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#345

Madsquad 01

Madsquad

2.598 lines of code

MusicSID
Disassemble Download .asm Download .prg intros.c64.org

History

Released
December 1987
Group
Madsquad — Netherlands, founded 1987

This Madsquad crack intro from December 1987 is catalogued on CSDb as release #53416 under the name "Madsquad Intro 03." No individual credits for code, music, or graphics are listed on CSDb for this production. Doc Snyder lists it as Madsquad Crack Intro #01 and likewise records no credited contributors. Madsquad was a Dutch cracking group founded in 1987, part of the Netherlands' active scene during the C64's peak years. The scrolltext includes a ranked greetings list — a common convention of the era — placing Ace, TPI, FCS, and FAC at the top. A separate scrolltext describes a mega in-game trainer and notes that bytes were altered to prevent re-cracking. The New Year wishes in the text are consistent with the December 1987 release date on CSDb. Madsquad appears to have been a relatively small operation, with only three numbered intros documented on CSDb — suggesting a short period of activity within the competitive Dutch cracking scene.

Sources: CSDb · docsnyderspage

madsquad-01.asm 2.598 lines
// ============================================
// output - Disassembled Source
// ============================================
// KickAssembler syntax
// Generated by Restore 64 v0.2.1 alpha build 298, 2026-04-11 21:35:56
// 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:  $1900 (6400)
// IRQ handler:  $1a00 (irq_1a00)
// IRQ handler:  $19f7 (nmi_19f7)
// IRQ handler:  $ea31 (irq_ea31)
//
// Code: 1604 bytes, Data: 61884 bytes
// Labels: 312, Subroutines: 14
//
// Cross-references: all OK
// ============================================


// --- Region $11e3-$147c ---
.pc = $11e3 "sub_11e3"
// Referenced by: jsr from $12b1, $1353, $1360, $136c

sub_11e3:
        tya
        sta $101c,x
// Referenced by: jsr from $12df

sub_11e7:
        lda $106e,y
        sta $d401,x
        sta $1033,x
        lda $10ce,y
        sta $d400,x
        sta $1032,x
        rts

// Referenced by: jsr from $13fa
sub_11fa: {
        lda #$01
        sta $1047,x
loop:
        lda $101e,x
        sta $fb
        lda $101f,x
        sta $fc
        lda $101d,x
        asl
        tay
        iny
        lda ($fb),y
        cmp #$00
        bne skip1
        lda #$00
        sta $101d,x
        ldy #$01
        lda ($fb),y
        clv
        bvc skip2
skip1:
        cmp #$01
        bne skip2
        lda #$00
        sta dat_1000
        rts
skip2:
        pha
        dey
        lda ($fb),y
        sta $fb
        pla
        sta $fc
        lda $102f,x
        tay
        clc
        adc #$02
        sta $102f,x
        lda ($fb),y
        cmp #$00
        bne skip3
        lda #$00
        sta $102f,x
        inc $101d,x
        jmp $11ff
skip3:
        sta $101c,x
        iny
        lda ($fb),y
        pha
        and #$1f
        sta $1004,x
        pla
        and #$e0
        lsr
        lsr
        tay
        lda $1059,x
        sta $fb
        lda $105a
        sta $fc
        lda #$00
        sta $d404,x
        sta $d402,x
        sta $1034,x
        lda ($fb),y
        iny
        sta $d403,x
        sta $1035,x
        and #$f0
        sta $1003,x
        lda ($fb),y
        iny
        sta $1005,x
        lda ($fb),y
        iny
        sta $d405,x
        lda ($fb),y
        iny
        sta $d406,x
        lda ($fb),y
        iny
        sta $101a,x
        lda ($fb),y
        iny
        sta $1007,x
        lda ($fb),y
        iny
        sta $1046,x
        lda ($fb),y
        iny
        sta $1008,x
        ldy $101c,x
        jsr sub_11e3
        lda $1033,x
        sta $1049,x
        lda $1032,x
        sta $1048,x
        lda $1005,x
        sta $d404,x
        lda #$00
        sta $1009,x
        rts
}

// Referenced by: jsr from $13ea
sub_12cc: {
        inc $1006,x