HP67 Moon Rocket Lander.

[Mike T.]

Can anyone provide me with a listing of the original 'Moon Rocket Lander' program for the HP97/67 along with a sample program run.

I need a test program and I can't think of a better place to start (well I probably can, but it wouldn't be nearly as nostalgic or as much fun!)

Thanks

Mike T.

[Steve Perkins]

http://www.hpmuseum.org/software/41td/land67.htm

This should be a faithful listing, though presented as a program that can be run on a HP-41 with a card reader. Apparently it came from a genuine HP-67 Moon Lander game program card.

The compatible instructions such as:

7DSP4 or 7DSP0 are just 

DSP 4 and DSP 0 on the 67

Some constants will take up more than one line, especially "50-" which ends up being:

5

0

CHS

Hopefully you can figure out any other oddities.

[Trent Moseley]

The "Standard Pac" program-guide lists 95 steps for the "Moon Rocket Lander".

tm

[Mike T.]

Following the guidance above I get the following program which encouragingly is 95 steps long. However if I just let it run to completion on my HP67 simulator without entering anything it halts with an Error 4 message, could anyone confirm that I have converted all the steps correctly?

001 31 25 11 

002 05 

003 00 

004 00 

005 33 06 

006 05 

007 00 

008 42 

009 33 07 

010 06 

011 00 

012 33 08 

013 31 25 09 

014 34 06 

015 23 04 

016 43 

017 04 

018 81 

019 34 07 

020 35 61 02 

021 31 71 

022 35 51 02 

023 35 64 

024 61 

025 35 71 02 

026 42 

027 35 72 

028 35 72 

029 23 00 

030 34 08 

031 35 72 

032 03 

033 35 72 

034 02 

035 35 72 

036 01 

037 35 72 

038 00 

039 35 72 

040 31 25 05 

041 34 08 

042 35 52 

043 32 81 

044 22 02 

045 33 51 08 

046 02 

047 71 

048 05 

049 51 

050 33 09 

051 02 

052 81 

053 34 06 

054 61 

055 34 07 

056 61 

057 34 09 

058 33 61 07 

059 35 53 

060 33 06 

061 31 83 

062 31 81 

063 22 09 

064 31 25 03 

065 23 00 

066 34 07 

067 34 04 

068 35 72 

069 22 04 

070 31 25 02 

071 34 08 

072 02 

073 83 

074 05 

075 51 

076 33 61 06 

077 02 

078 71 

079 33 61 07 

080 34 06 

081 01 

082 00 

083 71 

084 34 07 

085 32 54 

086 61 

087 31 54 

088 42 

089 22 04 

090 31 25 12 

091 05 

092 33 51 08 

093 00 

094 22 05 

095 84 

Many Thanks


Mike T.

[Bob Frazee]

Mike

Line 067 should be 31 25 04 (f lbl 4), instead of 34 04.  I ran the program like you described, on a real 67 and your emulator gets the same numbers as the real 67.  I also entered 2, 20 unit burns and the velocity an altitude numbers matched, although to get the burns entered, I had to enter the first digit, which stopped the program, then entered the burn again, then hit r/s.  The real calculator takes the burn that was entered during the "0" pause, and keeps on going, no r/s is needed to keep the program running.  Hope this helps.

Bob Frazee

[Bob Frazee]

Well, lets try this again.

Mike

Line 067 should be 31 25 04 (f lbl 4), instead of 34 04. I ran the program like you described, on a real 67 and your emulator gets the same numbers as the real 67. I also entered 2, 20 unit burns and the velocity and altitude numbers matched, although to get the burns entered, I had to enter the first digit, which stopped the program, then entered the burn again, then hit r/s. The real calculator takes the burn that was entered during the "0" pause, and keeps on going, no r/s is needed to keep the program running. Hope this helps.

Bob Frazee

[Trent Moseley]

I ran it through on my 67, and as Bob points out the only error from the original listing is in Line 067 (isn't that a coincidence!): Correct is 31 25 04.

tm

[Mike T.]

Many thanks to you both. Now to fix the problem with digit entry during pause...

Mike T.