notes.txt

These are the instructions you need to implement to get to the title/copyright:

add
call
je
jump
jz
loadw
print
put_prop
ret
store
storew
sub
test_attr
new_line


...these are all the opcodes that Zork 1 uses, below. Of all the 119 opcodes,
not all are available to the version 3 Z-Machine, but Zork doesn't use even
all of those:

ADD
AND
CALL
CLEAR_ATTR
DEC
DEC_CHK
DIV
GET_CHILD
GET_NEXT_PROP
GET_PARENT
GET_PROP
GET_PROP_ADDR
GET_PROP_LEN
GET_SIBLING
INC
INC_CHK
INSERT_OBJ
JE
JG
JIN
JL
JUMP
JZ
LOAD
LOADB
LOADW
MOD
MUL
NEW_LINE
OR
PRINT
PRINT_ADDR
PRINT_CHAR
PRINT_NUM
PRINT_OBJ
PRINT_PADDR
PRINT_RET
PULL
PUSH
PUT_PROP
QUIT
RANDOM
READ
REMOVE_OBJ
RESTART
RESTORE
RET
RET_POPPED
RFALSE
RTRUE
SAVE
SET_ATTR
STORE
STOREB
STOREW
SUB
TEST
TEST_ATTR
VERIFY




These are the opcodes that are, strictly, part of Version 3, but they
were added very late in the Version 3 era. Most Infocom games will run
without them.

    188 show_status
    189 verify
    234 split_window
    235 set_window
    243 output_stream
    244 input_stream
    245 sound_effect

Then version 4 added 20 more opcodes, and adjusted some data structures to
allow for more objects, metadata, etc.

    188 show_status
    189 verify
    234 split_window
    235 set_window
    243 output_stream
    244 input_stream
    245 sound_effect
    25 call_2s
    180 save_ver4
    224 call_vs;
    228 sread_ver4
    236 call_vs2
    237 erase_window
    238 erase_line
    239 set_cursor
    240 get_cursor
    241 set_text_style
    242 buffer_mode
    246 read_char
    247 scan_table

Then Version 5 added 28 more opcodes (etc):

    26 call_2n
    27 set_colour
    28 throw
    136 call_1s
    143 call_1n
    185 catch
    191 piracy
    228 aread
    243 output_stream_ver5
    245 sound_effect_ver5
    248 not_ver5
    249 call_vn
    250 call_vn2
    251 tokenise
    252 encode_text
    253 copy_table
    254 print_table
    255 check_arg_count
    ext0 save_ext
    ext1 restore_ext
    ext2 log_shift
    ext3 art_shift
    ext4 set_font
    ext9 save_undo
    ext10 restore_undo
    ext11 print_unicode
    ext12 check_unicode
    ext13 set_true_colour

And finally, in Version 6:
    ext5 draw_picture
    ext6 picture_data
    ext7 erase_picture
    ext8 set_margins
    ext16 move_window
    ext17 window_size
    ext18 window_style
    ext19 get_wind_prop
    ext20 scroll_window
    ext21 pop_stack
    ext22 read_mouse
    ext23 mouse_window
    ext24 push_stack
    ext25 put_wind_prop
    ext26 print_form
    ext27 make_menu
    ext28 picture_table
    ext29 buffer_screen

Version 7 and 8 add no new instructions.