Source:
https://www.atariarchives.org/basicgames...p?page=175
TRAIN is a program which uses the computer to generate problems with random initial conditions to teach about the time-speed-distance relationship (distance = rate x time). You then input your answer and the computer verifies your response.
TRAIN is merely an example of a student-generated problem. Maximum fun (and benefit) comes more from
writing programs like this as opposed to solving the specific problem posed. Exchange your program with others -- you solve their problem and let them solve yours.
TRAIN was originally written in FOCAL by one student for use by others in his class. It was submitted to us by Walt Koetke, Lexington High School, Lexington, Mass.
BASIC
Code:
1 PRINT TAB(33);"TRAIN"
2 PRINT TAB(15);"CREATIVE COMPUTING MORRISTOWN, NEW JERSEY"
3 PRINT: PRINT: PRINT
4 PRINT "TIME - SPEED DISTANCE EXERCISE": PRINT
10 C=INT(25*RND(1))+40
15 D=INT(15*RND(1))+5
20 T=INT(19*RND(1))+20
25 PRINT " A CAR TRAVELING";C;"MPH CAN MAKE A CERTAIN TRIP IN"
30 PRINT D;"HOURS LESS THAN A TRAIN TRAVELING AT";T;"MPH."
35 PRINT "HOW LONG DOES THE TRIP TAKE BY CAR";
40 INPUT A
45 V=D*T/(C-T)
50 E=INT(ABS((V-A)*100/A)+.5)
55 IF E>5 THEN 70
60 PRINT "GOOD! ANSWER WITHIN";E;"PERCENT."
65 GOTO 80
70 PRINT "SORRY. YOU WERE OFF BY";E;"PERCENT."
80 PRINT "CORRECT ANSWER IS";V;"HOURS."
90 PRINT
95 PRINT "ANOTHER PROBLEM (YES OR NO)";
100 INPUT A$
105 PRINT
110 IF A$="YES" THEN 10
999 END
HP 15-C Code
Code:
001 LBL 0 | 42,21, 0
002 R/S | 31
003 CF 8 | 43, 5, 8
004 RTN | 43 32
005 LBL 1 | 42,21, 1
006 CHS | 16
007 STO I | 44 25
008 LBL 2 | 42,21, 2
009 GTO I | 22 25
010 LBL 3 | 42,21, 3
011 CHS | 16
012 x<>y | 34
013 1 | 1
014 - | 30
015 TEST 0 | 43,30, 0
016 RTN | 43 32
017 R_down | 33
018 STO I | 44 25
019 R_up | 43 33
020 RTN | 43 32
021 LBL B | 42,21,12
022 SF 8 | 43, 4, 8
023 0 | 0
024 GSB 0 | 32 0
025 SF 8 | 43, 4, 8
026 1 | 1
027 GSB 0 | 32 0
028 SF 8 | 43, 4, 8
029 0 | 0
030 GSB 0 | 32 0
031 SF 8 | 43, 4, 8
032 2 | 2
033 GSB 0 | 32 0
034 SF 8 | 43, 4, 8
035 3 | 3
036 GSB 0 | 32 0
037 2 | 2
038 5 | 5
039 RAN# | 42 36
040 * | 20
041 INT | 43 44
042 4 | 4
043 0 | 0
044 + | 40
045 STO 1 | 44 1
046 1 | 1
047 5 | 5
048 RAN# | 42 36
049 * | 20
050 INT | 43 44
051 5 | 5
052 + | 40
053 STO 2 | 44 2
054 1 | 1
055 9 | 9
056 RAN# | 42 36
057 * | 20
058 INT | 43 44
059 2 | 2
060 0 | 0
061 + | 40
062 STO 4 | 44 4
063 SF 8 | 43, 4, 8
064 4 | 4
065 GSB 0 | 32 0
066 RCL 1 | 45 1
067 GSB 0 | 32 0
068 SF 8 | 43, 4, 8
069 5 | 5
070 GSB 0 | 32 0
071 RCL 2 | 45 2
072 GSB 0 | 32 0
073 SF 8 | 43, 4, 8
074 6 | 6
075 GSB 0 | 32 0
076 RCL 4 | 45 4
077 GSB 0 | 32 0
078 SF 8 | 43, 4, 8
079 7 | 7
080 GSB 0 | 32 0
081 SF 8 | 43, 4, 8
082 8 | 8
083 GSB 0 | 32 0
084 SF 9 | 43, 4, 9
085 R/S | 31
086 CF 9 | 43, 5, 9
087 STO 0 | 44 0
088 RCL 2 | 45 2
089 RCL 4 | 45 4
090 * | 20
091 RCL 1 | 45 1
092 RCL 4 | 45 4
093 - | 30
094 / | 10
095 STO 5 | 44 5
096 RCL 5 | 45 5
097 RCL 0 | 45 0
098 - | 30
099 1 | 1
100 0 | 0
101 0 | 0
102 * | 20
103 RCL 0 | 45 0
104 / | 10
105 ABS | 43 16
106 . | 48
107 5 | 5
108 + | 40
109 INT | 43 44
110 STO 3 | 44 3
111 1 | 1
112 3 | 3
113 3 | 3
114 CHS | 16
115 STO I | 44 25
116 5 | 5
117 RCL 3 | 45 3
118 TEST 7 | 43,30, 7
119 GTO I | 22 25
120 SF 8 | 43, 4, 8
121 9 | 9
122 GSB 0 | 32 0
123 RCL 3 | 45 3
124 GSB 0 | 32 0
125 SF 8 | 43, 4, 8
126 1 | 1
127 0 | 0
128 GSB 0 | 32 0
129 1 | 1
130 4 | 4
131 3 | 3
132 GTO 1 | 22 1
133 SF 8 | 43, 4, 8
134 1 | 1
135 1 | 1
136 GSB 0 | 32 0
137 RCL 3 | 45 3
138 GSB 0 | 32 0
139 SF 8 | 43, 4, 8
140 1 | 1
141 0 | 0
142 GSB 0 | 32 0
143 SF 8 | 43, 4, 8
144 1 | 1
145 2 | 2
146 GSB 0 | 32 0
147 RCL 5 | 45 5
148 GSB 0 | 32 0
149 SF 8 | 43, 4, 8
150 1 | 1
151 3 | 3
152 GSB 0 | 32 0
153 SF 8 | 43, 4, 8
154 1 | 1
155 4 | 4
156 GSB 0 | 32 0
157 R/S | 31
Memory Dump
Code:
DM15_M1B
04 000000fffff000 00000000000008 0000000000000c 00000000000eae
08 00000000000000 2faf8befbe2280 00000000000000 00000000000000
14 00000000000000 1b2d2d2d2d2d2d 000000000002e6 00000000000000
18 00000000000000 0000000000007f 00000000a00000 00000000000000
e4 00000000000000 00000000000000 0000000000c220 f4f138ff20f3f1
e8 38ff203520f2f1 38ff20f0f138ff 203320f1f138ff 11f3f4f120f0f1
ec 38ff203320f938 ff887733f597c3 f3f3f143ebfaf5 c0b3fd30fcf0f0
f0 f1fb303545fdfb 3431fc34324049 ffc239ff20f838 ff20f738ff2034
f4 20f638ff203220 f538ff203120f4 38ff44faf0f2eb fca1f9f142faf5
f8 ebfca1f5f141fa f0f4ebfca1f5f2 20f338ff20f238 ff20f038ff20f1
fc 38ff20f038ff0b b2b497c4b270fb f1c5c303880297 c301b248ffc200
A: 000000fffff000 B: 000000fffffeae C: 00000000000eae
S: 00000000000000
M: 395033178ff000 N: 00000000000000 G: 04
How to use
This is a compiled BASIC program, compiled with voyc
https://gitlab.com/michaelzinn/voyc.
You use it like this:
Code:
| Calculator shows | Means | Do |
| :--------------: | :-----------------------: | :---: |
| Number | The number shown | Press R/S to continue |
| Complex number | The text with that number | Look up the text, then press R/S to continue |
| Blinking | Input required | Enter a number, then press R/S to continue (you don't have to press ENTER) |
Strings
Read the appropriate string when a complex number gets displayed:
Code:
0:
1: TRAIN
2: CREATIVE COMPUTING MORRISTOWN, NEW JERSEY
3: TIME - SPEED DISTANCE EXERCISE
4: A CAR TRAVELING
5: MPH CAN MAKE A CERTAIN TRIP IN
6: HOURS LESS THAN A TRAIN TRAVELING AT
7: MPH.
8: HOW LONG DOES THE TRIP TAKE BY CAR
9: GOOD! ANSWER WITHIN
10: PERCENT.
11: SORRY. YOU WERE OFF BY
12: CORRECT ANSWER IS
13: HOURS.
14: ANOTHER PROBLEM (YES OR NO)
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(15C) (BASIC Computer Games) Train (by Walt Koetke)
