Cowgol Improvements

- Replaced COWFIX.COM with updated version - Added Adventure game source to disk image Credit and thanks to Ladislau Szilagyi. Co-Authored-By: ladislau szilagyi <87603175+Laci1953@users.noreply.github.com>
2 years ago · 33cbdd2040
10 changed files with 6100 additions and 2 deletions
--- a/Source/Images/d_cowgol/Readme.txt
+++ b/Source/Images/d_cowgol/Readme.txt
@ -39,7 +39,18 @@ applications which can be used as follows:
    SUBMIT HEXDUMP
    SUBMIT DYNMSORT
 -- WBW 12:38 PM 2/10/2024    
 -- WBW 12:38 PM 2/10/2024
 The Adventure game program source has been added.  The command to
 build the source is:
    COWGOL ADVENT.COW ADVMAIN.COW XRND.AS
 or you can use the SUBMIT file:
    SUBMIT ADVENT
 WARNING: You will need to build this application under CP/M 3 because
 COWGOL needs more main memory than is available under CP/M 2.2.
 -- WBW 11:43 AM 2/25/2024
--- a/Source/Images/d_cowgol/u0/ADVENT.COW
+++ b/Source/Images/d_cowgol/u0/ADVENT.COW
--- a/Source/Images/d_cowgol/u0/ADVENT.SUB
+++ b/Source/Images/d_cowgol/u0/ADVENT.SUB
@ -0,0 +1,2 @@
 COWGOL ADVENT.COW ADVMAIN.COW XRND.AS
--- a/Source/Images/d_cowgol/u0/ADVENT1.TXT
+++ b/Source/Images/d_cowgol/u0/ADVENT1.TXT
@ -0,0 +1,497 @@
 #1
 You are standing at the end of a road before a small brick
 building.  Around you is a forest.  A small stream flows out
 of the building and down a gully.
 #2
 You have walked up a hill, still in the forest.  The road
 slopes back down the other side of the hill.  There is a
 building in the distance.
 #3
 You are inside a building, a well house for a large spring.
 #4
 You are in a valley in the forest beside a stream tumbling
 along a rocky bed.
 #5
 You are in open forest, with a deep valley to one side.
 #6
 You are in open forest near both a valley and a road.
 #7
 At your feet all the water of the stream splashes into a
 2-inch slit in the rock.  Downstream the streambed is bare rock.
 #8
 You are in a 20-foot depression floored with bare dirt.  Set
 into the dirt is a strong steel grate mounted in concrete.
 A dry streambed leads into the depression.
 #9
 You are in a small chamber beneath a 3x3 steel grate to the
 surface.  A low crawl over cobbles leads inward to the West.
 #10
 You are crawling over cobbles in a low passage.  There is a
 dim light at the east end of the passage.
 #11
 You are in a debris room filled with stuff washed in from the
 surface.  A low wide passage with cobbles becomes plugged
 with mud and debris here, but an awkward canyon leads
 upward and west.  A note on the wall says:
       Magic Word "XYZZY"
 #12
 You are in an awkward sloping east/west canyon.
 #13
 You are in a splendid chamber thirty feet high.  The walls
 are frozen rivers of orange stone.  An awkward canyon and a
 good passage exit from east and west sides of the chamber.
 #14
 At your feet is a small pit breathing traces of white mist.
 An east passage ends here except for a small crack leading
 on.
 #15
 You are at one end of a vast hall stretching forward out of
 sight to the west.  There are openings to either side.
 Nearby, a wide stone staircase leads downward.  The hall
 is filled with wisps of white mist swaying to and fro
 almost as if alive.  A cold wind blows up the staircase.
 There is a passage at the top of a dome behind you.
 #16
 The crack is far too small for you to follow.
 #17
 You are on the east bank of a fissure slicing clear across
 the hall.  The mist is quite thick here, and the fissure
 is too wide to jump.
 #18
 This is a low room with a crude note on the wall.  The
 note says:
       You won't get it up the steps.
 #19
 You are in the hall of the mountain king, with passages
 off in all directions.
 #20
 You are at the bottom of the pit with a broken neck.
 #21
 You didn't make it.
 #22
 The dome is unclimbable.
 #23
 You are at the west end of the twopit room.  There is a
 large hole in the wall above the pit at this end of the
 room.
 #24
 You are that the bottom of the eastern pit in the twopit
 room.  There is a small pool of oil in one corner of the
 pit.
 #25
 You are at the bottom of the western pit in the towpit room.
 There is a large hole in the wall about 25 feet above you.
 #26
 You clamber up the plant and scurry through the hole at the
 top.
 #27
 You are on the west side of the fissure in the hall of mists.
 #28
 You are in a low N/S passage at a hole in the floor.  The
 hole goes down to an E/W passage.
 #29
 You are in the south side chamber.
 #30
 You are in the west side chamber of the hall of the
 mountain king.  A passage continues west and up here.
 #31
 >$<
 #32
 You can't get by the snake.
 #33
 You are in a large room, with a passage to the south,
 a passage to the west, and a wall of broken rock to the
 east.  There is a large "Y2" on a rock in the room's 
 center.
 #34
 You are in a jumble of rock, with cracks everywhere.
 #35
 You're at a low window overlooking a huge pit, which
 extends up out of sight.  A floor is indistinctly visible
 over 50 feet below.  Traces of white mist cover the floor
 of the pit, becoming thicker to the right.  Marks in the
 dust around the window would seem to indicate that
 someone has been here recently.  Directly across the pit
 from you and 25 feet away there is a similar window
 looking into a lighted room.  A shadowy figure can
 be seen there peering back at you.
 #36
 You are in a dirty broken passage.  To the east is a
 crawl.  To the west is a large passage.  Above you is
 another passage.
 #37
 You are on the brink of a small clean climbable pit.  A
 crawl leads west.
 #38
 You are in the bottom of a small pit with a little stream,
 which enters and exits through tiny slits.
 #39
 You are in a large room full of dusty rocks.  There is a
 big hole in the floor.  There are cracks everywhere, and
 a passage leading east.
 #40
 You have crawled through a very low wide passage parallel
 to and north of the hall of mists.
 #41
 You are at the west end of hall of mists.  A low wide crawl
 continues west and another goes north.  To the south is a
 little passage 6 feet off the floor.
 #42
 You are in a maze of twisty little passages, all alike.
 #43
 You are in a maze of twisty little passages, all alike.
 #44
 You are in a maze of twisty little passages, all alike.
 #45
 You are in a maze of twisty little passages, all alike.
 #46
 Dead end
 #47
 Dead end
 #48
 Dead end
 #49
 You are in a maze of twisty little passages, all alike.
 #50
 You are in a maze of twisty little passages, all alike.
 #51
 You are in a maze of twisty little passages, all alike.
 #52
 You are in a maze of twisty little passages, all alike.
 #53
 You are in a maze of twisty little passages, all alike.
 #54
 Dead end
 #55
 You are in a maze of twisty little passages, all alike.
 #56
 Dead end
 #57
 You are on the brink of a thirty foot pit with a massive
 orange column down one wall.  You could climb down here but
 you could not get back up.  The maze continues at this level.
 #58
 Dead end
 #59
 You have crawled through a very low wide passage paralled
 to and north of the hall of mists.
 #60
 You are at the east end of a very long hall apparently
 without side chambers.  To the east a low wide crawl
 slants up.  To the north a round two foot hole slants
 down.
 #61
 You are at the west end of a very long featureless hall.
 The hall joins up with a narrow north/south passage.
 #62
 You are at a crossover of a high N/S passage and a low
 E/W one.
 #63
 Dead end
 #64
 You are at a complex junction.  A low hands and knees passage
 from the north joins a higher crawl from the east to make
 a walking passage going west.  There is also a large room
 above.  The air is damp here.
 #65
 You are in bedquilt, a long east/west passage with holes
 everywhere.  To explore at random select north, south, up
 or down.
 #66
 You are in a room whose walls resemble swiss cheese.  
 Obvious passages go west, east, ne, and nw.  Part of the
 room is occupied by a large bedrock block.
 #67
 You are at the east end of the twopit room.  The floor
 here is littered with thin rock slabs, which make it easy
 to descend the pits.  There is a path here bypassing
 the pits to connect passages from east and west.
 There are holes all over, but the only bit one is on
 the wall directly over the west pit where you can't
 get at it.
 #68
 You are in a large low circular chamber whose floor is
 an immense slab fallen from the ceiling (slab room).
 East and west there once were large passages, but they
 are now filled with boulders.  Low small passages go
 north and south, and the south one quickly bends west
 around the boulders.
 #69
 You are in a secret N/S canyon above a large room.
 #70
 You are in a secret N/S canyon above a sizable passage.
 #71
 You are in a secret canyon at a junction of three canyons,
 bearing north, south and se.  The north one is as tall as
 the other two combined.
 #72
 You are in a large low room.  Crawls lead north, se, and sw.
 #73
 Dead end crawl.
 #74
 You are in a secret canyon which here runs E/W.  It crosses
 over a very tight canyon 15 feet below.  If you go down you
 may not be able to get back up.
 #75
 You are at a wide place in a very tight N/S canyon.
 #76
 The canyon here becomes too tight to go further south.
 #77
 You are in a tall E/W canyon.  A low tight crawl goes 3
 feet north and seems to open up.
 #78
 The canyon runs into a mass of boulders -- dead end.
 #79
 The stream flows out through a pair of 1 foot diameter
 sewer pipes.  It would be advisable to use the exit.
 #80
 You are in a maze of twisty little passages, all alike.
 #81
 Dead end.
 #82
 Dead end.
 #83
 You are in a maze of twisty little passages, all alike.
 #84
 You are in a maze of twisty little passages, all alike.
 #85
 Dead end.
 #86
 Dead end.
 #87
 You are in a maze of twisty little passages, all alike.
 #88
 You are in a long, narrow corridor stretching out of sight
 to the west.  At the eastern end is a hole through which
 you can see a profusion of leaves,
 #89
 There is nothing here to climb.  Use "up" or "out" to leave
 the pit.
 #90
 You have climbed up the plant and out of the pit.
 #91
 You are at the top of a steep incline above a large room.
 You could climb down here, but you would not be able to
 climb up.  There is a passage leading back to the north.
 #92
 You are in the giant room.  The ceiling is too high up
 for your lamp to show it.  Cavernous passages lead east,
 north, and south.  On the west wall is scrawled the
 inscription:
              "Fee Fie Foe Foo"       {sic}
 #93
 The passage here is blocked by a recent cave-in.
 #94
 You are at one end of an immense north/south passage.
 #95
 You are in a magnificent cavern with a rushing stream,
 which cascades over a sparkling waterfall into a
 roaring whirlpool which disappears through a hole in
 the floor.  Passages exit to the south and west.
 #96
 You are in the soft room.  The walls are covered with
 heavy curtains, the floor with a thick pile carpet.
 Moss covers the ceiling.
 #97
 This is the oriental room.  Ancient oriental cave drawings
 cover the walls.  A gently sloping passage leads upward
 to the north, another passage leads se, and a hands and
 knees crawl leads west.
 #98
 You are following a wide path around the outer edge of a
 large cavern.  Far below, through a heavy white mist,
 strange splashing noises can be heard.  The mist rises up
 through a fissure in the ceiling.  The path exits to the
 south and west.
 #99
 You are in an alcove.  A small nw path seems to widen
 after a short distance.  An extremely tight tunnel leads
 east.  It looks like a very tight squeeze.  An eerie
 light can be seen at the other end.
 #100
 You're in a small chamber lit by an eerie green light.  An
 extremely narrow tunnel exits to the west.  A dark corridor
 leads ne.
 #101
 You're in the dark-room.  A corridor leading south is the
 only exit.
 #102
 You are in an arched hall.  A coral passage once continued
 up and east from here, but is now blocked by debris.  The
 air smells of sea water.
 #103
 You're in a large room carved out of sedimentary rock.
 The floor and walls are littered with bits of shells
 imbedded in the stone.  A shallow passage proceeds
 downward, and a somewhat steeper one leads up.  A low
 hands and knees passage enters from the south.
 #104
 You are in a long sloping corridor with ragged sharp walls.
 #105
 You are in a cul-de-sac about eight feet across.
 #106
 You are in an anteroom leading to a large passage to the
 east.  Small passages go west and up.  The remnants of
 recent digging are evident.  A sign in midair here says:
       "Cave under construction beyond this point."
              "Proceed at your own risk."
             "Witt construction company"
 #107
 You are in a maze of twisty little passages, all different.
 #108
 You are at Witt's end.  Passages lead off in ALL directions.
 #109
 You are in a north/south canyon about 25 feet across.  The
 floor is covered by white mist seeping in from the north.
 The walls extend upward for well over 100 feet.  Suspended
 from some unseen point far above you, an enormous two-
 sided mirror is hanging paralled to and midway between
 the canyon walls.  (The mirror is obviously provided
 for the use of the dwarves, who as you know, are
 extremely vain.)  A small window can be seen in either
 wall, some fifty feet up.
 #110
 You're at a low window overlooking a huge pit, which
 extends up out of sight.  A floor is indistinctly visible
 over 50 feet below.  Traces of white mist cover the floor
 of the pit, becoming thicker to the left.  Marks in the
 dust around the window would seem to indicate that
 someone has been here recently.  Directly across the pit
 from you and 25 feet away there is a similar window
 looking into a lighted room.  A shadowy figure can be seen
 there peering back at you.
 #111
 A large stalactite extends from the roof and almost reaches
 the floor below.  You could climb down it, and jump from
 it to the floor, but having done so you would be unable to
 reach it to climb back up.
 #112
 You are in a little maze of twisting passages, all different.
 #113
 You are at the edge of a large underground reservoir.  An
 opaque cloud of white mist fills the room and rises
 rapidly upward.  The lake is fed by a stream which tumbles
 out of a hole in the wall about 10 feet overhead and
 splashes noisily into the water somewhere within the mist.
 The only passage goes back toward the south.
 #114
 Dead end.
 #115
 You are at the northeast end of an immense room, even
 larger than the giant room.  It appears to be a repository
 for the "adventure" program.  Massive torches far overhead
 bathe the room with smoky yellow light.  Scattered about
 you can be seen a pile of bottles (all of them empty), a
 nursery of young beanstalks murmuring quietly, a bed of
 oysters, a bundle of black rods with rusty stars on their
 ends, and a collection of brass lanterns.  Off to one side
 a great many Dwarves are sleeping on the floor, snoring
 loudly.  A sign nearby reads:
        "Do NOT disturb the Dwarves!"
 An immense mirror is hanging against one wall, and
 stretches to the other end of the room, where various
 other sundry objects can be glimpsed dimly in the distance.
 #116
 You are at the southwest end of the repository.  To one
 side is a pit full of fierce green snakes.  On the other
 side is a row of small wicker cages, each of which contains
 a little sulking bird.  In one corner is a bundle of
 black rods with rusty marks on their ends.  A large
 number of velvet pillows are scattered about on the floor.
 A vast mirror stretches off to the northeast.  At your
 feet is a large steel grate, next to which is a sign
 which reads:
     "Treasure vault.  Keys in main office."
 #117
 You are on one side of a large deep chasm.  A heavy white
 mist rising up from below obscures all view of the far
 side.  A sw path leads away from the chasm into a winding
 corridor.
 #118
 You are in a long winding corridor sloping out of sight
 in both directions.
 #119
 You are in a secret canyon which exits to the north and east.
 #120
 You are in a secret canyon which exits to the north and east.
 #121
 You are in a secret canyon which exits to the north and east.
 #122
 You are on the far side of the chasm.  A ne path leads away
 from the chasm on this side.
 #123
 You're in a long east/west corridor.  A faint rumbling noise
 can be heard in the distance.
 #124
 The path forks here.  The left fork leads northeast.  A dull
 rumbling seems to get louder in that direction.  The right
 fork leads southeast down a gentle slope.  The main
 corridor enters from the west.
 #125
 The walls are quite warm here.  From the north can be heard
 a steady roar, so loud that the entire cave seems to be
 trembling.  Another passage leads south, and a low crawl
 goes east.
 #126
 You are on the edge of a breath-taking view.  Far below
 you is an active volcano, from which great gouts of molten
 lava come surging out, cascading back down into the depths.
 The glowing rock fills the farthest reaches of the cavern
 with a blood-red glare, giving everything an eerie,
 macabre appearance.  The air is filled with flickering
 sparks of ash and a heavy smell of brimstone.  The walls
 are hot to the touch, and the thundering of the volcano
 drowns out all other sounds.  Embedded in the jagged roof
 far overhead are myriad formations composed of pure
 white alabaster, which scatter their murky light into
 sinister apparitions upon the walls.  To one side is a
 deep gorge, filled with a bizarre chaos of tortured
 rock which seems to have been crafted by the Devil
 Himself.  An immense river of fire crashes out from
 the depths of the volcano, burns its way through the
 gorge, and plummets into a bottomless pit far off to your
 left.  To the right, an immense geyser of blistering
 steam erupts continuously from a barren island in the
 center of a sulfurous lake, which bubbles ominously.
 The far right wall is aflame with an incandescence of its
 own, which lends an additional infernal splendor to the
 already hellish scene.  A dark, foreboding passage exits
 to the south.
 #127
 You are in a small chamber filled with large boulders.
 The walls are very warm, causing the air in the room
 to be almost stifling from the heat.  The only exit
 is a crawl heading west, through which is coming
 a low rumbling.
 #128
 You are walking along a gently sloping north/south passage
 lined with oddly shaped limestone formations.
 #129
 You are standing at the entrance to a large, barren
 room.  A sign posted above the entrance reads:
       "Caution!  Bear in room!"
 #130
 You are inside a barren room.  The center of the room
 is completely empty except for some dust.  Marks in
 the dust lead away toward the far end of the room.
 The only exit is the way you came in.
 #131
 You are in a maze of twisting little passages, all different.
 #132
 You are in a little maze of twisty passages, all different.
 #133
 You are in a twisting maze of little passages, all different.
 #134
 You are in a twisting little maze of passages, all different.
 #135
 You are in a twisty little maze of passages, all different.
 #136
 You are in a twisty maze of little passages, all different.
 #137
 You are in a little twisty maze of passages, all different.
 #138
 You are in a maze of little twisting passages, all different.
 #139
 You are in a maze of little twisty passages, all different.
 #140
 Dead end.
--- a/Source/Images/d_cowgol/u0/ADVENT2.TXT
+++ b/Source/Images/d_cowgol/u0/ADVENT2.TXT
@ -0,0 +1,293 @@
 #1
 You're at end of road again.
 #2
 You're at hill in road.
 #3
 You're inside building.
 #4
 You're in valley.
 #5
 You're in forest.
 #6
 You're in forest.
 #7
 You're at slit in streambed.
 #8
 You're outside grate.
 #9
 You're below the grate.
 #10
 You're in cobble crawl.
 #11
 You're in debris room.
 #12
 You are in an awkward sloping east/west canyon.
 #13
 You're in bird chamber.
 #14
 You're at top of small pit.
 #15
 You're in hall of mists.
 #16
 The crack is far too small for you to follow.
 #17
 You're on east bank of fissure.
 #18
 You're in nugget of gold room.
 #19
 You're in hall of mt. king.
 #20
 You are the the bottom of the pit with a broken neck.
 #21
 You didn't make it.
 #22
 The dome is unclimbable.
 #23
 You're at west end of twopit room.
 #24
 You're in east pit.
 #25
 You're in west pit.
 #26
 You clamber up the plant and scurry through the hole at the
 top.
 #27
 You are on the west side of the fissure in the hall of mists.
 #28
 You are in a low N/S passage at a hole in the floor.  The
 hole goes down to an E/W passage.
 #29
 You are in the south side chamber.
 #30
 You are in the west side chamber of the hall of the
 mountain king.  A passage continues west and up here.
 #31
 >$<
 #32
 You can't get by the snake.
 #33
 You're at "Y2".
 #34
 You are in a jumble of rock, with cracks everywhere.
 #35
 You're at window on pit.
 #36
 You're in dirty passage.
 #37
 You are on the brink of a small clean climbable pit.  A
 crawl leads west.
 #38
 You are in the bottom of a small pit with a little stream,
 which enters and exits through tiny slits.
 #39
 You're in dusty rock room.
 #40
 You have crawled through a very low wide passage parallel
 to and north of the hall of mists.
 #41
 You're at west end of hall of mists.
 #42
 You are in a maze of twisty little passages, all alike.
 #43
 You are in a maze of twisty little passages, all alike.
 #44
 You are in a maze of twisty little passages, all alike.
 #45
 You are in a maze of twisty little passages, all alike.
 #46
 Dead end.
 #47
 Dead end.
 #48
 Dead end.
 #49
 You are in a maze of twisty little passages, all alike.
 #50
 You are in a maze of twisty little passages, all alike.
 #51
 You are in a maze of twisty little passages, all alike.
 #52
 You are in a maze of twisty little passages, all alike.
 #53
 You are in a maze of twisty little passages, all alike.
 #54
 Dead end.
 #55
 You are in a maze of twisty little passages, all alike.
 #56
 Dead end.
 #57
 You're at brink of pit.
 #58
 Dead end.
 #59
 You have crawled through a very low wide passage paralled
 to and north of the hall of mists.
 #60
 You're at east end of long hall.
 #61
 You're at west end of long hall.
 #62
 You are at a crossover of a high N/S passage and a low
 E/W one.
 #63
 Dead end.
 #64
 You're at complex junction.
 #65
 You are in bedquilt, a long east/west passage with holes
 everywhere.  To explore at random select north, south, up
 or down.
 #66
 You're in swiss cheese room.
 #67
 You're at east end of twopit room.
 #68
 You're in slab room.
 #69
 You are in a secret N/S canyon above a large room.
 #70
 You are in a secret N/S canyon above a sizable passage.
 #71
 You're at junction of three secret canyons.
 #72
 You are in a large low room.  Crawls lead north, se, and sw.
 #73
 Dead end crawl.
 #74
 You're at secret E/W canyon above tight canyon.
 #75
 You are at a wide place in a very tight N/S canyon.
 #76
 The canyon here becomes too tight to go further south.
 #77
 You are in a tall E/W canyon.  A low tight crawl goes 3
 feet north and seems to open up.
 #78
 The canyon runs into a mass of boulders -- dead end.
 #79
 The stream flows out through a pair of 1 foot diameter
 sewer pipes.  It would be advisable to use the exit.
 #80
 You are in a maze of twisty little passages, all alike.
 #81
 Dead end.
 #82
 Dead end.
 #83
 You are in a maze of twisty little passages, all alike.
 #84
 You are in a maze of twisty little passages, all alike.
 #85
 Dead end.
 #86
 Dead end.
 #87
 You are in a maze of twisty little passages, all alike.
 #88
 You're in narrow corridor.
 #89
 There is nothing here to climb.  Use "up" or "out" to leave
 the pit.
 #90
 You have climbed up the plant and out of the pit.
 #91
 You're at steep incline above large room.
 #92
 You're in giant room.
 #93
 The passage here is blocked by a recent cave-in.
 #94
 You are at one end of an immense north/south passage.
 #95
 You're in cavern with waterfall.
 #96
 You're in soft room.
 #97
 You're in oriental room.
 #98
 You're in misty cavern.
 #99
 You're in alcove.
 #100
 You're in plover room.
 #101
 You're in dark-room.
 #102
 You're in arched hall.
 #103
 You're in shell room.
 #104
 You are in a long sloping corridor with ragged sharp walls.
 #105
 You are in a cul-de-sac about eight feet across.
 #106
 You're in anteroom.
 #107
 You are in a maze of twisty little passages, all different.
 #108
 You're at Witt's end.
 #109
 You're in mirror canyon.
 #110
 You're at window on pit.
 #111
 You're at top of stalactite.
 #112
 You are in a little maze of twisting passages, all different.
 #113
 You're at reservoir.
 #114
 Dead end.
 #115
 You're at ne end of repository.
 #116
 You're at sw end of repository.
 #117
 You're on sw side of chasm.
 #118
 You're in sloping corridor.
 #119
 You are in a secret canyon which exits to the north and east.
 #120
 You are in a secret canyon which exits to the north and east.
 #121
 You are in a secret canyon which exits to the north and east.
 #122
 You're on ne side of chasm.
 #123
 You're in corridor.
 #124
 You're at fork in path.
 #125
 You're at junction with warm walls.
 #126
 You're at breath-taking view.
 #127
 You're in chamber of boulders.
 #128
 You're in limestone passage.
 #129
 You're in front of barren room.
 #130
 You're in barren room.
 #131
 You are in a maze of twisting little passages, all different.
 #132
 You are in a little maze of twisty passages, all different.
 #133
 You are in a twisting maze of little passages, all different.
 #134
 You are in a twisting little maze of passages, all different.
 #135
 You are in a twisty little maze of passages, all different.
 #136
 You are in a twisty maze of little passages, all different.
 #137
 You are in a little twisty maze of passages, all different.
 #138
 You are in a maze of little twisting passages, all different.
 #139
 You are in a maze of little twisty passages, all different.
 #140
 Dead end.
--- a/Source/Images/d_cowgol/u0/ADVENT3.TXT
+++ b/Source/Images/d_cowgol/u0/ADVENT3.TXT
@ -0,0 +1,269 @@
 #1
 /Set of keys.
 /There are some keys on the ground here.
 /
 #2
 /Brass lantern
 /There is a shiny brass lamp nearby.
 /There is a lamp shining nearby.
 /
 #3
 /*Grate
 /The grate is locked.
 /The grate is open.
 /
 #4
 /Wicker cage
 /There is a small wicker cage discarded nearby.
 /
 #5
 /Black rod
 /A three foot black rod with a rusty star on an end lies nearby.
 /
 #6
 /Black rod
 /A three foot black rod with a rusty mark on an end lies nearby.
 /
 #7
 /*Steps
 /Rough stone steps lead down the pit.
 /Rough stone steps lead up the dome.
 /
 #8
 /Little bird in cage
 /A cheerful little bird is sitting here singing.
 /There is a little bird in the cage.
 /
 #9
 /*Rusty door
 /The way north is barred by a massive, rusty, iron door.
 /The way north leads through a massive, rusty, iron door.
 /
 #10
 /Velvet pillow
 /A small velvet pillow lies on the floor.
 /
 #11
 /*Snake
 /A huge green fierce snake bars the way!
 //
 #12
 /*Fissure
 //A crystal bridge now spans the fissure.
 /The crystal bridge has vanished!
 /
 #13
 /*Stone tablet
 /A massive stone tablet imbedded in the wall reads:
 "Congratulations on bringing light into the dark-room!"
 /
 #14
 /Giant clam >Grunt!<
 /There is an enormous clam here with its shell tightly closed.
 /
 #15
 /Giant oyster >Groan!<
 /There is an enormous oyster here with its shell tightly closed.
 /Interesting.  There seems to be something written on the
 underside of the oyster.
 /
 #16
 /"Spelunker Today"
 /There are a few recent issues of "Spelunker Today" magazine
 here.
 /
 #17
 #18
 #19
 /Tasty food
 /There is tasty food here.
 /
 #20
 /Small bottle
 /There is a bottle of water here.
 /There is an empty bottle here.
 /There is a bottle of oil here.
 /
 #21
 /Water in the bottle.
 /
 #22
 /Oil in the bottle
 /
 #23
 /*Mirror
 //
 #24
 /*Plant
 /There is a tiny little plant in the pit, murmuring
 "Water, Water, ..."
 /The plant spurts into furious growth for a few seconds.
 /There is a 12-foot-tall beanstalk stretching up out of
 the pit, bellowing "Water!! Water!!"
 /The plant grows explosively, almost filling the bottom
 of the pit. 
 /There is a gigantic beanstalk stretching all the way
 up to the hole.
 /You've over-watered the plant!  It's shriveling up!
 It's, It's...
 /
 #25
 /*Phony plant
 /
 /The top of a 12-foot-tall beanstalk is poking up out of
 the west pit.
 /There is a huge beanstalk growing out of the west pit up to
 the hole.
 /
 #26
 /*Stalactite
 //
 #27
 /*Shadowy figure
 /The shadowy figure seems to be trying to attract your attention.
 /
 #28
 /Dwarf's axe
 /There is a little axe here.
 /There is a little axe lying beside the bear.
 /
 #29
 /*Cave drawings
 //
 #30
 /*Pirate
 //
 #31
 /*Dragon
 /A huge green fierce dragon bars the way!
 /Congratulations!  You have just vanquished a dragon with
 your bare hands!  (Unbelievable, Isn't it?)
 /The body of a huge green dead dragon is lying off to one
 side.
 /
 #32
 /*Chasm
 /A rickety wooden bridge extends across the chasm, vanishing
 into the mist.  A sign posted on the bridge reads:
          "Stop!  Pay Troll!"
 /The wreckage of a bridge (and a dead bear) can be seen
 at the bottom of the chasm.
 /
 #33
 /*Troll
 /A burly troll stands by the bridge and insists you throw
 him a treasure before you may cross.
 /The troll steps out from beneath the bridge and blocks
 your way.
 //
 #34
 /*Phony troll
 /The troll is nowhere to be seen.
 /
 #35
 //There is a ferocious cave bear eyeing you from the far
 end of the room!
 /There is a gentle cave bear sitting placidly in one corner.
 /There is a contented-looking bear wandering about nearby.
 //
 #36
 /*Message in second maze
 /There is a message scrawled in the dust in a flowery script,
 reading:
           "This is not the maze where the"
           "pirate leaves his treasure chest"
 /
 #37
 /*Volcano and,or Geyser
 //
 #38
 /*Vending machine
 /There is a massive vending machine here.  The instructions
 on it read:
     "Drop coins here to receive fresh batteries."
 /
 #39
 /Batteries
 /There are fresh batteries here.
 /Some worn-out batteries have been discarded nearby.
 /
 #40
 /*Carpet and,or moss
 //
 #41
 #42
 #43
 #44
 #45
 #46
 #47
 #48
 #49
 #50
 /Large gold nugget
 /There is a large sparkling nugget of gold here!
 /
 #51
 /Several diamonds
 /There are diamonds here!
 /
 #52
 /Bars of silver
 /There are bars of silver here!
 /
 #53
 /Precious jewelry
 /There is precious jewelry here!
 /
 #54
 /Rare coins
 /There are many coins here!
 /
 #55
 /Treasure chest
 /The pirate's treasure chest is here!
 /
 #56
 /Golden eggs
 /There is a large nest here, full of golden eggs!
 /The nest of golden eggs has vanished!
 /Done!
 /
 #57
 /Jeweled trident
 /There is a jewel-encrusted trident here!
 /
 #58
 /Ming vase
 /There is a delicate, precious, ming vase here!
 /The vase is now resting, delicately, on a velvet pillow.
 /The floor is littered with worthless shards of pottery.
 /The ming vase drops with a delicate crash.
 /
 #59
 /Egg-sized emerald
 /There is an emerald here the size of a plover's egg!
 /
 #60
 /Platinum pyramid
 /There is a platinum pyramid here, 8 inches on a side!
 /
 #61
 /Glistening pearl
 /Off to one side lies a glistening pearl!
 /
 #62
 /Persian rug
 /There is a persian rug spread out on the floor!
 /The dragon is sprawled out on a persian rug!!
 /
 #63
 /Rare spices
 /There are rare spices here!
 /
 #64
 /Golden chain
 /There is a golden chain lying in a heap on the floor!
 /The bear is locked to the wall with a golden chain!
 /There is a golden chain locked to the wall!
 /
--- a/Source/Images/d_cowgol/u0/ADVENT4.TXT
+++ b/Source/Images/d_cowgol/u0/ADVENT4.TXT
@ -0,0 +1,584 @@
 #1
 Somewhere nearby is Colossal Cave, where others have
 found fortunes in treasure and gold, though it is rumored
 that some who enter are never seen again.  Magic is said
 to work in the cave.  I will be your eyes and hands.  Direct
 me with commands of 1 or 2 words.  I should warn you that I
 look at only the first five letters of each word, so you'll
 have to enter "Northeast" as "ne" to distinguish it from
 "North".  (Should you get stuck, type "help" for some
 general hints).
 #2
 A little dwarf with a big knife blocks your way.
 #3
 A little dwarf just walked around a corner, saw you,
 threw a little axe at you which missed, cursed, and ran away.
 #4
 There is a threatening little dwarf in the room with you!
 #5
 One sharp, nasty knife is thrown at you!
 #6
 None of them hit you!
 #7
 One of them gets you!
 #8
 A hollow voice says "Plugh".
 #9
 There is no way to go that direction.
 #10
 I am unsure how you are facing.  Use compass points or
 nearby objects.
 #11
 I don't know in from out here.  Use compass points or name
 something in the general direction you want to go.
 #12
 I don't know how to apply that word here.
 #13
 I don't understand that!
 #14
 I'm game.  Would you care to explain how?
 #15
 Sorry, but I am not allowed to give more detail.  I will
 repeat the long description of your location.
 #16
 It is now pitch dark.  If you proceed you will likely fall
 into a pit.
 #17
 If you prefer, simply type W rather than West.
 #18
 Are you trying to catch the bird?
 #19
 The bird is frightened right now and you cannot catch
 it no matter what you try.  Perhaps you might try later.
 #20
 Are you trying to somehow deal with the snake?
 #21
 You can't kill the snake, or drive it away, or avoid it,
 or anything like that.  There is a way to get by, but you
 don't have the necessary resources right now.
 #22
 Do you really want to quit now?
 #23
 You fell into a pit and broke every bone in your body!
 #24
 You are already carrying it!
 #25
 You can't be serious!
 #26
 The bird was unafraid when you entered, but as you approach
 it becomes disturbed and you cannot catch it.
 #27
 You can catch the bird, but you cannot carry it.
 #28
 There is nothing here with a lock!
 #29
 You aren't carrying it!
 #30
 The little bird attacks the green snake, and in an
 astounding flurry drives the snake away.
 #31
 You have no keys!
 #32
 It has no lock.
 #33
 I don't know how to lock or unlock such a thing.
 #34
 It was already locked.
 #35
 The grate is now locked.
 #36
 The grate is now unlocked.
 #37
 It was already unlocked.
 #38
 You have no source of light.
 #39
 Your lamp is now on.
 #40
 Your lamp is now off.
 #41
 There is no way to get past the bear to unlock the chain,_
 which is probably just as well.
 #42
 Nothing happens.
 #43
 Where?
 #44
 There is nothing here to attack.
 #45
 The little bird is now dead.  Its body disappears.
 #46
 Attacking the snake both doesn't work and is very dangerous.
 #47
 You killed a little dwarf.
 #48
 You attack a little dwarf, but he dodges out of the way.
 #49
 With what? Your bare hands?
 #50
 Good try, but that is an old worn-out magic word.
 #51
 I know of places, actions, and things.  Most of my vocabulary
 describes places and is used to move you there.  To move, try
 words like forest, building, downstream, enter, east, west,
 north, south, up or down.  I know about a few special
 objects, like a black rod hidden in the cave.  These objects
 can be manipulated using some of the action words I know.
 Usually you will need to give both the object and action
 words (In either order), but sometimes I can infer the
 object from the verb alone.  Some objects also imply verbs;
 in particular, "inventory" implies "take inventory", which
 causes me to give you a list of what you're carrying.  The
 objects have side effects; for instance, the rod scares the
 bird.  Usually people having trouble moving just need
 to try a few more words.  Usually people trying unsuccessfully
 to manipulate an object are attempting something beyond their
 (or my!) capabilities and should try a completely different
 tack.  To speed the game you can sometimes move long distances
 with a single word.  For example, "building" usually gets you
 to the building from anywhere above ground except when lost
 in the forest.  Also, note that cave passages turn a lot, and
 that leaving a room to the north does not guarantee entering
 the next from the south.
 Good luck!
 #52
 It misses!
 #53
 It gets you!
 #54
 OK
 #55
 You can't unlock the keys.
 #56
 You have crawled around in some little holes and wound up
 back in the main passage.
 #57
 I don't know where the cave is, but hereabouts no stream
 can run on the surface for very long.  I would try the stream.
 #58
 I need more detailed instructions to do that.
 #59
 I can only tell you what you see as you move about and
 manipulate things.  I cannot tell you where remote things are.
 #60
 I don't know that word.
 #61
 What?
 #62
 Are you trying to get into the cave?
 #63
 The grate is very solid and has a hardened steel lock.  You
 cannot enter without a key, and there are no keys nearby.
 I would recommend looking elsewhere for the keys.
 #64
 The trees of the forest are large hardwood oak and maple,
 with an occasional grove of pine or spruce.  There is quite
 a bit of undergrowth, largely birch and ash saplings plus
 nondescript bushes of various sorts.  This time of year 
 visibility is quite restricted by all the leaves, but travel
 is quite easy if you detour around the spruce and berry
 bushes.
 #65
 		Welcome to ADVENTURE!
 		=====================
 	-Original development by Willie Crowther.
 	-Major features added by Don Woods.
 	-Conversion to BDS  C by J. R. Jaeger
 	-Unix standardization by Jerry D. Pohl.
 	-OS/2 Conversion by Martin Heller
 	-Conversion to TurboC 2.0 by Daimler
 	    Would you like instructions?
 #66
 Digging without a shovel is quite impractical.  Even with a
 shovel progress is unlikely.
 #67
 Blasting requires dynamite.
 #68
 I'm as confused as you are.
 #69
 Mist is a white vapor, usually water.  Seen from time to time
 in caverns.  It can be found anywhere but is frequently a
 sign of a deep pit leading down to water.
 #70
 Your feet are now wet.
 #71
 I think I just lost my appetite.
 #72
 Thank you.  It was delicious!
 #73
 You have taken a drink from the stream.  The water tastes
 strongly of minerals, but is not unpleasant.  It is extremely
 cold.
 #74
 The bottle of water is now empty.
 #75
 Rubbing the electric lamp is not particularly rewarding.
 Anyway, nothing exciting happens.
 #76
 Peculiar.  Nothing unexpected happens.
 #77
 Your bottle is empty and the ground is wet.
 #78
 You can't pour that.
 #79
 Watch it!
 #80
 Which way?
 #81
 Oh dear, you seem to have gotten yourself killed.  I might
 be able to help you out, but I've never really done this
 before.  Do you want me to try to reincarnate you?
 #82
 All right.  But don't blame me if something goes wr......
                    --- POOF !! ---
 You are engulfed in a cloud of orange smoke.  Coughing and
 gasping, you emerge from the smoke and find...
 #83
 You clumsy oaf, you've done it again!  I don't know how long
 I can keep this up.  Do you want me to try reincarnating
 you again?
 #84
 Okay, now where did i put my orange smoke? ... > POOF! <
 Everything disappears in a dense cloud of orange smoke.
 #85
 Now you've really done it!  I'm out of orange smoke!  You
 don't expect me to do a decent reincarnation without any
 orange smoke, do you?
 #86
 Okay, If you're so smart, do it yourself!  I'm leaving!
 #87
 Reserved
 #88
 Reserved
 #89
 Reserved
 #90
 Reserved
 #91
 Sorry, but I no longer seem to remember how it was you
 got here.
 #92
 You can't carry anything more.  You'll have to drop something
 first.
 #93
 You can't go through a locked steel grate!
 #94
 I believe what you want is right here with you.
 #95
 You don't fit through a two-inch slit!
 #96
 I respectfully suggest you go across the bridge instead
 of jumping.
 #97
 There is no way across the fissure.
 #98
 You're not carrying anything.
 #99
 You are currently holding the following:
 #100
 It's not hungry (It's merely pinin' for the Fjords).  Besides
 You have no bird seed.
 #101
 The snake has now devoured your bird.
 #102
 There's nothing here it wants to eat (Except perhaps you).
 #103
 You fool, Dwarves eat only coal!  Now you've made
 him REALLY mad !!
 #104
 You have nothing in which to carry it.
 #105
 Your bottle is already full.
 #106
 There is nothing here with which to fill the bottle.
 #107
 Your bottle is now full of water.
 #108
 Your bottle is now full of oil.
 #109
 You can't fill that.
 #110
 Don't be ridiculous!
 #111
 The door is extremely rusty and refuses to open.
 #112
 The plant indignantly shakes the oil off its leaves and asks:
 "Water?".
 #113
 The hinges are quite thoroughly rusted now and won't budge.
 #114
 The oil has freed up the hinges so that the door will now move,
 although it requires some effort.
 #115
 The plant has exceptionally deep roots and cannot be pulled free.
 #116
 The Dwarves' knives vanish as they strike the walls of the cave.
 #117
 Something you're carrying won't fit through the tunnel with
 you.  You'd best take inventory and drop something.
 #118
 You can't fit this five-foot clam through that little passage!
 #119
 You can't fit this five foot oyster through that little passage!
 #120
 I advise you to put down the clam before opening it. >STRAIN!<
 #121
 I advise you to put down the oyster before opening it.
 >WRENCH!<
 #122
 You don't have anything strong enough to open the clam.
 #123
 You don't have anything strong enough to open the oyster.
 #124
 A glistening pearl falls out of the clam and rolls away.
 Goodness, this must really be an oyster.  (I never was
 very good at identifying bivalves.)  Whatever it is,
 it has now snapped shut again.
 #125
 The oyster creaks open, revealing nothing but oyster inside.
 It promptly snaps shut again.
 #126
 You have crawled around in some little holes and found your
 way blocked by a recent cave-in.  You are now back in the
 main passage.
 #127
 There are faint rustling noises from the darkness behind
 you.
 #128
 Out from the shadows behind you pounces a bearded pirate!
 "Har, har" he chortles, "I'll just take all this booty and
 hide it away with me chest deep in the maze!".  He snatches
 your treasure and vanishes into the gloom.
 #129
 A sepulchral voice reverberating through the cave says:
 "Cave closing soon.  All adventurers exit immediately
 through main office."
 #130
 A mysterious recorded voice groans into life and announces:
 "This exit is closed.  Please leave via main office."
 #131
 It looks as though you're dead.  Well, seeing as how it's so
 close to closing time anyway, I think we'll just call it a day.
 #132
 The sepulchral voice entones, "The cave is now closed."  As
 the echoes fade, there is a blinding flash of light (and a
 small puff of orange smoke). . . . 
 As your eyes refocus you look around and find...
 #133
 There is a loud explosion, and a twenty-foot hole appears in
 the far wall, burying the Dwarves in the rubble.  You march
 through the hole and find yourself in the main office, where
 a cheering band of friendly elves carry the conquering
 adventurer off into the sunset.
 #134
 There is a loud explosion, and a twenty-foot hole appears in
 the far wall, burying the snakes in the rubble.  A river of
 molten lava pours in through the hole, destroying
 everything in its path, including you!!
 #135
 There is a loud explosion, and you are suddenly splashed across
 the walls of the room.
 #136
 The resulting ruckus has awakened the Dwarves.  There are now
 several threatening little Dwarves in the room with you!
 Most of them throw knives at you!  All of them get you!
 #137
 Oh, leave the poor unhappy bird alone.
 #138
 I daresay whatever you want is around here somewhere.
 #139
 I don't know the word "stop".   Use "quit" if you want to
 give up.
 #140
 You can't get there from here.
 #141
 You are being followed by a very large, tame bear.
 #142
 If you want to end your adventure early, say "quit".  To
 suspend you adventure such that you can continue later
 say "suspend" (or "pause" or "save").  To see how well
 you're doing, say "score".  To get full credit for a
 treasure, you must have left it safely in the building,
 though you get partial credit just for locating it.
 You lose points for getting killed, or for quitting,
 though the former costs you more.  There are also points
 based on how much (If any) of the cave you've managed to
 explore;  in particular, there is a large bonus just for
 getting in (to distinguish the beginners from the rest of
 the pack), and there are other ways to determine whether
 you've been through some of the more harrowing sections.
 If you think you've found all the treasures, just keep
 exploring for a while.  If nothing interesting happens, you
 haven't found them all yet.  If something interesting DOES
 happen, it means you're getting a bonus and have an
 opportunity to garner many more points in the master's
 section.  I may occasionally offer hints in you seem to
 be having trouble.  If I do, I'll warn you in
 advance how much it will affect your score to accept the
 hints.  Finally, to save paper, you may specify "brief",
 which tells me never to repeat the full description of a place
 unless you explicitly ask me to.
 #143
 Do you indeed wish to quit now?
 #144
 There is nothing here with which to fill the vase.
 #145
 The sudden change in temperature has delicately shattered
 the vase.
 #146
 It is beyond your power to do that.
 #147
 I don't know how.
 #148
 It is too far up for you to reach.
 #149
 You killed a little Dwarf.  The body vanished in a cloud
 of greasy black smoke.
 #150
 The shell is very strong and impervious to attack.
 #151
 What's the matter, can't you read?  Now you'd best start
 over.
 #152
 The axe bounces harmlessly off the dragon's thick scales.
 #153
 The dragon looks rather nasty.  You'd best not try to get by.
 #154
 The little bird attacks the green dragon, and in an
 astounding flurry gets burnt to a cinder.  The ashes blow away.
 #155
 On what?
 #156
 Okay, from now on I'll only describe a place in full the
 first time you come to it.  To get the full description
 say "look".
 #157
 Trolls are close relatives with the rocks and have skin as
 tough as that of a rhinoceros.  The troll fends off your
 blows effortlessly.
 #158
 The troll deftly catches the axe, examines it carefully,
 and tosses it back, declaring, "Good workmanship,
 but it's not valuable enough.".
 #159
 The troll catches your treasure and scurries away out of sight.
 #160
 The troll refuses to let you cross.
 #161
 There is no longer any way across the chasm.
 #162
 Just as you reach the other side, the bridge buckles beneath
 the weight of the bear, which was still following you around.
 You scrabble desperately for support, but as the bridge 
 collapses you stumble back and fall into the chasm.
 #163
 The bear lumbers toward the troll, who lets out a
 startled shriek and scurries away.  The bear soon gives
 up pursuit and wanders back.
 #164
 The axe misses and lands near the bear where you can't get
 at it.
 #165
 With what?  Your bare hands?  Agains HIS bear hands??
 #166
 The bear is confused;  he only wants to be your friend.
 #167
 For crying out loud, the poor thing is already dead!
 #168
 The bear eagerly wolfs down your food, after which he seems
 to calm down considerably, and even becomes rather friendly.
 #169
 The bear is still chained to the wall.
 #170
 The chain is still locked.
 #171
 The chain is now unlocked.
 #172
 The chain is now locked.
 #173
 There is nothing here to which the chain can be locked.
 #174
 There is nothing here to eat.
 #175
 Do you want the hint?
 #176
 Do you need help getting out of the maze?
 #177
 You can make the passages look less alike by dropping things.
 #178
 Are you trying to explore beyond the plover room?
 #179
 There is a way to explore that region without having to
 worry about falling into a pit.  None of the objects
 available is immediately useful in descovering the secret.
 #180
 Do you need help getting out of here?
 #181
 Don't go west.
 #182
 Gluttony is not one of the Troll's vices.  Avarice, however, is.
 #183
 Your lamp is getting dim.. You'd best start wrapping this up,
 unless you can find some fresh batteries.  I seem to recall
 there's a vending machine in the maze.  Bring some coins
 with you.
 #184
 Your lamp has run out of power.
 #185
 There's not much point in wandering around out here, and you
 can't explore the cave without a lamp.  So let's just call
 it a day.
 #186
 There are faint rustling noises from the darkness behind you.
 As you turn toward them, the beam of your lamp falls across a
 bearded pirate.  He is carrying a large chest.  "Shiver me
 timbers!"  he cries, "I've been spotted!  I'd best hide
 meself off to the maze and hide me chest!".  With that,
 he vanished into the gloom.
 #187
 Your lamp is getting dim.  You'd best go back for
 those batteries.
 #188
 Your lamp is getting dim.. I'm taking the liberty of replacing
 the batteries.
 #189
 Your lamp is getting dim, and you're out of spare batteries.
 You'd best start wrapping this up.
 #190
 I'm afraid the magazine is written in Dwarvish.
 #191
 "This is not the maze where the pirate leaves his treasure
 chest."
 #192
 Hmm, this looks like a clue, which means it'll cost you 10
 points to read it.  Should I go ahead and read it anyway?
 #193
 It says, "There is something strange about this place,
 such that one of the words I've always known now has
 a new effect."
 #194
 It says the same thing it did before.
 #195
 I'm afraid I don't understand.
 #196
 "Congratulations on bringing light into the dark-room!"
 #197
 You strike the mirror a resounding blow, whereupon it
 shatters into a myriad tiny fragments.
 #198
 You have taken the vase and hurled it delicately to the
 ground.
 #199
 You prod the nearest Dwarf, who wakes up grumpily, takes
 one look at you, curses, and grabs for his axe.
 #200
 Is this acceptable?
 #201
 There's no point in suspending a demonstration game.
--- a/Source/Images/d_cowgol/u0/ADVMAIN.COW
+++ b/Source/Images/d_cowgol/u0/ADVMAIN.COW
--- a/Source/Images/d_cowgol/u0/COWFIX.COM
+++ b/Source/Images/d_cowgol/u0/COWFIX.COM
--- a/Source/Images/d_cowgol/u0/XRND.AS
+++ b/Source/Images/d_cowgol/u0/XRND.AS
@ -0,0 +1,53 @@
 ; Xorshift is a class of pseudorandom number generators discovered
 ; by George Marsaglia and detailed in his 2003 paper, Xorshift RNGs.
 ;
 ; 16-bit xorshift pseudorandom number generator by John Metcalf
 ; returns   hl = pseudorandom number
 ; corrupts   a
 ; generates 16-bit pseudorandom numbers with a period of 65535
 ; using the xorshift method:
 ; hl ^= hl << 7
 ; hl ^= hl >> 9
 ; hl ^= hl << 8
 ; some alternative shift triplets which also perform well are:
 ; 6, 7, 13; 7, 9, 13; 9, 7, 13.
 	psect	text
 	GLOBAL	_xrnd, _xrndseed
 _xrnd:
 	ld	hl,1		; seed must not be 0
 	ld	a,h
 	rra
 	ld	a,l
 	rra
 	xor	h
 	ld	h,a
 	ld	a,l
 	rra
 	ld	a,h
 	rra
 	xor	l
 	ld	l,a
 	xor	h
 	ld	h,a
 	ld	(_xrnd+1),hl
 	res	7,h		;make-it positive...
 	ret
 _xrndseed:
 	ld	a,r
  	ld	l,a
 	ld	a,r
 	ld	h,a
  	or	l		; HL must be not NULL
  	jr	nz,1f
 	inc	hl
 1:
 	ld	(_xrnd+1),hl
 	ret