6ad6bd16 |
1 | * F4$DUM - DEC 10 2006 - VERSION 1 |
2 | * |
3 | * FORTRAN COMPILER DUMMY DEVICE DRIVERS AND DATA POOL INITIALISATION |
4 | * |
5 | * THIS MODULE MUST BE THE LAST ONE BEING LINKED TO THE F4 COMPILER. |
6 | * THESE ROUTINES ARE CALLED BY F4-IOS AND THE INITIALISATION ROUTINE |
7 | * IS OVERWRITTEN BY THE DATA POOL AFTER INITIALISATION. |
8 | * |
9 | * HONEYWELL X16 16 BIT COMPUTER SOFTWARE |
10 | * |
11 | * PROGRAM LENGTH: 48 WORDS |
12 | * |
13 | * THIS SOURCE IS RECREATED FROM THE EXISTING SLST FILE: |
14 | * - SLST-FRTN.IMG (WHICH ORIGINATES FROM HONEYWELL) |
15 | * |
16 | * THE SOURCE IS RECREATED BY: THEO ENGEL (THEO.ENGEL@HETNET.NL) |
17 | * |
18 | SUBR F4$INI,SIZE |
19 | SUBR F4$DUM,DUM |
20 | SUBR O$LH |
21 | SUBR O$ME |
22 | * |
23 | SUBR I$AA |
24 | SUBR I$CA |
25 | SUBR I$PA |
26 | SUBR I$MA |
27 | SUBR C$6TO8,C$68 |
28 | * |
29 | SUBR O$PB |
30 | SUBR O$AB |
31 | SUBR O$MB |
32 | * |
33 | SUBR O$LA |
34 | SUBR C$8TO6,C$86 |
35 | SUBR O$MA |
36 | * |
37 | REL |
38 | * |
39 | DUM EQU * |
40 | DAC *-* |
41 | JMP* *-1 |
42 | * |
43 | O$LH EQU * |
44 | O$ME EQU * |
45 | DAC *-* |
46 | IRS *-1 |
47 | JMP* *-2 |
48 | * |
49 | * SOURCE INPUT |
50 | I$AA EQU * |
51 | I$CA EQU * |
52 | I$PA EQU * |
53 | I$MA EQU * |
54 | C$68 EQU * |
55 | DAC *-* DUMMY SOURCE INPUT |
56 | JMP* SI |
57 | * |
58 | * OBJECT OUTPUT |
59 | O$PB EQU * |
60 | O$AB EQU * |
61 | O$MB EQU * |
62 | O$MS EQU * |
63 | DAC *-* DUMMY OBJECT OUTPUT |
64 | JMP* OO |
65 | * |
66 | * LISTING OUTPUT |
67 | O$LA EQU * |
68 | C$86 EQU * |
69 | O$MA EQU * |
70 | DAC *-* DUMMY LISTING OUTPUT |
71 | JMP* LL |
72 | * |
73 | * JUMP TABLE TO APPROPRIATE DUMMY DRIVER IN F4-IOS |
74 | SI XAC F4$DUI POINTER TO DUMMY SOURCE INPUT DEVICE DRIVER |
75 | OO XAC F4$DUO POINTER TO DUMMY OBJECT OUTPUT DEVICE DRIVER |
76 | LL XAC F4$DUS POINTER TO DUMMY LISTING OUTPUT DEVICE DRIVER |
77 | * |
78 | * PURPOSE OF INI ROUTINE IS TWOFOLD: |
79 | * - INITIALIZE THE MEMORY BOUNDARIES BEING USED BY THE F4 COMPILER CODE |
80 | * AND I/O DRIVERS TO DETERMINE THE SPACE FOR THE DATA POOL |
81 | * - INITIALIZE AND LINK THE DATA POOL TO THE F4 COMPILER VIA SECTOR 0 |
82 | * |
83 | DP EQU * START OF DATA POOL |
84 | * |
85 | SIZE DAC *-* |
86 | LDA SIZE GET RETURN ADDRESS |
87 | SUB N1 MINUS 1 |
88 | STA SIZE = CALLING ADDRESS |
89 | LDA NOP |
90 | STA* SIZE REPLACE CALL BY NOP |
91 | NEXT LDA MTOP MEMORY BOUNDARY |
92 | SUB CTOP MINUS CODE LENGTH |
93 | SUB O103 ='103 |
94 | STA LO SAVE DATAPOOL SIZE |
95 | LDA* MTOP CONTENT MEM BOUNDARY |
96 | IAB => B = CONTENT MEM BOUNDARY |
97 | LDA PAT PATTERN |
98 | STA* MTOP STORE PATTERN |
99 | LDA* MTOP AND TRY TO GET IT BACK |
100 | SNZ |
101 | JMP* SIZE MEMORY SIZE = MTOP |
102 | IAB |
103 | STA* MTOP RESTORE CONTENT MEM BOUNDARY |
104 | LDA MTOP |
105 | ADD M4K INCREASE MEM BOUNDARY WITH 4K |
106 | STA MTOP |
107 | ERA UPP 16K?/20K? |
108 | SZE |
109 | JMP NEXT NO |
110 | * |
111 | * THE ADAPTION PROCESS STOPS HERE WHEN MTOP = 16K |
112 | * THE DATA POOL SIZE (LO) IS ADAPTED THEN FOR THE MTOP = 12K |
113 | * FOR A 16K MACHINE THE UPPER 4K IS NOT USED FOR THE DATAPOOL. |
114 | * TO USE THAT UPPER 4K, THE VALUE OF 'UPP' HAS TO CHANCE TO '50000 |
115 | * |
116 | JMP* SIZE YES; STOP IF MTOP = UPP |
117 | * |
118 | * WORKSPACE |
119 | * |
120 | MTOP OCT 20000 MINIMUM MEMORY TOP (8K INIT) |
121 | NOP NOP NOP OPERATION |
122 | CTOP DAC DP CODE TOP |
123 | UPP OCT 40000 16K (20K => '50000) |
124 | M4K OCT 10000 4K |
125 | PAT OCT 12525 MEMORY PATTREN |
126 | O103 OCT 103 ='103 |
127 | N1 OCT 1 |
128 | * |
129 | * |
130 | * THE FOLLOWING TABLE LINKS THE DATA POOL VIA SECTOR 0 TO THE F4 COMPILER |
131 | * |
132 | * |
133 | ABS |
134 | ORG '100 |
135 | DAC DP-4,1 (100) |
136 | DAC DP-3,1 (101) |
137 | DAC DP-2,1 (102) |
138 | DAC DP-1,1 (103) |
139 | DAC DP,1 (104) |
140 | DAC DP+1,1 (105) |
141 | DAC DP+2,1 (106) |
142 | DAC DP+3,1 (107) |
143 | DAC DP+4,1 (110) |
144 | DAC DP+5,1 (111) |
145 | DAC DP+6,1 (112) |
146 | LO DAC DP+7 (113) DATA POOL SIZE |
147 | * |
148 | END |