The Museum of HP Calculators

Second Order Regulator for the HP-41C/CV/CX

This program is supplied without representation or warranty of any kind. Tony Duell, Hewlett Packard and The Museum of HP Calculators therefore assume no responsibility and shall have no liability, consequential or otherwise, of any kind arising from the use of this program material or any part thereof.

Documentation Information (CD or source code)
How to get this Program to your Calculator (via HP-IL, disk, wand, and fingers)
Download Binary (.raw) program for disk or PC HP-IL Card download
Download Hexadecimal (.dat) program for Serial Port download

Program Listing

LINE  KEYS
 01 LBL "REG 2"
 02 "A11?"
 03 PROMPT
 04 STO 01
 05 "A12?"
 06 PROMPT
 07 STO 02
 08 "A21?"
 09 PROMPT
 10 STO 03
 11 "A22?"
 12 PROMPT
 13 STO 04
 14 "b"
 15 PROMPT
 16 STO 05
 17 LBL C
 18 "Q11?"
 19 PROMPT
 20 "Q12?"
 21 PROMPT
 22 "Q22?"
 23 PROMPT
 24 "R?"
 25 PROMPT
 26 STO 07
 27 /
 28 STO 08
 29 LASTX
 30 *
 31 RCL 01
 32 *
 33 RCL 02
 34 /
 35 X<>Y
 36 2
 37 *
 38 -
 39 RCL 01
 40 *
 41 RCL 02
 42 /
 43 +
 44 RCL 07
 45 /
 46 STO 07
 47 RCL 02
 48 RCL 03
 49 *
 50 RCL 01
 51 RCL 04
 52 *
 53 -
 54 STO 06
 55 RCL 07
 56 SQRT
 57 RCL 05
 58 *
 59 RCL 06
 60 R-P
 61 RCL 06
 62 +
 63 STO 06
 64 2
 65 *
 66 RCL 05
 67 X^2
 68 RCL 08
 69 *
 70 +
 71 SQRT
 72 RCL 01
 73 RCL 04
 74 +
 75 STO 07
 76 R-P
 77 RCL 07
 78 +
 79 STO 07
 80 RCL 01
 81 *
 82 RCL 06
 83 +
 84 STO 06
 85 RCL 05
 86 /
 87 "C1="
 88 XEQ d
 89 RCL 07
 90 RCL 02
 91 *
 92 STO 07
 93 RCL 05
 94 /
 95 "C2="
 96 XEQ d
 97 GTO C
 98 LBL A
 99 RCL 02
100 RCL 03
101 RCL 06
102 -
103 RCL 04
104 RCL 07
105 -
106 RCL 01
107 "A11="
108 XEQ d
109 R^
110 "A12="
111 XEQ d
112 R^
113 "A21="
114 XEQ d
115 R^
116 "A22="
117 LBL d
118 FIX 03
119 ARCL X
120 AVIEW
121 STOP
122 RTN
123 END

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