4cade/res/attract-mode.txt
2018-11-19 17:50:00 -05:00

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# List of candidates for self-running 'captive' demos
#
# Not all games are good candidates. Some have no demo mode at all.
# Others technically have one but it's visually uninteresting or too short.
# Others are ruled out by technical constraints. Due to the architecture of
# the launcher, all captive demos must run entirely in main memory (48K).
# NO languard card, NO auxmem!
#
# We have enough disk space that we don't worry too much about it. (Wow.)
# Generally we start with an uncompressed ProDOS port of the entire game
# and whittle it down to just the files it needs for its demo mode, then
# apply patches so that it
#
# - returns control after the natural end of the demo cycle
# - returns control on any keypress
# - returns control on any button press (note: some games don't support
# joystick buttons at all, and we don't add button support, but if you
# can start the game by pressing a button, we need to ensure that that
# returns control instead)
# - disables all sound output
#
# 'Returning control' involves activating RAM bank 1 read access and
# jumping to $D000 (labeled as |Reenter| in the source code). The launcher
# puts this code at $0100 before executing a captive demo, so generally
# you can just put 'JMP $0100' anywhere. If a particular game overwrites
# this area of the stack page, you will need to find 6 bytes for the
# 'LDA $C088 / JMP $D000' instructions yourself.
#
# Notes on completed and in-progress captive demos are in res/notes/
#
# TODO
Apple Cider Spider
Bouncing Kamungas
Buzzard Bait
Canyon Climber
Ceiling Zero
Choplifter
Conan
Drelbs
Dung Beetles
Firebird
Flip Out
Formula 1 Racer
Galaxian
Gamma Goblins
Gumball
High Rise
Karateka
Lady Tut
Lost Tomb
Mr. Cool
Nibbler
O'Riley's Mine
Pac-Man
Pie-Man
Repton
Ribbit
Robotron 2084
Sammy Lightfoot [priority]
Serpentine
Snake Byte
Snoggle
Spider Raid [priority]
Starblaster
Stargate
Stellar 7
Succession
Tag Team Wrestling
Thunder Bombs
Track N Field
Tubeway ][
Vindicator
# uncompressed but unpatched
Agent USA
Alien Ambush
Alien Downpour
Hard Hat Mack
# done
Alien Rain
Aquatron
Bolo
BurgerTime
Championship Lode Runner
Dino Eggs
Jungle Hunt
Lode Runner
Pest Patrol
Pitfall II
Plasmania
Pooyan
Sneakers
Spare Change
Spy Hunter
Spy's Demise
Wavy Navy
# obvious candidates that we're skipping
Arkanoid (requires 64K)
Drol (attract mode is minimal)
Mr. Do (attract mode requires 64K)
Prince of Persia (requires 128K)