{ "schema": 1, "platform": "c64", "game": "a-view-to-a-kill/finale", "build": null, "source": "regenerator2000 live", "regions": { "exclude": [ [ 256, 511, "stack" ], [ 53248, 57343, "I/O and colour RAM" ], [ 1024, 2047, "screen RAM" ], [ 3008, 4095, "not the finale's: after the last sprite shape ($2E) nothing reads these bytes; loaded by the packer as whatever was in memory when the part was saved" ], [ 4512, 7071, "not the finale's: stale bytes after show_ending's final JMP at $119D, a near copy of paris at the same addresses (2443 of 3680 bytes in $11A0-$1FFF equal); no finale code reads them" ], [ 7073, 8191, "not the finale's: stale bytes after code_flag, part of the same near copy of paris; no finale code reads them" ], [ 16192, 17383, "not the finale's: the unused tail of bank 0's bitmap area and $4000-$43E7; nothing reads them" ], [ 17384, 18431, "screen matrix of the cracked-lens picture at $4400 (VIC bank 1): show_ending fills $43E8-$47E7 with $0E before it is shown (the loaded copy is already $0E except one $0F at $44A4); $47E8-$47FF unused, sprites are off in bank 1" ], [ 18432, 20479, "not the finale's: stale bytes, 1187 of 2048 equal to paris at the same addresses; nothing in the finale reads them" ], [ 20497, 24575, "not the finale's: a near copy of paris's code and data at the same addresses (2264 of 4079 bytes equal; $5027 reads $D059 where paris has $D019, $5016 ORs #$41 where paris ORs #$01), left behind when the 17-byte delay routine was written over $5000; never run here" ], [ 32576, 32767, "not the finale's: the unused tail of bank 1's bitmap area; nothing reads it" ], [ 32929, 33023, "not the finale's: stale bytes after secret_code, identical to city-hall's image at $80A1-$80FF; nothing in the finale reads them" ], [ 33024, 65535, "not written by the finale's depacker (traced: it writes only $0800-$80FF), so not part of the program: $8100-$BF88 is memory left from before, $BF89-$FFFF the packed stream's working copy; includes the RAM under the KERNAL at $FFCF/$FFD2 that calls to CHRIN/CHROUT name" ] ], "extra": [ [ 8192, 16191, "shower picture bitmap, loaded ready-made, shown by show_ending in VIC bank 0" ], [ 24576, 32575, "cracked-lens picture bitmap, loaded ready-made, shown by ending_crack in VIC bank 1" ], [ 2048, 3007, "fifteen sprite shapes $20-$2E of the ending animation, found through sprite pointers" ] ] }, "blocks": [ { "start": 0, "end": 2047, "type": "Undefined" }, { "start": 2048, "end": 3007, "type": "Byte" }, { "start": 3008, "end": 4095, "type": "Undefined" }, { "start": 4096, "end": 4511, "type": "Code" }, { "start": 4512, "end": 7071, "type": "Undefined" }, { "start": 7072, "end": 7072, "type": "Byte" }, { "start": 7073, "end": 8191, "type": "Undefined" }, { "start": 8192, "end": 16191, "type": "Byte" }, { "start": 16192, "end": 20479, "type": "Undefined" }, { "start": 20480, "end": 20496, "type": "Code" }, { "start": 20497, "end": 24575, "type": "Undefined" }, { "start": 24576, "end": 32575, "type": "Byte" }, { "start": 32576, "end": 32767, "type": "Undefined" }, { "start": 32768, "end": 32810, "type": "Code" }, { "start": 32811, "end": 32843, "type": "PETSCII Text" }, { "start": 32844, "end": 32913, "type": "Code" }, { "start": 32914, "end": 32923, "type": "Byte" }, { "start": 32924, "end": 32928, "type": "PETSCII Text" }, { "start": 32929, "end": 65535, "type": "Undefined" } ], "symbols": [ { "address": 251, "name": "fill_ptr_bank0", "type": "ZeroPageAbsoluteAddress", "kind": "user" }, { "address": 252, "name": "zpa_FC", "type": "ZeroPageAbsoluteAddress", "kind": "auto" }, { "address": 253, "name": "fill_ptr_bank1", "type": "ZeroPageAbsoluteAddress", "kind": "user" }, { "address": 254, "name": "zpa_FE", "type": "ZeroPageAbsoluteAddress", "kind": "auto" }, { "address": 792, "name": "a_0318", "type": "AbsoluteAddress", "kind": "auto" }, { "address": 793, "name": "a_0319", "type": "AbsoluteAddress", "kind": "auto" }, { "address": 2040, "name": "a_07F8", "type": "AbsoluteAddress", "kind": "auto" }, { "address": 2041, "name": "a_07F9", "type": "AbsoluteAddress", "kind": "auto" }, { "address": 2042, "name": "a_07FA", "type": "AbsoluteAddress", "kind": "auto" }, { "address": 2043, "name": "a_07FB", "type": "AbsoluteAddress", "kind": "auto" }, { "address": 2044, "name": "a_07FC", "type": "AbsoluteAddress", "kind": "auto" }, { "address": 2045, "name": "a_07FD", "type": "AbsoluteAddress", "kind": "auto" }, { "address": 2048, "name": "spr_head_back_lo", "type": "UserDefined", "kind": "user" }, { "address": 2112, "name": "spr_head_back_hi", "type": "UserDefined", "kind": "user" }, { "address": 2176, "name": "spr_turn1_a", "type": "UserDefined", "kind": "user" }, { "address": 2240, "name": "spr_turn1_b", "type": "UserDefined", "kind": "user" }, { "address": 2304, "name": "spr_turn1_c", "type": "UserDefined", "kind": "user" }, { "address": 2368, "name": "spr_turn1_d", "type": "UserDefined", "kind": "user" }, { "address": 2432, "name": "spr_turn2_a", "type": "UserDefined", "kind": "user" }, { "address": 2496, "name": "spr_turn2_b", "type": "UserDefined", "kind": "user" }, { "address": 2560, "name": "spr_turn2_c", "type": "UserDefined", "kind": "user" }, { "address": 2624, "name": "spr_turn2_d", "type": "UserDefined", "kind": "user" }, { "address": 2688, "name": "spr_bar_short", "type": "UserDefined", "kind": "user" }, { "address": 2752, "name": "spr_bar_long", "type": "UserDefined", "kind": "user" }, { "address": 2816, "name": "spr_ball_small", "type": "UserDefined", "kind": "user" }, { "address": 2880, "name": "spr_ball_mid", "type": "UserDefined", "kind": "user" }, { "address": 2944, "name": "spr_ball_big", "type": "UserDefined", "kind": "user" }, { "address": 4096, "name": "show_ending", "type": "Jump", "kind": "user" }, { "address": 4112, "name": "b_1010", "type": "Branch", "kind": "auto" }, { "address": 4114, "name": "b_1012", "type": "Branch", "kind": "auto" }, { "address": 4158, "name": "ending_head_back", "type": "UserDefined", "kind": "user" }, { "address": 4206, "name": "ending_head_turn1", "type": "UserDefined", "kind": "user" }, { "address": 4284, "name": "ending_head_turn2", "type": "UserDefined", "kind": "user" }, { "address": 4362, "name": "ending_bar", "type": "UserDefined", "kind": "user" }, { "address": 4418, "name": "ending_ball", "type": "UserDefined", "kind": "user" }, { "address": 4486, "name": "ending_crack", "type": "UserDefined", "kind": "user" }, { "address": 4509, "name": "j_119D", "type": "Jump", "kind": "auto" }, { "address": 7072, "name": "code_flag", "type": "AbsoluteAddress", "kind": "user" }, { "address": 8192, "name": "pic_shower_rows00", "type": "UserDefined", "kind": "user" }, { "address": 9152, "name": "pic_shower_rows03", "type": "UserDefined", "kind": "user" }, { "address": 10112, "name": "pic_shower_rows06", "type": "UserDefined", "kind": "user" }, { "address": 11072, "name": "pic_shower_rows09", "type": "UserDefined", "kind": "user" }, { "address": 12032, "name": "pic_shower_rows12", "type": "UserDefined", "kind": "user" }, { "address": 12992, "name": "pic_shower_rows15", "type": "UserDefined", "kind": "user" }, { "address": 13952, "name": "pic_shower_rows18", "type": "UserDefined", "kind": "user" }, { "address": 14912, "name": "pic_shower_rows21", "type": "UserDefined", "kind": "user" }, { "address": 15872, "name": "pic_shower_rows24", "type": "UserDefined", "kind": "user" }, { "address": 20480, "name": "delay", "type": "Subroutine", "kind": "user" }, { "address": 20482, "name": "b_5002", "type": "Branch", "kind": "auto" }, { "address": 20484, "name": "b_5004", "type": "Branch", "kind": "auto" }, { "address": 24576, "name": "pic_cracked_rows00", "type": "UserDefined", "kind": "user" }, { "address": 25536, "name": "pic_cracked_rows03", "type": "UserDefined", "kind": "user" }, { "address": 26496, "name": "pic_cracked_rows06", "type": "UserDefined", "kind": "user" }, { "address": 27456, "name": "pic_cracked_rows09", "type": "UserDefined", "kind": "user" }, { "address": 28416, "name": "pic_cracked_rows12", "type": "UserDefined", "kind": "user" }, { "address": 29376, "name": "pic_cracked_rows15", "type": "UserDefined", "kind": "user" }, { "address": 30336, "name": "pic_cracked_rows18", "type": "UserDefined", "kind": "user" }, { "address": 31296, "name": "pic_cracked_rows21", "type": "UserDefined", "kind": "user" }, { "address": 32256, "name": "pic_cracked_rows24", "type": "UserDefined", "kind": "user" }, { "address": 32768, "name": "finale_start", "type": "Jump", "kind": "user" }, { "address": 32795, "name": "b_801B", "type": "Branch", "kind": "auto" }, { "address": 32811, "name": "str_enter_code", "type": "Field", "kind": "user" }, { "address": 32844, "name": "read_code", "type": "Branch", "kind": "user" }, { "address": 32846, "name": "b_804E", "type": "Branch", "kind": "auto" }, { "address": 32867, "name": "b_8063", "type": "Branch", "kind": "auto" }, { "address": 32888, "name": "b_8078", "type": "Branch", "kind": "auto" }, { "address": 32906, "name": "b_808A", "type": "Branch", "kind": "auto" }, { "address": 32914, "name": "code_input", "type": "Field", "kind": "user" }, { "address": 32924, "name": "secret_code", "type": "Field", "kind": "user" }, { "address": 65487, "name": "s_FFCF", "type": "Subroutine", "kind": "auto" }, { "address": 65490, "name": "s_FFD2", "type": "Subroutine", "kind": "auto" } ], "comments": [ { "address": 251, "type": "line", "text": "Zero-page pointer (lo) used by show_ending's colour fill: starts at $03E8 and steps a page at a time to cover $03E8-$07E7, the first picture's screen matrix at $0400 (24 bytes early, so it ends at $07E7 and never touches the sprite pointers)." }, { "address": 252, "type": "line", "text": "High byte of fill_ptr_bank0: $03, incremented to $07 by show_ending's fill loop." }, { "address": 253, "type": "line", "text": "Zero-page pointer (lo) used by show_ending's colour fill: starts at $43E8 to cover $43E8-$47E7, the second picture's screen matrix at $4400 in VIC bank 1." }, { "address": 254, "type": "line", "text": "High byte of fill_ptr_bank1: $43, incremented to $47 by show_ending's fill loop." }, { "address": 792, "type": "line", "text": "KERNAL NMI vector low byte, set to $00 by finale_start: with $0319 it sends RESTORE to $8000 (finale_start), the code prompt." }, { "address": 793, "type": "line", "text": "KERNAL NMI vector high byte, set to $80 by finale_start (see $0318)." }, { "address": 2048, "type": "line", "text": "Sprite shape $20 ($0800-$083F), sprite 0 in ending step 1 (x $91, y $7F): a small black cap at its top, the bottom of the man's head seen from behind, under shape $21." }, { "address": 2112, "type": "line", "text": "Sprite shape $21 ($0840-$087F), sprite 1 in ending step 1 (x $91, y $6B): a solid black oval, the back of the man's head." }, { "address": 2176, "type": "line", "text": "Sprite shape $22 ($0880-$08BF), sprite 0 in ending step 2 (x $90, y $7F): a three-line black patch at its top, the neck under the turning head." }, { "address": 2240, "type": "line", "text": "Sprite shape $23 ($08C0-$08FF), sprite 1 in ending step 2 (x $90, y $7F): a three-pixel outline stroke at its top right, the end of the face outline drawn by shape $25." }, { "address": 2304, "type": "line", "text": "Sprite shape $24 ($0900-$093F), sprite 2 in ending step 2 (x $90, y $6A): a black crescent, the hair of the head part-turned to the left." }, { "address": 2368, "type": "line", "text": "Sprite shape $25 ($0940-$097F), sprite 3 in ending step 2 (x $90, y $6A): a one-pixel outline down its right side with a small bump, the face's profile edge as the head turns left." }, { "address": 2432, "type": "line", "text": "Sprite shape $26 ($0980-$09BF), sprite 0 in ending step 3 (x $90, y $7F): only a two-pixel mark in its top row, the end of the profile line drawn by shape $29." }, { "address": 2496, "type": "line", "text": "Sprite shape $27 ($09C0-$09FF), sprite 1 in ending step 3 (x $90, y $7F): a three-line black patch at its top, the neck under the head in profile." }, { "address": 2560, "type": "line", "text": "Sprite shape $28 ($0A00-$0A3F), sprite 2 in ending step 3 (x $90, y $6A): a black wedge sweeping to the upper right, the hair of the head facing left." }, { "address": 2624, "type": "line", "text": "Sprite shape $29 ($0A40-$0A7F), sprite 3 in ending step 3 (x $90, y $6A): a one-pixel profile outline down the right side, a different line from shape $25, the face turned further to the left." }, { "address": 2688, "type": "line", "text": "Sprite shape $2A ($0A80-$0ABF), sprite 4 in ending step 4 (x $58, y $98): a rounded lump on a thick horizontal bar that runs to the frame's right edge, over the top of the small machine at the lower left." }, { "address": 2752, "type": "line", "text": "Sprite shape $2B ($0AC0-$0AFF), sprite 4 from ending step 5 on: the lump further left and the bar longer, as if the object reached further out." }, { "address": 2816, "type": "line", "text": "Sprite shape $2C ($0B00-$0B3F), sprite 5 in ending step 6 (x $58, y $98): a small black disc with a dotted square and diagonals on it." }, { "address": 2880, "type": "line", "text": "Sprite shape $2D ($0B40-$0B7F), sprite 5 in ending step 7 (x $68, y $80): the disc filling the whole 24 x 21 frame. Its 63 image bytes are identical to shape $2E's; only the unused 64th byte differs ($36 against $00)." }, { "address": 2944, "type": "line", "text": "Sprite shape $2E ($0B80-$0BBF), sprite 5 in ending step 8 (x $78, y $70): the same image as $2D, shown double width and height ($D017, $D01D), so the disc grows by expansion rather than by a bigger drawing, just before the lens cracks." }, { "address": 4096, "type": "line", "text": "The finale's whole ending, reached only from read_code on a correct code; never returns. Fills both pictures' screen matrices ($0400 and $4400, from $03E8/$43E8 through fill_ptr_bank0/1) with $0E, black ink on light blue paper; switches the VIC to hires bitmap mode (D011 bit 5) with the bitmap at +$2000 (D018 bit 3), light grey border and background; shows the loaded shower picture at $2000 in VIC bank 0 and animates it with black sprites (shapes $0800-$0BBF, pointers $20-$2E) in eight steps separated by delay ($5000); then selects VIC bank 1 to show the cracked-lens picture at $6000, turns every sprite off and stops at $119D. No sound, no keyboard or joystick read; the KERNAL IRQ keeps running." }, { "address": 4132, "type": "side", "text": "hires bitmap on; bitmap at +$2000" }, { "address": 4148, "type": "side", "text": "light grey background and border" }, { "address": 4158, "type": "line", "text": "Step 1: sprites 0 and 1 (shapes $20 at $0800 and $21 at $0840, black, x $91, y $7F and $6B) draw a man's dark head seen from behind beside the woman in the shower; $D015 = $FF turns on all eight sprites, including 2-7 whose pointers and positions this part never set at this point; then delay." }, { "address": 4206, "type": "line", "text": "Step 2: the head as four sprites (shapes $22-$25 at $0880-$093F; sprites 0-1 at y $7F, 2-3 at y $6A, all x $90, black), the first frame of the head turning to the left; only sprites 0-3 on ($0F); then delay." }, { "address": 4284, "type": "line", "text": "Step 3: the same four sprites with shapes $26-$29 ($0980-$0A3F), the head in profile facing left towards the small machine at the picture's lower left; then delay." }, { "address": 4362, "type": "line", "text": "Steps 4 and 5: sprite 4 (black, x $58, y $98, over the top of the small machine at the lower left) shows shape $2A ($0A80), a short horizontal bar, then after a delay shape $2B ($0AC0), a longer bar; $D015 = $1F; delay after each." }, { "address": 4418, "type": "line", "text": "Steps 6 to 8: sprite 5 (black) carries a round object with a dotted square on it: shape $2C ($0B00) at x $58, y $98 over the machine, then (INC of the pointer) shape $2D ($0B40) at x $68, y $80, then shape $2E ($0B80, the same image as $2D) at x $78, y $70 with sprite 5 doubled in both directions ($D017 = $D01D = $20), so it flies up and right towards the man's head and grows; a delay after each position." }, { "address": 4486, "type": "line", "text": "Last step: makes CIA 2 port A bits 0-1 outputs ($DD02) and writes %10 to them ($DD00), selecting VIC bank 1 ($4000-$7FFF), so the same bitmap mode now shows the cracked-lens picture at $6000 with the matrix at $4400; sprites off ($D015 = 0); then JMP * at $119D forever. Only RESTORE (NMI to finale_start) or a reset leaves it." }, { "address": 4509, "type": "side", "text": "the end: loops here for good; RESTORE jumps to $8000 without restoring the VIC" }, { "address": 7072, "type": "line", "text": "Code flag shared by name with the other parts' prompts: read_code stores 1 on a correct code ($8072) and 0 on an early RETURN ($808C). Nothing in the finale reads it, and the 0 path restarts the prompt, so the ending always runs with 1 here." }, { "address": 8192, "type": "line", "text": "Shower picture bitmap, loaded ready-made and shown by show_ending in VIC bank 0 ($2000-$23BF), hires, one colour pair for the whole picture from the $0E fill: rows 0-2: the solid black top margin and the upper arcs of both binocular lenses, with the top of the shower pipe." }, { "address": 9152, "type": "line", "text": "Shower picture bitmap, loaded ready-made and shown by show_ending in VIC bank 0 ($23C0-$277F), hires, one colour pair for the whole picture from the $0E fill: rows 3-5: the tiled bathroom wall behind the shower, the pipe bending down to the shower head." }, { "address": 10112, "type": "line", "text": "Shower picture bitmap, loaded ready-made and shown by show_ending in VIC bank 0 ($2780-$2B3F), hires, one colour pair for the whole picture from the $0E fill: rows 6-8: water falling from the shower head, the top of the woman's head, the tiles either side." }, { "address": 11072, "type": "line", "text": "Shower picture bitmap, loaded ready-made and shown by show_ending in VIC bank 0 ($2B40-$2EFF), hires, one colour pair for the whole picture from the $0E fill: rows 9-11: the woman's face and shoulders and the dark shoulders beside her (the sprites add the man's head above them), the curtain rail's rings." }, { "address": 12032, "type": "line", "text": "Shower picture bitmap, loaded ready-made and shown by show_ending in VIC bank 0 ($2F00-$32BF), hires, one colour pair for the whole picture from the $0E fill: rows 12-14: the shower-curtain rail and the top of the curtain, the top of a small machine on a pole outside the left lens." }, { "address": 12992, "type": "line", "text": "Shower picture bitmap, loaded ready-made and shown by show_ending in VIC bank 0 ($32C0-$367F), hires, one colour pair for the whole picture from the $0E fill: rows 15-17: the hanging curtain folds and soap bubbles, the body of the small machine at the left." }, { "address": 13952, "type": "line", "text": "Shower picture bitmap, loaded ready-made and shown by show_ending in VIC bank 0 ($3680-$3A3F), hires, one colour pair for the whole picture from the $0E fill: rows 18-20: the bottom of the curtain, the machine's base, the lower arcs where the two lenses meet." }, { "address": 14912, "type": "line", "text": "Shower picture bitmap, loaded ready-made and shown by show_ending in VIC bank 0 ($3A40-$3DFF), hires, one colour pair for the whole picture from the $0E fill: rows 21-23: solid black ink ($FF bytes) below the lenses." }, { "address": 15872, "type": "line", "text": "Shower picture bitmap, loaded ready-made and shown by show_ending in VIC bank 0 ($3E00-$3F3F), hires, one colour pair for the whole picture from the $0E fill: row 24: the last solid black ($FF) character row." }, { "address": 20480, "type": "line", "text": "Busy-wait pause between the ending's animation steps: 79 x 255 passes of a 17-cycle loop (DEX, six NOPs, BNE), about 343,000 cycles or 0.35 s on a PAL machine. Destroys X and Y. Called eight times by show_ending." }, { "address": 24576, "type": "line", "text": "Cracked-lens picture bitmap, loaded ready-made and shown by ending_crack in VIC bank 1 ($6000-$63BF), hires, one colour pair for the whole picture from the $0E fill: rows 0-2: the solid black top margin and the lens tops with the first cracks running in from their edges." }, { "address": 25536, "type": "line", "text": "Cracked-lens picture bitmap, loaded ready-made and shown by ending_crack in VIC bank 1 ($63C0-$677F), hires, one colour pair for the whole picture from the $0E fill: rows 3-5: the top of the jagged black hole in the middle of the lenses and the cracks around it." }, { "address": 26496, "type": "line", "text": "Cracked-lens picture bitmap, loaded ready-made and shown by ending_crack in VIC bank 1 ($6780-$6B3F), hires, one colour pair for the whole picture from the $0E fill: rows 6-8: the hole at its widest with a loose shard of glass inside it, cracks running to both lens edges." }, { "address": 27456, "type": "line", "text": "Cracked-lens picture bitmap, loaded ready-made and shown by ending_crack in VIC bank 1 ($6B40-$6EFF), hires, one colour pair for the whole picture from the $0E fill: rows 9-11: the lower part of the hole and cracks spreading across the right lens." }, { "address": 28416, "type": "line", "text": "Cracked-lens picture bitmap, loaded ready-made and shown by ending_crack in VIC bank 1 ($6F00-$72BF), hires, one colour pair for the whole picture from the $0E fill: rows 12-14: the bottom points of the hole and cracks towards the lower lens edges." }, { "address": 29376, "type": "line", "text": "Cracked-lens picture bitmap, loaded ready-made and shown by ending_crack in VIC bank 1 ($72C0-$767F), hires, one colour pair for the whole picture from the $0E fill: rows 15-17: crack lines across the lower parts of both lenses." }, { "address": 30336, "type": "line", "text": "Cracked-lens picture bitmap, loaded ready-made and shown by ending_crack in VIC bank 1 ($7680-$7A3F), hires, one colour pair for the whole picture from the $0E fill: rows 18-20: the lower arcs of both lenses with the last crack ends." }, { "address": 31296, "type": "line", "text": "Cracked-lens picture bitmap, loaded ready-made and shown by ending_crack in VIC bank 1 ($7A40-$7DFF), hires, one colour pair for the whole picture from the $0E fill: rows 21-23: solid black ink ($FF bytes) below the cracked lenses." }, { "address": 32256, "type": "line", "text": "Cracked-lens picture bitmap, loaded ready-made and shown by ending_crack in VIC bank 1 ($7E00-$7F3F), hires, one colour pair for the whole picture from the $0E fill: row 24: the final solid black ($FF) character row of the cracked-lens bitmap." }, { "address": 32768, "type": "line", "text": "Part entry (the depacker jumps here) and restart point. Points the NMI vector $0318/$0319 at itself, so RESTORE (KERNAL NMI $FE43: SEI, JMP ($0318)) restarts this prompt; SEI (undone by the first CHROUT, which ends in CLI); border, background and background colours 1-2 to black; then prints str_enter_code through KERNAL CHROUT $FFD2 until its $FF terminator and falls into read_code. Reached from the hand-over, from a RETURN-only entry ($808F) and from RESTORE." }, { "address": 32811, "type": "line", "text": "PETSCII prompt printed by finale_start, ended by $FF: CLR/HOME ($93), $08 (lock the case switch), cursor down, nine cursor-rights, yellow ($9E), 'PLEASE ENTER CODE', RETURN, cursor down." }, { "address": 32844, "type": "line", "text": "Reads the code: up to five characters through KERNAL CHRIN $FFCF (the screen editor returns a typed line after RETURN), skipping zero bytes, storing each in code_input at $8092+Y. A RETURN before the fifth character goes to $808A (flag $1BA0 = 0, back to finale_start). After five characters compares them with secret_code ($809C, 'ILVCT'); a match stores 1 in $1BA0 and jumps to show_ending at $1000. A mismatch ($8078) prints RETURN, cursor up and a space through CHROUT and reads again from here. Characters typed after the fifth are not checked." }, { "address": 32880, "type": "side", "text": "all five matched: flag 1, run the ending" }, { "address": 32888, "type": "side", "text": "wrong code: RETURN, cursor-up, space, then read again" }, { "address": 32906, "type": "side", "text": "RETURN before five characters: flag 0, restart the prompt (the ending is never reached this way)" }, { "address": 32914, "type": "line", "text": "Buffer of the characters read by read_code: $8092-$8096 receive up to five characters (a RETURN is stored too when typed early); $8097-$809B are loaded as $FF and never written. The play snapshot holds 'ILVCT' here." }, { "address": 32924, "type": "line", "text": "The finale's code, five PETSCII bytes 'ILVCT', compared byte for byte with code_input by read_code. A fixed string in the part, not derived from play." } ] }