History
- Released
- 14 January 1988
- Code
- Changeling
- Music
- Action Force by Martin Wheeler (ripped)
- Charset
- Kevin Bulmer
- Group
- Abyss — United States, founded 1987
Ranked #19 on intros.c64.org, this Abyss release is catalogued on CSDb as "Abyss Intro" and dated 14 January 1988. Changeling coded the intro, Kevin Bulmer is credited for the charset, and the soundtrack is a rip of "Action Force" by Martin Wheeler — the title tune from the game of the same name — preserved in the HVSC under Wheeler's composer directory. Abyss were a US group founded in 1987, and this is their highest-ranked entry in the archive. Doc Snyder's page for Abyss exists but carries no section confirmed to map to this specific intro, so CSDb is the sole primary source for the credits above. Released in mid-January 1988, the intro came from one of the smaller American contributions to what was by this point a predominantly European cracking scene.
Sources: CSDb · docsnyderspage
// ============================================ // output - Disassembled Source // ============================================ // KickAssembler syntax // Generated by Restore 64 v0.2.1 alpha build 298, 2026-04-01 10:59:15 // https://restore64.dev by datucker / Rabenauge // // Load address: $0800 End: $ffff (63488 bytes) // Crunched with Exomizer v2/v3 (with relocation) — depacked by emulation // Packer entry: $0810 (via BASIC SYS 2064) // Entry point: $1000 (4096) // IRQ handler: $1287 (irq_1287) // IRQ handler: $12ce (irq_12ce) // IRQ handler: $131b (irq_131b) // IRQ handler: $1362 (irq_1362) // IRQ handler: $ea31 (irq_ea31) // // Code: 3536 bytes, Data: 59952 bytes // Labels: 375, Subroutines: 14 // // Cross-references: all OK // ============================================ // --- Region $1000-$108d --- .pc = $1000 "main_1000" main_1000: .byte $3c,$03,$10 // nop $1003,x // ILLEGAL jsr sub_185b .byte $3c,$09,$10 // nop $1009,x // ILLEGAL jsr $fda3 jsr $ffe7 .byte $3c,$12,$10 // nop $1012,x // ILLEGAL lda #$c1 sta $0318 lda #$e1 sta $0328 lda #$0b sta $d011 lda #$00 tay loc_1024: sta $0334,y iny cpy #$50 bne loc_1024 lda #$1f sta $034d lda #$00 sta $d020 sta $d021 sta $033e sta $0334 sta $0337 lda #$c7 sta $033b sta $033c lda #$0a sta $0335 lda #$0c sta $0338 lda #$01 sta $0336 lda #$02 sta $033a inc $1e96 jsr sub_15ec jsr sub_1e00 inc $1e96 jsr sub_1900 lda #$0f sta $d418 jsr sub_1253 lda #$00 tay loc_1078: sta sub_1253,y iny cpy #$2d bne loc_1078 lda #$00 sta $c6 loc_1084: lda $c5 cmp #$ef bne loc_1084 jmp loc_17e5 dat_108d: .byte $01 // . // --- Region $1253-$1635 --- .pc = $1253 "sub_1253" // Referenced by: jsr from $1072, $ed1e sub_1253: .byte $3c,$56,$12 // nop $1256,x // ILLEGAL sei .byte $3c,$5a,$12 // nop $125a,x // ILLEGAL lda $0314 sta $05 .byte $3c,$62,$12 // nop $1262,x // ILLEGAL lda $0315 sta $06 lda #$01 sta $d01a lda #$7f sta $dc0d lda #$37 sta $d012 lda #$87 sta $0314 lda #$12 sta $0315 lda #$1b sta $d011 .byte $57,$60 // sre $60,x // ILLEGAL irq_1287: { lda #$01 sta $d019 lda #$1b sta $d011 lda #$15 sta $d018 ldy #$00 ldx #$0d loop1: dex bne loop1 loop2: lda dat_108d,y sta $d020 lda $1099,y sta $d021 ldx $10a5,y loop3: dex bne loop3 iny cpy #$0c bne loop2 lda #$00 sta $d020 sta $d021 lda #$49 sta $d012