Tandy 1000 HX - DESCRIPTION OF EACH PIN FUNCTION

• TANDY COMPUTER PRODUCTS •
DESCRIPTION OF EACH PIN FUNCTION
FUNCTION
vss
RFSHB
REFRESHB
MCF1
MCFO
WRB
FDCDMACKB
DACK1B
DACK3B
DMATC
FDCDMARQB
DRQ1B
DRQ3B
DBDIR
DBEN
MEGAPIN
OSC
VSS2
BREQB
RESET
AENA
BRDY
MEMWB
MEMRB
IOWB
I ORB
D7
D6
D5
D4
D3
D2
Dl
DO
PIN NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
FUNCTION
VDD
CASB
RASOB
RAS1B
RAS2B
MAO
MAI
MA2
MA3
MA4
MA5
MA6
MA7
MA8
A19
A18
A17
A16
A15
A14
A13
A12
All
A10
A9
A8
A7
A6
A5
A4
A3
A2
Al
A0
PIN NUMBER
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68