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Commodore Plus 4 - Page 440

Commodore Plus 4
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428
Appendix
C
Memory
Location(S)
Hexadecimal
Decimal
Usage
$0010
$0011
$0012
$0013
$0014-$0015
$0016
$0017-$0018
$0019-$0021
$0022-$0025
$0026-$002A
$002B-$002C
$002D-$002E
$002F-$0030
$0031-$0032
$0033-$0034
$0035-$0036
$0037-$0038
$0039-$003A
$003B-$003C
$003D-$003E
$003F-$0040
$0041-$0042
$0043-$0044
$0045-$0046
$0047-$0048
$0049-$004A
$004B-$0060
$0061
$0062-$0065
$0066
$0067
$0068
$0069
$006A-$006D
$006E
16
17
18
19
20-21
22
23-24
25-33
34-37
38-42
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
69-70
71-72
73-74
75-96
97
98-101
102
103
104
105
106-109
110
Flag
for
subscript/
FNx
function
Flag
for
input
($00=INPUT,
$40=GET,
$98=READ)
Sign
of
TAN/comparison
flag
Flag
for
I/O
prompt
Integer
value
Pointer
to
temporary
string
stack
Address
of
last
temporary
string
Stack
for
temporary
strings
Utility
pointers
Floating
point
result
of
multiply
Pointer
to
start
of
BASIC
text
Pointer
to
start
of
variables
in
BASIC
RAM
Pointer
to
start
of
arrays
in
BASIC
RAM
Pointer
to
end
of
arrays
in
BASIC
RAM
(+D
Pointer
to
bottom
of
strings
in
BASIC
RAM
Pointer
to
current
string
Pointer
to
top
of
BASIC
RAM
(+1)
Current
BASIC
line
number
Pointer
to
current
BASIC
text
Pointer
to
BASIC
stack
for
CONT
Current
line
number
in
DATA
Current
address
of
DATA
item
Vector
to
INPUT
Name
of
current
variable
Address
of
current
variable
Pointer
to
FOR/
NEXT
index
Temporary
storage
area
Floating
point
accumulator
1,
exponent
Floating
point
accumulator
1,
mantissa
Floating
point
accumulator
1,
sign
Series
evaluation
constant
pointer
Floating
point
accumulator
1,
overflow
Floating
point
accumulator
2,
exponent
Floating
point
accumulator
2,
mantissa
Floating
point
accumulator
2,
sign

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