Instruction manual

SLOW DIS
(K)*=0200
/J8
0200 A9,LDA #4B
02P2 20 JSR E97A
0205 A9 LDA #2A
0207 20 JSR
E97A
020A 20 JSR EAAE
020D BO BCS 0200
020F
20 JSR E5D7
0212 20 JSR EBJ7
0215 20 JSR E785
0218 20 JSR
EA24
021B 20 JSR F46c
021E AD LDA A425
0;;21 )8 SEC
0222 65 ADC EA
0224 8D STA A425
0227 90
BCC 022C
0229
EE INC A426
022C
20 JSR EA24
022F 20 JSR E907
02J2 20 JSR E790
02J5 FO EEQ 02JD
02J7 20 JSR 0240
02JA
4C JMP 021B
02JD 48 JMP E1Al
0240
A9 LDA #10
0242 85 STA AC
0244 A9 LDA #00
0246 8D STA AOOE
0249 A9 LDA #FF
024B
8D STA A008
024E
8D STA A009
0251
A9 LDA #20.
025J 2C BIT AOOD
0256 FO BEQ 025J
0258 AD LDA A008
025B
C6 DEC AC
0250 DO BNE 0249
025F 60
RTS
ZERO PAGE LOCATIONS USED:
OOAC Timing Loops
OOEA Length (Used by monitor
ROM)
The second difficulty is an an-
noyance with the speed at which
disassembly occurs when the printer is
not in operation. This mode of Qperation
19:38
is sometimes desirable to conserve
paper while debugging
or while checking
f.QLjlDLrUc..Yla.r part of a program. The
program left,
SLOW DIS, Introduces
aoout a
T second delay between steps
during disassembly
wlthouUhe printer.
Location 0241 can be modified to
change the speed
as desired. Execute
the program in the normal way using
(*)
= 0200, RETURN, "G", RETURN. The
display will indicate "K* = ". Enter the
starting address
of the material to be
disassembled and the number of steps
as in -normal operation. If an indefinite
number
of steps was selected by
"SPACE", then the program must be ter-
minated .bY ..ESC.
One of the major advantages of the
AIM-65 over the KIM-1 and other similar
systems using 7-segment read-out
displays (limited to six digits), is the
relative ease
of using meaningfully
prompted programs which eliminate the
need to record or remember the proper
addresses into which data must
be
entered to initiate the program. With
prompting, the required information
can
be asked for, Inserted, and stored in ap-
propriate locations under program con-
trol. Two utility programs,
CLEAR and
MOVER, included below, are of the
prompted type.
MOVER is a data
transfer program capable of moving any
amount
of data either forward or
backward to a designated starting
ad-
dress. Execution of the progam results
in a prompting message of "OLD
FROM =" to elicit the entry of the star-
ting address of the data to
be moved.
After the address has
been entered and
RETURN activated, "TO = " calls for the
ending address
of the data to be moved.
When RETURN is again used, theprompt
"NEW
FROM =" appears to bring about
entry of the starting address at which
the moved data is to start. This time
RETURN causes exe'cutlon of the move
process, completion
of which is in-
dicated
by a cleared display except for
the normal " " at the left side of the
display. Similarly,
CLEAR uses promp-
ting messages, "CLR
FROM =" and
"TO
="to obtain the limiting addresses
of the area into which zeros or any other
designated character may
be entered.
The area can
be of any size.
A general breakdown
of the
features of these two programs can be
used to show the various sections and
their functions. In
CLEAR, the program
from
0300 through 0314 provides the pro-
mpt message generation; 0315 through
0330 contains the address input and
storage functions;
0331 through 0330
contains the calculation
of the high and
low order bytes
of the length of the area
involved; and the remainder
of the pro-
gram performs the actual data storage
procedure. Location
0340 may be
modified to any value with which it is
desired to load a selected memory area.
Locations
035F - 0361 contain the "CLR"
message.
MICRO -- The 6502 Journal
O:)*=OJOO
/46
OJOO 20 JSR EAIJ
OJOJ AO LDY #00
0J05 B9 LDA 0J5F
OJ08 48 PHA
0J09 29 AND #7F
OJOB 20 JSR E97A
0J0E: C8 INY
C JO r' 68 ?LA
OJ10 10 3PL 0J05
OJ12 20 JSR £8JE
OJ15 20 JSR ?7AJ
OJ18 AD LDA A41C
OJ1E 85 STA 00
OJ1D AD LDA A41D
OJ20 85 STA 01
OJ22 20 JSR
E7A7
OJ25 EO BCS OJ22
0327 AD LDA A41C
°J2A 85 SI'A 02
OJ2C AD T\~ A41J
OJ2F 8) STA OJ
o JJ1 JS S::C
OJ]2 -:'.5 J~JA 02
OJJ4 ~5 SEC 00
cJJ6 85 SI'A 04
OJJ8 A5 L.JA OJ
OJJA £5 SBC 01
OJJC FO EE~ OJ4C
OJ) S AA TAX
CJJ? A9 LDA #00
CJ!.;.l AS TAY
0)42 91 STA (OO),Y
JJJ;~ :3 I~Y
OJ!'; 5 )0 l3i'i:; oJ42
~JL7 ~6 II\C 01
0]1.: SJ C.; J 2X
Jjl--:::' )) ~:\:; O:u2
,}J.J: -:-::6 n;s 04
o;~:: .' .. 9 )JJA .'100
0J50 _~o LDY /100
0352 9~ STA (OJ),Y
')J54 C8 INY
0J55 c4 CPY 04
0357 'JO IN~ 0J52
0J59 20 JSR SAIJ
0J5C
4C J~P SIAl
(j,i) =OJ5F 4J ~.:.: D2
December, 1979