| 1 | SECT BTSET\r |
| 2 | ENTRY ISHFT\r |
| 3 | ENTRY BITSET\r |
| 4 | ENTRY #ANDER\r |
| 5 | EXTERN #RETRN\r |
| 6 | EXTERN #FIX\r |
| 7 | SECT8 BITTER\r |
| 8 | \r |
| 9 | #ANDER, TAD #XR /Simple masking\r |
| 10 | AND #XR+1\r |
| 11 | DCA #XR\r |
| 12 | CIF CDF\r |
| 13 | JMP% #XR+2 / Return\r |
| 14 | \r |
| 15 | /FPP code here; using the rest of the SECT8 page.\r |
| 16 | \r |
| 17 | SECNAM, TEXT +BITSET+ /For traceback\r |
| 18 | #RET, SETX #XR /Return addr\r |
| 19 | SETB #BASE\r |
| 20 | JA .+3\r |
| 21 | #BASE, ORG .+3 /Base 0\r |
| 22 | N, ORG .+3 /Base 1 - value\r |
| 23 | L, ORG .+3\r |
| 24 | #BSET, TEXT +BITSET+ /Base 2 - section name\r |
| 25 | #ISH, TEXT +ISHFT + /Base 3\r |
| 26 | \r |
| 27 | / Now at address 23, past autoindex registers.\r |
| 28 | #XR, FNOP /XR 0\r |
| 29 | ADDR #RETRN /XR 1; XR2 return to FRTS address.\r |
| 30 | ORG #XR+10 / Space for our index regs\r |
| 31 | \r |
| 32 | ORG #BASE+30\r |
| 33 | FNOP\r |
| 34 | JA #RET\r |
| 35 | FNOP\r |
| 36 | #GOBAK, 0;0\r |
| 37 | #LBL=.\r |
| 38 | COMMON MISCOM\r |
| 39 | LINUSE, ORG .+0003\r |
| 40 | TRVS, ORG .+0003\r |
| 41 | CLSSES, ORG .+0003\r |
| 42 | OLDLOC, ORG .+0003\r |
| 43 | LOC, ORG .+0003\r |
| 44 | CVAL, ORG .+0044\r |
| 45 | TK, ORG .+0074\r |
| 46 | NEWLOC, ORG .+0003\r |
| 47 | KEY, ORG .+0702\r |
| 48 | PLAC, ORG .+0454\r |
| 49 | FIXD, ORG .+0454\r |
| 50 | ACTSPK, ORG .+0151\r |
| 51 | COND, ORG .+0702\r |
| 52 | HINTS, ORG .+0360\r |
| 53 | HNTMAX, ORG .+0003\r |
| 54 | PROP, ORG .+0454\r |
| 55 | TALLY, ORG .+0003\r |
| 56 | TALLY2, ORG .+0003\r |
| 57 | HINTLC, ORG .+0074\r |
| 58 | CHLOC, ORG .+0003\r |
| 59 | CHLOC2, ORG .+0003\r |
| 60 | DSEEN, ORG .+0022\r |
| 61 | DFLAG, ORG .+0003\r |
| 62 | DLOC, ORG .+0022\r |
| 63 | DALTLC, ORG .+0003\r |
| 64 | KEYS, ORG .+0003\r |
| 65 | LAMP, ORG .+0003\r |
| 66 | GRATE, ORG .+0003\r |
| 67 | CAGE, ORG .+0003\r |
| 68 | ROD, ORG .+0003\r |
| 69 | ROD2, ORG .+0003\r |
| 70 | STEPS, ORG .+0003\r |
| 71 | BIRD, ORG .+0003\r |
| 72 | DOOR, ORG .+0003\r |
| 73 | PILLOW, ORG .+0003\r |
| 74 | SNAKE, ORG .+0003\r |
| 75 | FISSUR, ORG .+0003\r |
| 76 | TABLET, ORG .+0003\r |
| 77 | CLAM, ORG .+0003\r |
| 78 | OYSTER, ORG .+0003\r |
| 79 | MAGZIN, ORG .+0003\r |
| 80 | DWARF, ORG .+0003\r |
| 81 | KNIFE, ORG .+0003\r |
| 82 | FOOD, ORG .+0003\r |
| 83 | BOTTLE, ORG .+0003\r |
| 84 | WATER, ORG .+0003\r |
| 85 | OIL, ORG .+0003\r |
| 86 | PLANT, ORG .+0003\r |
| 87 | PLANT2, ORG .+0003\r |
| 88 | AXE, ORG .+0003\r |
| 89 | MIRROR, ORG .+0003\r |
| 90 | DRAGON, ORG .+0003\r |
| 91 | CHASM, ORG .+0003\r |
| 92 | TROLL, ORG .+0003\r |
| 93 | TROLL2, ORG .+0003\r |
| 94 | BEAR, ORG .+0003\r |
| 95 | MESSAG, ORG .+0003\r |
| 96 | VEND, ORG .+0003\r |
| 97 | BATTER, ORG .+0003\r |
| 98 | NUGGET, ORG .+0003\r |
| 99 | COINS, ORG .+0003\r |
| 100 | CHEST, ORG .+0003\r |
| 101 | EGGS, ORG .+0003\r |
| 102 | TRIDNT, ORG .+0003\r |
| 103 | VASE, ORG .+0003\r |
| 104 | EMRALD, ORG .+0003\r |
| 105 | PYRAM, ORG .+0003\r |
| 106 | PEARL, ORG .+0003\r |
| 107 | RUG, ORG .+0003\r |
| 108 | CHAIN, ORG .+0003\r |
| 109 | BACK, ORG .+0003\r |
| 110 | LOOK, ORG .+0003\r |
| 111 | CAVE, ORG .+0003\r |
| 112 | NULL, ORG .+0003\r |
| 113 | ENTRNC, ORG .+0003\r |
| 114 | DPRSSN, ORG .+0003\r |
| 115 | SAY, ORG .+0003\r |
| 116 | LOCK, ORG .+0003\r |
| 117 | THROW, ORG .+0003\r |
| 118 | FIND, ORG .+0003\r |
| 119 | INVENT, ORG .+0003\r |
| 120 | TURNS, ORG .+0003\r |
| 121 | LMWARN, ORG .+0003\r |
| 122 | KNFLOC, ORG .+0003\r |
| 123 | DETAIL, ORG .+0003\r |
| 124 | ABBNUM, ORG .+0003\r |
| 125 | NUMDIE, ORG .+0003\r |
| 126 | MAXDIE, ORG .+0003\r |
| 127 | DKILL, ORG .+0003\r |
| 128 | FOOBAR, ORG .+0003\r |
| 129 | BONUS, ORG .+0003\r |
| 130 | CLOCK1, ORG .+0003\r |
| 131 | CLOCK2, ORG .+0003\r |
| 132 | CLOSNG, ORG .+0003\r |
| 133 | PANIC, ORG .+0003\r |
| 134 | CLOSED, ORG .+0003\r |
| 135 | GAVEUP, ORG .+0003\r |
| 136 | SCORNG, ORG .+0003\r |
| 137 | ODLOC, ORG .+0022\r |
| 138 | STREAM, ORG .+0003\r |
| 139 | SPICES, ORG .+0003\r |
| 140 | ORG #LBL\r |
| 141 | \r |
| 142 | COUNT, ORG .+3\r |
| 143 | ONE, F 1.0\r |
| 144 | \r |
| 145 | \r |
| 146 | /BITSET(L,N) = (COND(L).AND.ISHFT(1,N)) .NE.0\r |
| 147 | \r |
| 148 | BITSET, FLDA #BSET /Section name\r |
| 149 | JSA GETARG /Common setup\r |
| 150 | BASE #BASE\r |
| 151 | \r |
| 152 | FLDA% L /Get array index\r |
| 153 | ATX 1\r |
| 154 | FLDA COND-0003,1 /COND(L)\r |
| 155 | FSTA ITEST / COND(L)\r |
| 156 | LDX 1,0 /Put 1 into shift value\r |
| 157 | FLDA% N /Get N value\r |
| 158 | JEQ #1 /No shift if zero\r |
| 159 | FNEG /Negate\r |
| 160 | ATX 1 /Into register\r |
| 161 | XTA 0 /Get the "1" back\r |
| 162 | ALN 0\r |
| 163 | STARTD\r |
| 164 | ALN 1 /Do the shift\r |
| 165 | STARTF\r |
| 166 | ATX 0 /Put result in place\r |
| 167 | #1, XTA 0 /Get result\r |
| 168 | JSA #FIX\r |
| 169 | ATX 0 /One mask value\r |
| 170 | FLDA ITEST\r |
| 171 | JSA #FIX\r |
| 172 | ATX 1 /The other\r |
| 173 | TRAP3 #ANDER /AND it\r |
| 174 | XTA 0 /Restore value\r |
| 175 | JEQ #GOBAK /Return if zero\r |
| 176 | FLDA ONE /Else one\r |
| 177 | JA #GOBAK /Done.\r |
| 178 | ITEST, ORG .+3 /Test value\r |
| 179 | \r |
| 180 | /\r |
| 181 | / ISHFT entry point\r |
| 182 | /\r |
| 183 | BASE 0\r |
| 184 | ISHFT, FLDA #ISH /Section name\r |
| 185 | JSA GETARG /Common setup\r |
| 186 | \r |
| 187 | BASE #BASE\r |
| 188 | FLDA% N /Get shift count\r |
| 189 | JEQ #SKIP /No need to shift\r |
| 190 | FNEG /Negative shift count goes left\r |
| 191 | ATX 1 /Into XR 1\r |
| 192 | FLDA% L /Get value to shift\r |
| 193 | ALN 0 /Align to right\r |
| 194 | STARTD\r |
| 195 | ALN 1 /Shift\r |
| 196 | STARTF /Done\r |
| 197 | JSA #FIX\r |
| 198 | JA #GOBAK /Done\r |
| 199 | #SKIP, FLDA% L /Get value back\r |
| 200 | JA #GOBAK /Done\r |
| 201 | \r |
| 202 | GETARG, 0;0 /Common setup routine\r |
| 203 | FSTA SECNAM /AC has section name\r |
| 204 | STARTD\r |
| 205 | 0210 /Get caller's return\r |
| 206 | FSTA #GOBAK,0\r |
| 207 | 0200 /Get arg list\r |
| 208 | SETX #XR /Set up index registers\r |
| 209 | SETB #BASE /Set up base page\r |
| 210 | FSTA #BASE /Set up arg list\r |
| 211 | LDX 0,1 /Zero to XR #1\r |
| 212 | FLDA% #BASE,1+ /Get first arg\r |
| 213 | FSTA L\r |
| 214 | FLDA% #BASE,1+ /Second arg\r |
| 215 | FSTA N\r |
| 216 | STARTF\r |
| 217 | JA GETARG /Return\r |
| 218 | END\r |