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HP 29E IR GPS What????
05-24-2017, 08:51 AM (This post was last modified: 05-24-2017 09:31 AM by Dieter.)
Post: #2
RE: HP 29E IR GPS What????
(05-24-2017 06:34 AM)Geoff Quickfall Wrote:  Now my 29C ACT was dead but the keyboard was good. I had a 25 with a bad keyboard, good PCA with a bad ACT. Turns out that the 25 ROM has a larger alpha capability then the 29 ROM due to the increased functionality of the 29. However, and this is interesting, by using the 25 PCA with functional ROM, the Panamatik ACT programmed as a 29E in combination with the GPS the functions of the GPS can be displayed in alpha plus data.

Here is a shorter version of the program that frees one label so that you can enter one more timezone/city group. Also the labels now match the register numbers, so that e.g. GSB 1 uses the timezone stored in R 1. I think this is easier to memorize.

Code:
01  LBL 1
02  RCL 1
03  GTO 0
04  LBL 2
05  RCL 2
06  GTO 0
07  LBL 3
08  RCL 3
09  GTO 0
10  LBL 4
11  RCL 4
12  GTO 0
13  LBL 5
14  RCL 5
15  GTO 0
16  LBL 6
17  RCL 6
18  GTO 0
19  LBL 7
20  RCL 7
21  GTO 0
22  LBL 8
23  RCL 8
24  GTO 0
25  LBL 9
26  RCL 9
27  LBL 0
28  RCL 0
29  +
30  2
31  4
32  X<>Y
33  X<0?
34  +
35  2
36  4
37  X>Y?
38  CLX
39  –
40  RTN

You could even use the 29C's indirect register addressing (RCL i), which would require the GPS time in a register other than R 0 ....or maybe just a few more steps: I am not sure how the GPS time function works in detail, but assuming R 0 is still available as a storage register this could be a solution:

Code:
01  LBL 0
02  RCL 0
03  X<>Y
03  STO 0
04  R↓
05  RCL i
06  +
07  2
08  4
09  X<>Y
10  X<0?
11  +
12  2
13  4
14  X>Y?
15  CLX
16  –
17  RTN

Simply enter 1, 2, 3, .... GSB 0 and get the respective local time. This would allow as many timezones / city groups as memory can hold. Since registers up to R ,5 (i.e. 15) are preserved by constant memory, this would mean up to 15 locations. Of course this requires that the content of R 0 is not changed / overwritten by GPS time during the execution of steps 04 and 05. You said "Each call for REG 0 in the program results in the GPS depositing the latest (...) ZULU time" so that I assume that the current time is generated by the RCL 0 command. In this case everything should work fine ...if R 0 can still be used for indirection. Maybe you can give it a try and report here?

Dieter
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Messages In This Thread
HP 29E IR GPS What???? - Geoff Quickfall - 05-24-2017, 06:34 AM
RE: HP 29E IR GPS What???? - Dieter - 05-24-2017 08:51 AM
RE: HP 29E IR GPS What???? - Paul Dale - 05-24-2017, 10:13 AM
RE: HP 29E IR GPS What???? - PANAMATIK - 05-24-2017, 09:40 PM
RE: HP 29E IR GPS What???? - Dieter - 05-25-2017, 03:04 PM
RE: HP 29E IR GPS What???? - PANAMATIK - 05-25-2017, 04:47 PM
RE: HP 29E IR GPS What???? - Dieter - 05-25-2017, 06:11 PM
RE: HP 29E IR GPS What???? - PANAMATIK - 05-25-2017, 07:05 PM
RE: HP 29E IR GPS What???? - Paul Dale - 05-25-2017, 12:48 AM



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