commit 39ee11b688ccf1b467cc21533144602eb86058aa
Author: Dennis Twardowsky <twardowsky@gmail.com>
Date:   Sun Sep 1 18:11:29 2019 +0200

    First issue

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4b54c9a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+*.exe
+
+*.raw
+*.hex42
diff --git a/originals/asim.hp42s b/originals/asim.hp42s
new file mode 100644
index 0000000..3bb5eab
--- /dev/null
+++ b/originals/asim.hp42s
@@ -0,0 +1,221 @@
+00 { 485-Byte Prgm }
+01 LBL "A-SIM"
+02 MVAR "U_IN"
+03 MVAR "W"
+04 MVAR "GAIN"
+05 VARMENU "A-SIM"
+06 STOP
+07 EXITALL
+08 RCL "REGS"
+09 STO "RSAVE"
+10 -2
+11 10↑X
+12 LBL 06
+13 CF IND ST X
+14 ISG ST X
+15 GTO 06
+16 INDEX "CIR"
+17 J+
+18 J+
+19 [MAX]
+20 J+
+21 [MAX]
+22 X<>Y
+23 R↓
+24 X<Y?
+25 X<>Y
+26 0
+27 5
+28 INDEX "CIR"
+29 LBL 10
+30 RCLEL
+31 X=Y?
+32 ISG ST Z
+33 CLA
+34 R↓
+35 I+
+36 FC? 76
+37 GTO 10
+38 J-
+39 R↓
+40 STO "D"
+41 +
+42 STO "C"
+43 STO "E"
+44 ENTER
+45 DIM "REGS"
+46 CLRG
+47 LBL 18
+48 RCLIJ
+49 VIEW ST Y
+50 CF 01
+51 CF 03
+52 CF 05
+53 RCLEL
+54 SF IND ST X
+55 J+
+56 GTO IND ST X
+57 LBL 02
+58 LBL 03
+59 FS? 00
+60 GTO 17
+61 SF 00
+62 CLST
+63 COMPLEX
+64 STO+ "REGS"
+65 LBL 17
+66 RCLEL
+67 RCL× "W"
+68 -1
+69 SQRT
+70 ×
+71 LBL 01
+72 FS? 01
+73 RCLEL
+74 FC? 03
+75 1/X
+76 STO "X"
+77 J+
+78 RCLEL
+79 STO "A"
+80 J+
+81 RCLEL
+82 STO "B"
+83 J+
+84 I-
+85 X<>Y
+86 X=0?
+87 GTO 12
+88 ENTER
+89 XEQ 09
+90 RCL "A"
+91 RCL "B"
+92 X=0?
+93 GTO 00
+94 XEQ 09
+95 RCL "B"
+96 RCL "A"
+97 XEQ 09
+98 LBL 12
+99 RCL "B"
+100 ENTER
+101 XEQ 09
+102 GTO 00
+103 LBL 04
+104 RCLEL
+105 1
+106 -
+107 RCL× "C"
+108 ENTER
+109 RCL+ "C"
+110 XEQ 19
+111 RCL "GAIN"
+112 1/X
+113 STO "X"
+114 RCLEL
+115 ENTER
+116 ENTER
+117 XEQ 09
+118 LBL 15
+119 1
+120 FS? 06
+121 +/-
+122 STO "X"
+123 RCL ST T
+124 ENTER
+125 J+
+126 RCLEL
+127 X≠0?
+128 XEQ 09
+129 FS?C 06
+130 GTO 16
+131 SF 06
+132 GTO 15
+133 LBL 05
+134 RCLEL
+135 1/X
+136 STO "X"
+137 J+
+138 XEQ 14
+139 J-
+140 CF 07
+141 1
+142 STO "X"
+143 SF 09
+144 XEQ 14
+145 CF 07
+146 CF 09
+147 DSE "E"
+148 LBL 16
+149 J+
+150 I-
+151 CF 04
+152 LBL 00
+153 I+
+154 FC? 76
+155 GTO 18
+156 GTO 07
+157 LBL 14
+158 RCL "E"
+159 RCLEL
+160 XEQ 09
+161 FS? 07
+162 RTN
+163 J+
+164 SF 07
+165 GTO 14
+166 LBL 09
+167 FC? 09
+168 X<>Y
+169 X=Y?
+170 SF 08
+171 1
+172 -
+173 RCL× "C"
+174 +
+175 1
+176 -
+177 RCL "X"
+178 FC? 07
+179 FS?C 08
+180 +/-
+181 STO+ IND ST Y
+182 RTN
+183 LBL 07
+184 CLD
+185 1
+186 RCL "C"
+187 LBL 19
+188 DSE ST X
+189 3
+190 10↑X
+191 ÷
+192 +
+193 0
+194 LBL 11
+195 STO IND ST Y
+196 ISG ST Y
+197 GTO 11
+198 FS? 04
+199 RTN
+200 1
+201 STO 00
+202 RCL "C"
+203 1
+204 NEWMAT
+205 EDIT
+206 LBL 08
+207 ↑
+208 FS? 05
+209 1
+210 DSE "D"
+211 GTO 08
+212 EDIT
+213 RCL "U_IN"
+214 EXITALL
+215 RCL "RSAVE"
+216 CLV "RSAVE"
+217 X<> "REGS"
+218 ÷
+219 EDIT
+220 END
diff --git a/originals/bigfact.hp42s b/originals/bigfact.hp42s
new file mode 100644
index 0000000..6b61457
--- /dev/null
+++ b/originals/bigfact.hp42s
@@ -0,0 +1,75 @@
+00 { 127-Byte Prgm }
+01 LBL "BN!"
+02 REAL?
+03 GTO 02
+04 LBL 01
+05 "Invalid data"
+06 GTO 04
+07 LBL 02
+08 X<0?
+09 GTO 01
+10 FP
+11 X≠0?
+12 GTO 01
+13 CLA
+14 LASTX
+15 254
+16 X<>Y
+17 X≥Y?
+18 GTO 03
+19 N!
+20 ARCL ST X
+21 ENTER
+22 LOG
+23 IP
+24 STO ST Z
+25 10↑X
+26 ÷
+27 X<>Y
+28 GTO 04
+29 LBL 03
+30 ENTER
+31 LN
+32 1
+33 -
+34 RCL ST Y
+35 ×
+36 LASTX
+37 STO+ ST X
+38 PI
+39 ×
+40 SQRT
+41 LN
+42 +
+43 R↑
+44 12
+45 ×
+46 1/X
+47 ENTER
+48 R↑
+49 X↑2
+50 ÷
+51 30
+52 ÷
+53 -
+54 +
+55 10
+56 LN
+57 ÷
+58 IP
+59 LASTX
+60 FP
+61 10↑X
+62 1ᴇ6
+63 ×
+64 0.5
+65 +
+66 IP
+67 1ᴇ6
+68 ÷
+69 ARCL ST X
+70 ⊢"ᴇ"
+71 X<>Y
+72 AIP
+73 LBL 04
+74 AVIEW
\ No newline at end of file
diff --git a/originals/clear.hp42s b/originals/clear.hp42s
new file mode 100644
index 0000000..6ed0cd5
--- /dev/null
+++ b/originals/clear.hp42s
@@ -0,0 +1,12 @@
+00 { 24-Byte Prgm }
+01 LBL "CLEAR"
+02 CLST
+03 CLA
+04 CLRG
+05 CLKEYS
+06 CLMENU
+07 SIZE 25
+08 FIX 04
+09 ×
+10 STOP
+11 END
\ No newline at end of file
diff --git a/originals/dsim.hp42s b/originals/dsim.hp42s
new file mode 100644
index 0000000..5af8225
--- /dev/null
+++ b/originals/dsim.hp42s
@@ -0,0 +1,225 @@
+00 { 490-Byte Prgm }
+01 LBL "D-SIM"
+02 RCL "REGS"
+03 STO "RSAVE"
+04 ALL
+05 INDEX "DC"
+06 J+
+07 [MAX]
+08 J+
+09 [MAX]
+10 X<>Y
+11 R↓
+12 X<Y?
+13 X<>Y
+14 J+
+15 [MAX]
+16 X<>Y
+17 R↓
+18 X<Y?
+19 X<>Y
+20 6
+21 ÷
+22 IP
+23 1
+24 +
+25 6
+26 ×
+27 STO "M"
+28 ENTER
+29 ENTER
+30 2
+31 ×
+32 1
+33 +
+34 1
+35 DIM "REGS"
+36 CLRG
+37 R↓
+38 R↓
+39 6
+40 -
+41 1ᴇ3
+42 ÷
+43 6ᴇ-5
+44 +
+45 STO 00
+46 LBL 15
+47 1
+48 XEQ 11
+49 KEY 1 GTO A
+50 2
+51 XEQ 11
+52 KEY 2 GTO B
+53 3
+54 XEQ 11
+55 KEY 3 GTO C
+56 4
+57 XEQ 11
+58 KEY 4 GTO D
+59 5
+60 XEQ 11
+61 KEY 5 GTO E
+62 6
+63 XEQ 11
+64 KEY 6 GTO F
+65 KEY 7 GTO G
+66 KEY 8 GTO H
+67 KEY 9 GTO I
+68 MENU
+69 CLX
+70 STOP
+71 GTO 14
+72 LBL A
+73 1
+74 LBL 12
+75 RCL+ 00
+76 1
+77 RCL- IND ST Y
+78 STO IND ST Y
+79 GTO 15
+80 LBL B
+81 2
+82 GTO 12
+83 LBL C
+84 3
+85 GTO 12
+86 LBL D
+87 4
+88 GTO 12
+89 LBL E
+90 5
+91 GTO 12
+92 LBL F
+93 6
+94 GTO 12
+95 LBL G
+96 RCL 00
+97 6
+98 -
+99 X≥0?
+100 STO 00
+101 GTO 15
+102 LBL H
+103 ISG 00
+104 GTO 15
+105 RCL 00
+106 FP
+107 STO 00
+108 GTO 15
+109 LBL 14
+110 RCL "M"
+111 1ᴇ3
+112 ÷
+113 STO "C"
+114 INDEX "REGS"
+115 2
+116 1
+117 STOIJ
+118 RCL "M"
+119 X<>Y
+120 GETM
+121 RCL "M"
+122 2
+123 +
+124 1
+125 STOIJ
+126 R↓
+127 R↓
+128 PUTM
+129 INDEX "DC"
+130 LBL 13
+131 RCLIJ
+132 VIEW ST Y
+133 RCLEL
+134 J+
+135 RCLEL
+136 J+
+137 RCLEL
+138 J+
+139 RCLEL
+140 SF 30
+141 RCL IND ST X
+142 X<>Y
+143 SF 30
+144 RCL IND ST X
+145 XEQ IND ST T
+146 X<>Y
+147 RCL "M"
+148 +
+149 X<>Y
+150 STO IND ST Y
+151 J+
+152 FC? 77
+153 GTO 13
+154 INDEX "REGS"
+155 RCL "M"
+156 2
+157 +
+158 1
+159 STOIJ
+160 RCL "M"
+161 X<>Y
+162 GETM
+163 2
+164 1
+165 STOIJ
+166 RCL "M"
+167 X<>Y
+168 GETM
+169 X<>Y
+170 R↓
+171 X<>Y
+172 PUTM
+173 X=Y?
+174 GTO 17
+175 INDEX "DC"
+176 ISG "C"
+177 GTO 13
+178 "UNSTABLE"
+179 AVIEW
+180 GTO 15
+181 LBL 17
+182 "READY"
+183 AVIEW
+184 GTO 15
+185 LBL 01
+186 AND
+187 RTN
+188 LBL 02
+189 AND
+190 GTO 16
+191 LBL 03
+192 OR
+193 RTN
+194 LBL 04
+195 OR
+196 GTO 16
+197 LBL 05
+198 XOR
+199 RTN
+200 LBL 06
+201 XOR
+202 LBL 16
+203 1
+204 XOR
+205 RTN
+206 LBL 07
+207 X<>Y
+208 R↓
+209 1
+210 XOR
+211 RTN
+212 LBL 11
+213 RCL+ 00
+214 "N"
+215 AIP
+216 ⊢":"
+217 ARCL IND ST X
+218 RTN
+219 LBL I
+220 RCL "RSAVE"
+221 CLV "RSAVE"
+222 STO "REGS"
+223 CLST
+224 END
\ No newline at end of file
diff --git a/originals/fctr.hp42s b/originals/fctr.hp42s
new file mode 100644
index 0000000..bd24c3c
--- /dev/null
+++ b/originals/fctr.hp42s
@@ -0,0 +1,203 @@
+00 { 463-Byte Prgm }
+01 LBL "FCTR"
+02 STO "X_FCTR"
+03 R↓
+04 STO "Y_FCTR"
+05 R↓
+06 STO "Z_FCTR"
+07 R↓
+08 STO "T_FCTR"
+09 LASTX
+10 STO "L_FCTR"
+11 RCL "REGS"
+12 STO "R_FCTR"
+13 SIZE 02
+14 CLA
+15 R↑
+16 1
+17 X<>Y
+18 0
+19 FS?C 00
+20 X<> ST Z
+21 STO 01
+22 R↓
+23 REAL?
+24 GTO 05
+25 LBL 06
+26 "Invalid type"
+27 GTO 04
+28 LBL 05
+29 FP
+30 X≠0?
+31 GTO 06
+32 LASTX
+33 X<0?
+34 "-"
+35 ABS
+36 X=0?
+37 GTO 06
+38 1ᴇ8
+39 X>Y?
+40 GTO 00
+41 "Out of range"
+42 GTO 04
+43 LBL 01
+44 STO 00
+45 X<>Y
+46 STO ST Y
+47 LASTX
+48 FS? 00
+49 ⊢"*"
+50 SF 00
+51 AIP
+52 ÷
+53 STO ST Y
+54 LASTX
+55 MOD
+56 X≠0?
+57 RTN
+58 ⊢"↑"
+59 LBL 02
+60 X<>Y
+61 STO ST Y
+62 LASTX
+63 ÷
+64 ISG 00
+65 RTN
+66 STO ST Y
+67 LASTX
+68 MOD
+69 X=0?
+70 GTO 02
+71 X<>Y
+72 RCL 00
+73 ISG ST X
+74 RTN
+75 AIP
+76 RTN
+77 LBL 00
+78 R↓
+79 STO ST Y
+80 1
+81 X=Y?
+82 AIP
+83 R↓
+84 2
+85 MOD
+86 X=0?
+87 XEQ 01
+88 X<>Y
+89 STO ST Y
+90 3
+91 MOD
+92 X=0?
+93 XEQ 01
+94 X<>Y
+95 STO ST Y
+96 5
+97 MOD
+98 X=0?
+99 XEQ 01
+100 X<>Y
+101 STO ST Y
+102 7
+103 MOD
+104 X=0?
+105 XEQ 01
+106 LBL 03
+107 X<>Y
+108 STO ST Y
+109 LASTX
+110 4
+111 +
+112 MOD
+113 X=0?
+114 XEQ 01
+115 X<>Y
+116 STO ST Y
+117 LASTX
+118 2
+119 +
+120 MOD
+121 X=0?
+122 XEQ 01
+123 X<>Y
+124 STO ST Y
+125 LASTX
+126 4
+127 +
+128 MOD
+129 X=0?
+130 XEQ 01
+131 X<>Y
+132 STO ST Y
+133 LASTX
+134 2
+135 +
+136 MOD
+137 X=0?
+138 XEQ 01
+139 X<>Y
+140 STO ST Y
+141 LASTX
+142 4
+143 +
+144 MOD
+145 X=0?
+146 XEQ 01
+147 X<>Y
+148 STO ST Y
+149 LASTX
+150 6
+151 +
+152 MOD
+153 X=0?
+154 XEQ 01
+155 X<>Y
+156 STO ST Y
+157 LASTX
+158 2
+159 +
+160 MOD
+161 X=0?
+162 XEQ 01
+163 X<>Y
+164 STO ST Y
+165 LASTX
+166 6
+167 +
+168 MOD
+169 X=0?
+170 XEQ 01
+171 X<>Y
+172 LASTX
+173 X↑2
+174 X≤Y?
+175 GTO 03
+176 1
+177 RCL ST Z
+178 X=Y?
+179 GTO 04
+180 FS? 00
+181 ⊢"*"
+182 AIP
+183 LBL 04
+184 AVIEW
+185 CF 00
+186 RCL 01
+187 X>0?
+188 SF 00
+189 RCL "R_FCTR"
+190 STO "REGS"
+191 RCL "L_FCTR"
+192 STO ST L
+193 RCL "T_FCTR"
+194 RCL "Z_FCTR"
+195 RCL "Y_FCTR"
+196 RCL "X_FCTR"
+197 CLV "R_FCTR"
+198 CLV "L_FCTR"
+199 CLV "T_FCTR"
+200 CLV "Z_FCTR"
+201 CLV "Y_FCTR"
+202 CLV "X_FCTR"
\ No newline at end of file
diff --git a/originals/mort.hp42s b/originals/mort.hp42s
new file mode 100644
index 0000000..e1047cc
--- /dev/null
+++ b/originals/mort.hp42s
@@ -0,0 +1,75 @@
+00 { 220-Byte Prgm }
+01 LBL "MORT"
+02 PGMSLV "TVM"
+03 LBL 99
+04 VARMENU "TVM"
+05 STOP
+06 "DUE"
+07 KEY 1 GTO 01
+08 "FV"
+09 KEY 2 GTO 02
+10 "PV"
+11 KEY 3 GTO 03
+12 "I"
+13 KEY 4 GTO 04
+14 "N"
+15 KEY 5 GTO 05
+16 "PMT"
+17 KEY 6 GTO 06
+18 MENU
+19 LBL 07
+20 STOP
+21 GTO 07
+22 GTO 99
+23 LBL 01
+24 "1=due,0=arrears"
+25 AVIEW
+26 PSE
+27 GTO 99
+28 LBL 02
+29 SOLVE "FV"
+30 GTO 99
+31 LBL 03
+32 SOLVE "PV"
+33 GTO 99
+34 LBL 04
+35 SOLVE "I"
+36 GTO 99
+37 LBL 05
+38 SOLVE "N"
+39 GTO 99
+40 LBL 06
+41 SOLVE "PMT"
+42 GTO 99
+43 END
+44 LBL "TVM"
+45 MVAR "DUE"
+46 MVAR "FV"
+47 MVAR "PV"
+48 MVAR "i"
+49 MVAR "N"
+50 MVAR "PMT"
+51 1
+52 1
+53 RCL+ "i"
+54 RCL "N"
+55 +/-
+56 Y↑X
+57 -
+58 RCL÷ "i"
+59 RCL× "PMT"
+60 1
+61 RCL "i"
+62 RCL× "DUE"
+63 +
+64 ×
+65 +/-
+66 1
+67 RCL+ "i"
+68 RCL "N"
+69 +/-
+70 Y↑X
+71 RCL× "FV"
+72 -
+73 RCL+ "PV"
+74 END
\ No newline at end of file
diff --git a/originals/qpi.hp42s b/originals/qpi.hp42s
new file mode 100644
index 0000000..0044472
--- /dev/null
+++ b/originals/qpi.hp42s
@@ -0,0 +1,390 @@
+00 { 863-Byte Prgm }
+01 LBL "QPI"
+02 STO "X_QPI"
+03 R↓
+04 STO "Y_QPI"
+05 R↓
+06 STO "Z_QPI"
+07 R↓
+08 STO "T_QPI"
+09 LASTX
+10 STO "L_QPI"
+11 RCL "REGS"
+12 STO "R_QPI"
+13 R↑
+14 18
+15 1
+16 NEWMAT
+17 STO "REGS"
+18 LASTX
+19 FS?C 00
+20 STO 16
+21 RCL ST Z
+22 CLA
+23 CPX?
+24 GTO 37
+25 REAL?
+26 GTO 14
+27 "Invalid type"
+28 GTO 11
+29 LBL 14
+30 XEQ 36
+31 GTO 11
+32 LBL 37
+33 FS? 37
+34 →REC
+35 COMPLEX
+36 X≠0?
+37 GTO 27
+38 R↓
+39 GTO 14
+40 LBL 27
+41 STO 17
+42 X<>Y
+43 X=0?
+44 GTO 32
+45 "("
+46 XEQ 36
+47 FS? 00
+48 GTO 11
+49 ⊢","
+50 RCL 17
+51 XEQ 36
+52 FC? 00
+53 ⊢")"
+54 GTO 11
+55 LBL 32
+56 X<>Y
+57 XEQ 36
+58 FC? 00
+59 ⊢"*i"
+60 GTO 11
+61 LBL 36
+62 ENTER
+63 SIGN
+64 STO 00
+65 ×
+66 STO 15
+67 1ᴇ10
+68 X>Y?
+69 GTO 25
+70 "Out of range"
+71 SF 00
+72 RTN
+73 LBL 25
+74 0.111111111
+75 ENTER
+76 RND
+77 -
+78 X=0?
+79 9ᴇ-10
+80 1ᴇ-10
+81 +
+82 LOG
+83 IP
+84 10↑X
+85 STO 01
+86 4ᴇ-3
+87 STO 03
+88 LBL 05
+89 0
+90 STO 12
+91 1
+92 STO 08
+93 20
+94 RCL+ 03
+95 XEQ IND ST X
+96 RCL 04
+97 RCL 15
+98 X>Y?
+99 GTO 06
+100 STO ST Y
+101 RCL 01
+102 +
+103 RCL ST Y
+104 LASTX
+105 -
+106 XEQ IND 03
+107 STO 05
+108 R↓
+109 XEQ IND 03
+110 STO 06
+111 R↓
+112 XEQ IND 03
+113 STO 07
+114 STO 02
+115 X≥0?
+116 GTO 07
+117 +/-
+118 STO 07
+119 RCL ST T
+120 +/-
+121 X<> 05
+122 +/-
+123 STO 06
+124 LBL 07
+125 RCL 07
+126 STO 13
+127 IP
+128 LBL 28
+129 RCL 05
+130 X<>Y
+131 RCL÷ 08
+132 X<Y?
+133 GTO 26
+134 RCL 06
+135 X≥Y?
+136 GTO 30
+137 LBL 26
+138 RCL 12
+139 RCL 13
+140 ENTER
+141 IP
+142 -
+143 1/X
+144 STO 13
+145 IP
+146 RCL 08
+147 STO 12
+148 ×
+149 +
+150 STO 08
+151 RCL 11
+152 X<>Y
+153 X>Y?
+154 GTO 06
+155 RCL× 07
+156 0.5
+157 +
+158 IP
+159 GTO 28
+160 LBL 30
+161 RCL 08
+162 STO 09
+163 LASTX
+164 STO 10
+165 RCL 03
+166 IP
+167 STO 14
+168 X≠0?
+169 GTO 09
+170 RCL ST Z
+171 100
+172 X>Y?
+173 GTO 10
+174 GTO 06
+175 LBL 09
+176 RCL ST Y
+177 10
+178 X>Y?
+179 GTO 10
+180 LBL 06
+181 ISG 03
+182 GTO 05
+183 LBL 10
+184 RCL 14
+185 3
+186 X=Y?
+187 GTO 29
+188 RCL 00
+189 X<0?
+190 ⊢"-"
+191 LBL 29
+192 15
+193 RCL+ 14
+194 XEQ IND ST X
+195 RTN
+196 LBL 00
+197 RTN
+198 LBL 01
+199 X↑2
+200 RTN
+201 LBL 02
+202 PI
+203 ÷
+204 RTN
+205 LBL 03
+206 RCL× 00
+207 E↑X
+208 RCL× 00
+209 RTN
+210 LBL 04
+211 LN
+212 RTN
+213 LBL 20
+214 1ᴇ12
+215 STO 04
+216 STO 11
+217 RTN
+218 LBL 21
+219 5ᴇ5
+220 SQRT
+221 STO 04
+222 1ᴇ3
+223 GTO 12
+224 LBL 22
+225 100
+226 PI
+227 ×
+228 STO 04
+229 1ᴇ3
+230 GTO 12
+231 LBL 23
+232 1ᴇ3
+233 LN
+234 STO 04
+235 50
+236 GTO 12
+237 LBL 24
+238 1ᴇ499
+239 STO 04
+240 50
+241 LBL 12
+242 RCL 09
+243 X>Y?
+244 X<>Y
+245 STO 11
+246 RTN
+247 LBL 15
+248 RCL 10
+249 AIP
+250 1
+251 RCL 09
+252 X=Y?
+253 RTN
+254 ⊢"/"
+255 AIP
+256 RTN
+257 LBL 16
+258 RCL 09
+259 XEQ 31
+260 STO 03
+261 RCL 02
+262 STO 09
+263 RCL 10
+264 XEQ 31
+265 STO 05
+266 RCL 02
+267 RCL ST Y
+268 SQRT
+269 FP
+270 X≠0?
+271 GTO 35
+272 R↓
+273 X<>Y
+274 SQRT
+275 ×
+276 1
+277 STO 05
+278 LBL 35
+279 R↓
+280 STO 10
+281 RCL 09
+282 X≠Y?
+283 SF 00
+284 X≠Y?
+285 XEQ 15
+286 RCL 05
+287 STO 10
+288 RCL 03
+289 STO 09
+290 FS?C 00
+291 ⊢"*"
+292 ⊢"√"
+293 LBL 13
+294 ⊢"("
+295 FS?C 00
+296 ⊢"-"
+297 XEQ 15
+298 ⊢")"
+299 RTN
+300 LBL 17
+301 XEQ 15
+302 ⊢"*π"
+303 RTN
+304 LBL 18
+305 ⊢"LN"
+306 GTO 13
+307 LBL 19
+308 ⊢"EXP"
+309 RCL 02
+310 X<0?
+311 SF 00
+312 GTO 13
+313 LBL 31
+314 STO 01
+315 1
+316 STO 02
+317 38
+318 STO 06
+319 LBL 08
+320 XEQ IND 06
+321 STO 07
+322 R↓
+323 STO 08
+324 RCL 01
+325 XEQ 33
+326 RCL 01
+327 X<>Y
+328 ÷
+329 XEQ 33
+330 STO× 02
+331 X↑2
+332 STO÷ 01
+333 1
+334 X≠Y?
+335 GTO 08
+336 RCL 07
+337 RCL 01
+338 X<Y?
+339 RTN
+340 1
+341 STO+ 06
+342 GTO 08
+343 LBL 33
+344 RCL 08
+345 LBL 34
+346 MOD
+347 LASTX
+348 X<>Y
+349 X>0?
+350 GTO 34
+351 R↓
+352 RTN
+353 LBL 38
+354 200560490130
+355 1369
+356 RTN
+357 LBL 39
+358 584803025179
+359 4489
+360 RTN
+361 LBL 40
+362 202652143553
+363 9409
+364 RTN
+365 LBL 41
+366 11769028333
+367 1ᴇ9
+368 RTN
+369 LBL 11
+370 AVIEW
+371 CF 00
+372 RCL 16
+373 X>0?
+374 SF 00
+375 RCL "R_QPI"
+376 STO "REGS"
+377 RCL "L_QPI"
+378 STO ST L
+379 RCL "T_QPI"
+380 RCL "Z_QPI"
+381 RCL "Y_QPI"
+382 RCL "X_QPI"
+383 CLV "R_QPI"
+384 CLV "L_QPI"
+385 CLV "T_QPI"
+386 CLV "Z_QPI"
+387 CLV "Y_QPI"
+388 CLV "X_QPI"
+389 END
diff --git a/originals/res-c.hp42s b/originals/res-c.hp42s
new file mode 100644
index 0000000..808a0ea
--- /dev/null
+++ b/originals/res-c.hp42s
@@ -0,0 +1,63 @@
+00 { 143-Byte Prgm }
+01 LBL "RES-C"
+02 X≤0?
+03 GTO 11
+04 CLA
+05 ENTER
+06 ENTER
+07 LOG
+08 IP
+09 1
+10 -
+11 STO ST Z
+12 10↑X
+13 ÷
+14 10
+15 ÷
+16 IP
+17 XEQ IND ST X
+18 ⊢" "
+19 R↓
+20 LASTX
+21 FP
+22 10
+23 ×
+24 XEQ IND ST X
+25 ⊢" "
+26 XEQ IND ST Y
+27 R↑
+28 GTO 10
+29 LBL 00
+30 ⊢"BLACK"
+31 RTN
+32 LBL 01
+33 ⊢"BROWN"
+34 RTN
+35 LBL 02
+36 ⊢"RED"
+37 RTN
+38 LBL 03
+39 ⊢"ORANGE"
+40 RTN
+41 LBL 04
+42 ⊢"YELLOW"
+43 RTN
+44 LBL 05
+45 ⊢"GREEN"
+46 RTN
+47 LBL 06
+48 ⊢"BLUE"
+49 RTN
+50 LBL 07
+51 ⊢"VIOLET"
+52 RTN
+53 LBL 08
+54 ⊢"GREY"
+55 RTN
+56 LBL 09
+57 ⊢"WHITE"
+58 RTN
+59 LBL 10
+60 AVIEW
+61 LBL 11
+62 END
\ No newline at end of file
diff --git a/originals/res-v.hp42s b/originals/res-v.hp42s
new file mode 100644
index 0000000..a5f9e88
--- /dev/null
+++ b/originals/res-v.hp42s
@@ -0,0 +1,89 @@
+00 { 228-Byte Prgm }
+01 LBL "RES-V"
+02 SF 01
+03 SF 02
+04 LBL 00
+05 CLMENU
+06 "BLAC"
+07 KEY 1 XEQ 01
+08 "BROW"
+09 KEY 2 XEQ 02
+10 "RED"
+11 KEY 3 XEQ 03
+12 "ORANG"
+13 KEY 4 XEQ 04
+14 "YELLO"
+15 KEY 5 XEQ 05
+16 "GREE"
+17 KEY 6 XEQ 06
+18 KEY 7 GTO 11
+19 KEY 8 GTO 11
+20 KEY 9 GTO 12
+21 MENU
+22 STOP
+23 GTO 00
+24 LBL 11
+25 CLMENU
+26 "BLUE"
+27 KEY 1 XEQ 07
+28 "VIOLE"
+29 KEY 2 XEQ 08
+30 "GREY"
+31 KEY 3 XEQ 09
+32 "WHITE"
+33 KEY 4 XEQ 10
+34 KEY 7 GTO 00
+35 KEY 8 GTO 00
+36 KEY 9 GTO 12
+37 MENU
+38 STOP
+39 GTO 11
+40 LBL 01
+41 0
+42 GTO 13
+43 LBL 02
+44 1
+45 GTO 13
+46 LBL 03
+47 2
+48 GTO 13
+49 LBL 04
+50 3
+51 GTO 13
+52 LBL 05
+53 4
+54 GTO 13
+55 LBL 06
+56 5
+57 GTO 13
+58 LBL 07
+59 6
+60 GTO 13
+61 LBL 08
+62 7
+63 GTO 13
+64 LBL 09
+65 8
+66 GTO 13
+67 LBL 10
+68 9
+69 LBL 13
+70 FS?C 01
+71 RTN
+72 FC?C 02
+73 GTO 14
+74 X<>Y
+75 10
+76 ×
+77 +
+78 RTN
+79 LBL 14
+80 SF 01
+81 SF 02
+82 10↑X
+83 ×
+84 "VALUE: "
+85 ARCL ST X
+86 AVIEW
+87 LBL 12
+88 END
\ No newline at end of file
diff --git a/originals/unixtime.free42 b/originals/unixtime.free42
new file mode 100644
index 0000000..68e8df2
--- /dev/null
+++ b/originals/unixtime.free42
@@ -0,0 +1,37 @@
+00 { 105-Byte Prgm }
+01 LBL "UTIME"
+02 DATE
+03 TIME
+04 LBL "T2U"
+05 1.01197
+06 RCL ST Z
+07 DDAYS
+08 24
+09 ×
+10 X<>Y
+11 →HR
+12 SF 25
+13 RCL- "TZOFF"
+14 CF 25
+15 +
+16 3600
+17 ×
+18 RTN
+19 LBL "U2T"
+20 3600
+21 ÷
+22 SF 25
+23 RCL+ "TZOFF"
+24 CF 25
+25 RCL ST X
+26 24
+27 ÷
+28 IP
+29 1.01197
+30 X<>Y
+31 DATE+
+32 X<>Y
+33 24
+34 MOD
+35 →HMS
+36 END
\ No newline at end of file
diff --git a/q2x.free42 b/q2x.free42
new file mode 100644
index 0000000..9e68cad
--- /dev/null
+++ b/q2x.free42
@@ -0,0 +1,140 @@
+00 { 164-Byte Prgm }
+
+01 LBL "Q2F"
+
+02 SIZE 25
+03 CLRG
+
+// Save Stack
+04 STO 01
+05 R↓
+06 STO 02
+07 R↓
+08 STO 03
+09 R↓
+10 STO 04
+11 R↓
+
+// Get precision
+12 8
+13 FS? 36
+14 STO+ 05
+15 4
+16 FS? 37
+17 STO+ 05
+18 2
+19 FS? 38
+20 STO+ 05
+21 1
+22 FS? 39
+23 STO+ 05
+24 RCL 05
+// If precision is 0, set default to 9
+25 X=0?
+26 9
+27 +/-
+28 10↑X
+29 STO 05
+
+// Init counter
+30 10
+31 1000
+32 ÷
+33 0.00001
+34 +
+35 STO 06
+36 10
+37 STO 07
+
+38 CLST
+39 RCL 01
+
+// [[A]] [LOOP-BEGIN] Build continued fraction
+40 LBL A
+41 ENTER
+42 IP
+43 STO IND 07
+44 X<>Y
+45 FP
+46 STO 08
+
+// Check if configured tolerance is reached --> goto B
+47 RCL 05
+48 X>Y?
+49 GTO B
+// .. if not, roll-down check value
+50 R↓
+// ... and invert result for next round
+51 1/X
+
+// Increase REG-index
+52 1
+53 STO+ 07
+54 R↓
+
+// Proceed, if max num of rounds is reached --> repeat A
+55 ISG 06
+56 GTO A
+// [LOOP-END] Build continued fraction
+57 GTO C
+
+// [[B]] FINISHED building continued fraction by tolerance
+58 LBL B
+// Remove last stack entry used for tolerance check
+59 R↓
+
+// [[C]] FINISHED building continued fraction by max num of rounds
+60 LBL C
+
+// Init loop for reverse calculation from old value
+61 RCL 06
+62 IP
+63 0.00001
+64 +
+65 STO 06
+
+// Start calculation of final fraction
+// NOTE: 1. fraction always has nominator =1
+66 CLST
+67 1
+68 RCL IND 07
+69 PRSTK
+
+// [[D]] [LOOP-BEGIN] Reverse calculation
+70 LBL D
+71 ENTER
+72 R↓
+73 X<>Y
+74 R↑
+
+// Decrease REG-index
+75 1
+76 STO- 07
+77 CLX
+
+78 RCL IND 07
+79 ×
+80 +
+81 PRSTK
+
+82 DSE 06
+83 GTO D
+// [LOOP-END] Perform reverse calculation
+
+// Prepare Alpha-Register
+84 CLA
+85 AIP
+86 X<>Y
+87 ⊢"/"
+88 AIP
+
+// Revert Stack
+89 RCL 04
+90 RCL 03
+91 RCL 02
+92 RCL 01
+
+// Show Result
+//90 AVIEW
+
+93 END