History
- Released
- April 1991
- Code
- Ecco
- Music
- Laxity (Thomas E. Petersen) — "S2 Xerxes" and "Beastie Boys Intro Music", Danko (Tomas Danko) — "Popper", Jeff (Soren Lund) — "Robin Hood-Style" and "Intro-Sucker", Zonix (Anders Oland) — "Cockcrusher - Shadow Vector", Guy Shavitt — "For Exotic Designs" and "Sidchip Music Score 9"
- Group
- X-Factor — Denmark, founded 28 May 1989
The third numbered intro from X-Factor — a Danish cracking group founded on 28 May 1989. Released in April 1991, this intro features an extraordinary eight-tune jukebox with music from five composers: Laxity, Danko, Jeff, Zonix, and Guy Shavitt. Ecco handled the code — he also coded XF-01 as documented on Doc Snyder's page. The sheer number of SID tunes made this one of the most musically generous crack intros of its era. X-Factor operated under the motto "The Future of Today — The Legend of Tomorrow" and maintained connections to major European groups including Dominators, Triad, and Fairlight. Doc Snyder's page preserves multiple X-Factor intros, showing the group's evolving visual style across their releases. The group maintained a website at xfactor.dk, and their greeting lists reveal strong ties to the Danish scene alongside international contacts.
Sources: CSDb · docsnyderspage
// ============================================ // output - Disassembled Source // ============================================ // KickAssembler syntax // Generated by Restore 64 v0.2.1 alpha build 298, 2026-04-11 21:37:03 // 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: $2000 (8192) // IRQ handler: $ea31 (irq_ea31) // IRQ handler: $2046 (irq_2046) // IRQ handler: $2060 (irq_2060) // IRQ handler: $207a (irq_207a) // IRQ handler: $2099 (irq_2099) // // Code: 2818 bytes, Data: 60670 bytes // Labels: 301, Subroutines: 13 // // Cross-references: all OK // ============================================ // --- Region $0908-$090d --- .pc = $0908 "sub_0908" // Referenced by: jsr from $ff8e sub_0908: bmi loc_093a bmi loc_0944 // Referenced by: jsr from $ff9e sub_090c: sec brk // --- Region $093a-$093a --- .pc = $093a "loc_093a" loc_093a: brk // --- Region $0944-$0950 --- .pc = $0944 "loc_0944" loc_0944: sec sec asl $e000,x bmi loc_097b sec sec sec beq loc_0950 loc_0950: brk // --- Region $097b-$0988 --- .pc = $097b "loc_097b" loc_097b: clc bmi loc_09de cpy #$00 sei cpy $fedc inc $7cee brk chr_0988: // === Charset data (1 bytes, $0988-$0988) === .byte $30 // char 0 (partial) // --- Region $09de-$09de --- .pc = $09de "loc_09de" loc_09de: rts // --- Region $1000-$1008 --- .pc = $1000 "sub_1000" // Referenced by: jsr from $20de sub_1000: jmp loc_1548 // Referenced by: jsr from $20b9, $fbe2 sub_1003: lda $15bf beq loc_101f rts // --- Region $101f-$10db --- .pc = $101f "loc_101f" loc_101f: ldx #$02 dec $15c0 bpl loc_102b lda #$02 sta $15c0 loc_102b: lda $15c0 bne loc_1044 ldy dat_15d0,x lda $172e,y and #$40 beq loc_103f lda #$fe sta $15eb,x loc_103f: dec scr_159b,x bmi loc_108b loc_1044: inc $15c7,x lda $15ee,x bne loc_107b lda $15c4,x beq loc_107b lda scr_159b,x bne loc_107b lda $15c0 cmp #$02 bcc loc_107b lda $1027 cmp #$03 bcs loc_1069 lda $159e,x beq loc_107e loc_1069: lda $15c0 cmp #$02 beq loc_1083 loc_1070: ldy dat_1009,x lda #$00 sta $d406,y sta $15b6,x loc_107b: jmp loc_1324 loc_107e: