i nput
ground
i nput
output
i nput
i nput
i nput
output
output
output
output
output
output
output
output
output
output
output
i nput
output
output
power
Keyboard clock
Keyboard data
K e y b o a r d b u s y s i g n a l
Keyboard interrupt signal
Monachrame/co1 or monitor made
Reserved
Data I/O 1 i ne
Data I/O ! 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
Ch i p se1ect strobe
CPU address 1 i ne
CPU address 1 i ne
CPU I/O read strobe
CPU I/O write strobe
Ground
Decode latch clock
Keyboard reset signal
System reset s i gna1
Video memory size mode
Timer counter from 8253 out2
Sound contro 1 1
Sound contro 1 0
Sound control 2
FDC terminal count
Motor ON signal to disk drive
DMA Request & FDC Interrupt
enab1e
FDC reset si gna1
Dr i v e s e 1 e c t 1 s i g n a 1
D r i v e s e l e c t 0 s i g n a l
T i mer v
1
i deo s i gna1
Timer channel 2 gate
4.77Mhz or 7.16Mhz mode
se1ect
Mu1t i-data
Mu1t i-c1ock
+5 Vo1t Power Supp1y
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