forked from chrislgarry/Apollo-11
-
Notifications
You must be signed in to change notification settings - Fork 0
/
DAP_INTERFACE_SUBROUTINES.s
176 lines (159 loc) · 4.7 KB
/
DAP_INTERFACE_SUBROUTINES.s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
# Copyright: Public domain.
# Filename: DAP_INTERFACE_SUBROUTINES.agc
# Purpose: Part of the source code for Luminary 1A build 099.
# It is part of the source code for the Lunar Module's (LM)
# Apollo Guidance Computer (AGC), for Apollo 11.
# Assembler: yaYUL
# Contact: Ron Burkey <info@sandroid.org>.
# Website: www.ibiblio.org/apollo.
# Pages: 1406-1409
# Mod history: 2009-05-10 SN (Sergio Navarro). Started adapting
# from the Luminary131/ file of the same
# name, using Luminary099 page images.
#
# This source code has been transcribed or otherwise adapted from
# digitized images of a hardcopy from the MIT Museum. The digitization
# was performed by Paul Fjeld, and arranged for by Deborah Douglas of
# the Museum. Many thanks to both. The images (with suitable reduction
# in storage size and consequent reduction in image quality as well) are
# available online at www.ibiblio.org/apollo. If for some reason you
# find that the images are illegible, contact me at info@sandroid.org
# about getting access to the (much) higher-quality images which Paul
# actually created.
#
# Notations on the hardcopy document read, in part:
#
# Assemble revision 001 of AGC program LMY99 by NASA 2021112-61
# 16:27 JULY 14, 1969
# Page 1406
BANK 20
SETLOC DAPS3
BANK
EBANK= CDUXD
COUNT* $$/DAPIF
# MOD 0 DATE 11/15/66 BY GEORGE W. CHERRY
# MOD 1 1/23/67 MODIFICATION BY PETER ADLER
#
# FUNCTIONAL DESCRIPTION
# HEREIN IS A COLLECTION OF SUBROUTINES WHICH ALLOW MISSION CONTROL PROGRAMS TO CONTROL THE MODE
# AND INTERFACE WITH THE DAP.
#
# CALLING SEQUENCES
# IN INTERRUPT OR WITH INTERRUPT INHIBITED
# TC IBNKCALL
# FCADR ROUTINE
# IN A JOB WITHOUT INTERRUPT INHIBITED
# INHINT
# TC IBNKCALL
# FCADR ROUTINE
# RELINT
#
# OUTPUT
# SEE INDIVIDUAL ROUTINES BELOW
#
# DEBRIS
# A, L, AND SOMETIMES MDUETEMP ODE NOT IN PULSES MODE
# Page 1407
# SUBROUTINE NAMES:
# SETMAXDB, SETMINDB, RESTORDB, PFLITEDB
# MODIFIED: 30 JANUARY 1968 BY P. S. WEISSMAN TO CREATE RESTORDB.
# MODIFIED: 1 MARCH 1968 BY P. S. WEISSMAN TO SAVE EBANK AND CREATE PFLITEDB
#
# FUNCTIONAL DESCRIPTION:
# SETMAXDB -- SET DEADBAND TO 5.0 DEGREES
# SETMINDB -- SET DEADBAND TO 0.3 DEGREE
# RESTORDB -- SET DEADBAND TO MAX OR MIN ACCORDING TO SETTINGS OF DBSELECT BIT OF DAPBOOLS
# PFLITEDB -- SET DEADBAND TO 1.0 DEGREE AND ZERO THE COMMANDED ATTITUDE CHANGE AND COMMANDED RATE
#
# ALL ENTRIES SET UP A NOVAC JOB TO DO 1/ACCS SO THAT THE TJETLAW SWITCH CURVES ARE POSITIONED TO
# REFLECT TEH NEW DEADBAND. IT SHOULD BE NOTED THAT THE DEADBAND REFERS TO THE ATTITUDE IN THE P-, U-, AND V-AXES.
#
# SUBROUTINE CALLED: NOVAC
#
# CALLING SEQUENCE: SAME AS ABOVE
# OR TC RESTORDB +1 FROM ALLCOAST
#
# DEBRIS: A, L, Q, RUPTREG1, (ITEMPS IN NOVAC)
RESTORDB CAE DAPBOOLS # DETERMINE CREW-SELECTED DEADBAND.
MASK DBSELECT
EXTEND
BZF SETMINDB
SETMAXDB CAF WIDEDB # SET 5 DEGREE DEADBAND.
+1 TS DB
EXTEND # SET UP JOB TO RE-POSITION SWITCH CURVES.
QXCH RUPTREG1
CALLACCS CAF PRIO27
TC NOVAC
EBANK= AOSQ
2CADR 1/ACCJOB
TC RUPTREG1 # RETURN TO CALLER.
SETMINDB CAF NARROWDB # SET 0.3 DEGREE DEADBAND.
TCF SETMAXDB +1
PFLITEDB EXTEND # THE RETURN FROM CALLACCS IS TO RUPTREG1.
QXCH RUPTREG1
TC ZATTEROR # ZERO THE ERRORS AND COMMANDED RATES.
CAF POWERDB # SET DB TO 1.0 DEG.
TS DB
TCF CALLACCS # SET UP 1/ACCS AND RETURN TO CALLER.
NARROWDB OCTAL 00155 # 0.3 DEGREE SCALED AT 45.
# Page 1408
WIDEDB OCTAL 03434 # 5.0 DEGREES SCALED AT 45.
POWERDB DEC .02222 # 1.0 DEGREE SCALED AT 45.
ZATTEROR CAF EBANK6
XCH EBANK
TS L # SAVE CALLERS EBANK IN L.
CAE CDUX
TS CDUXD
CAE CDUY
TS CDUYD
CAE CDUZ
TS CDUZD
TCF STOPRATE +3
STOPRATE CAF EBANK6
XCH EBANK
TS L # SAVE CALLERS EBANK IN L.
+3 CAF ZERO
TS OMEGAPD
TS OMEGAQD
TS OMEGARD
TS DELCDUX
TS DELCDUY
TS DELCDUZ
TS DELPEROR
TS DELQEROR
TS DELREROR
LXCH EBANK # RESTORE CALLERS EBANK.
TC Q
# SUBROUTINE NAME: ALLCOAST
# WILL BE CALLED BY FRESH STARTS AND ENGINE OFF ROUTINES.
#
# CALLING SEQUENCE: (SAME AS ABOVE)
#
# EXIT: RETURN TO Q.
#
# SUBROUTINES CALLED: STOPRATE, RESTORDB, NOVAC
#
# ZERO: (FOR ALL AXES) AOS, ALPHA, AOSTERM, OMEGAD, DELCDU, DELEROR
#
# OUTPUT: DRIFTBIT/DAPBOOLS, OE, JOB TO DO 1/ACCS
#
# DEBRIS: A, L, Q, RUPTREG1, RUPTREG2, (ITEMPS IN NOVAC)
ALLCOAST EXTEND # SAVE Q FOR RETURN
QXCH RUPTREG2
# Page 1409
TC STOPRATE # CLEAR RATE INTERFACE. RETURN WITH A=0
LXCH EBANK # AND L=EBANK6. SAVE CALLER'S EBANK.
TS AOSQ
TS AOSQ +1
TS AOSR
TS AOSR +1
TS ALPHAQ # FOR DOWNLIST.
TS ALPHAR
TS AOSQTERM
TS AOSRTERM
LXCH EBANK # RESTORE EBANK (EBANK6 NO LONGER NEEDED)
CS DAPBOOLS # SET UP DRIFTBIT
MASK DRIFTBIT
ADS DAPBOOLS
TC RESTORDB +1 # RESTORE DEADBANK TO CREW-SELECTED VALUE.
TC RUPTREG2 # RETURN.