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(41) JETLOG Program
12-15-2020, 06:06 AM (This post was last modified: 03-20-2021 08:39 PM by Gene.)
Post: #1
(41) JETLOG Program
This was a program my father wrote, it appears to be a flight planning application. I could use some help deciphering it. It does run. Run size and set to 100 to fully load the program


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.txt  jetlog.txt (Size: 3.83 KB / Downloads: 117)
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12-15-2020, 05:23 PM
Post: #2
RE: JETLOG Program
Sounds like a project for Geoff Quickfall Smile
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12-15-2020, 06:44 PM (This post was last modified: 12-15-2020 06:44 PM by WrongWay.)
Post: #3
RE: JETLOG Program
I wasn't sure if it belonged in the software library as it lacks documentation. Any help in deciphering what is going on is greatly appreciated
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12-15-2020, 06:48 PM
Post: #4
RE: JETLOG Program
Set Size to 100
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05-13-2021, 07:13 AM (This post was last modified: 05-13-2021 07:16 AM by Ángel Martin.)
Post: #5
RE: (41) JETLOG Program
(12-15-2020 06:06 AM)WrongWay Wrote:  This was a program my father wrote, it appears to be a flight planning application. I could use some help deciphering it. It does run. Run size and set to 100 to fully load the program

In line 16 there's a GT0 CF but LBL "CF" is nowhere to be found. Is this a typo??
GTO C doesn't look likely either given where the instruction is: no previous test and no LBL after it.
Would be good if you can double check the listing...

Code:
X=0?
GTO 00
SF 03
GTO CF
FS? 00
GTO 01
LBL 00
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05-19-2021, 03:33 PM
Post: #6
RE: (41) JETLOG Program
There is also a REGMOVE command, this code may need the XFunctions module ?
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05-20-2021, 09:59 AM (This post was last modified: 05-20-2021 10:00 AM by Stevetuc.)
Post: #7
RE: (41) JETLOG Program
(05-13-2021 07:13 AM)Ángel Martin Wrote:  
(12-15-2020 06:06 AM)WrongWay Wrote:  This was a program my father wrote, it appears to be a flight planning application. I could use some help deciphering it. It does run. Run size and set to 100 to fully load the program

In line 16 there's a GT0 CF but LBL "CF" is nowhere to be found. Is this a typo??
GTO C doesn't look likely either given where the instruction is: no previous test and no LBL after it.
Would be good if you can double check the listing...

Code:
X=0?
GTO 00
SF 03
GTO CF
FS? 00
GTO 01
LBL 00

It looks like the CF flag is being used for indirection
Ie if CF= 03 GTO CF > GTO LBL 03
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05-21-2021, 05:21 AM
Post: #8
RE: (41) JETLOG Program
(05-20-2021 09:59 AM)Stevetuc Wrote:  It looks like the CF flag is being used for indirection
Ie if CF= 03 GTO CF > GTO LBL 03

I don't think so; if this was the case when are the instructions that follow executed?
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05-22-2021, 01:11 AM
Post: #9
RE: (41) JETLOG Program
(05-21-2021 05:21 AM)Ángel Martin Wrote:  
(05-20-2021 09:59 AM)Stevetuc Wrote:  It looks like the CF flag is being used for indirection
Ie if CF= 03 GTO CF > GTO LBL 03

I don't think so; if this was the case when are the instructions that follow executed?

Is it a clever synthetic though? couldn’t you use the first (top) 10 keys as surrogates for 00-10 in STO and RCL and GTO?

I think a piece of the program is missing though, there aren’t routines sensitive to flag 03?

Todd
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05-22-2021, 05:07 AM
Post: #10
RE: (41) JETLOG Program
(05-22-2021 01:11 AM)twdeckard Wrote:  couldn’t you use the first (top) 10 keys as surrogates for 00-10 in STO and RCL and GTO?

Yes, but 01-10.

Greetings,
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