#569

Brenda Import Group [BIG] 01

Brenda Import Group [BIG]

3.561 lines of code

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History

Group
Brenda Import Group [BIG]

The sole ranked intro from Brenda Import Group -- a group whose name indicates a focus on importing C64 software between regions. Import groups played a crucial role in the scene's distribution infrastructure, shuttling releases between continents -- typically from Europe to North America or vice versa. No CSDb release match has been confirmed, and searches on Demozoo, Doc Snyder's page, the Atlantis Prophecy, and Freeze64 all returned no results. The name "Brenda" is distinctive among C64 groups, which more commonly adopted aggressive, technical, or fantastical identities. The intros.c64.org entry generated notable community discussion between 2023 and 2025, including contributions from iAN CooG -- a well-known scene archivist and coder -- and multiple posts from Wanderer in July 2025. This late-period engagement suggests the intro attracted renewed interest from the preservation community. With no country of origin, founding date, or membership data surviving in any consulted database, Brenda Import Group's history and operational scope remain unknown.

Sources: intros.c64.org

big-01.asm 3.561 lines
// ============================================
// output - Disassembled Source
// ============================================
// KickAssembler syntax
// Generated by Restore 64 v0.2.1 alpha build 298, 2026-04-11 21:35:11
// https://restore64.dev by datucker / Rabenauge
//
// Load address: $0801  End: $ffff  (63487 bytes)
// Crunched with Exomizer v2/v3 (with relocation) — depacked by emulation
// Packer entry: $0810 (via BASIC SYS 2064)
// Entry point:  $3900 (14592)
// IRQ handler:  $3963 (irq_3963)
// IRQ handler:  $399b (irq_399b)
// IRQ handler:  $39ca (irq_39ca)
// IRQ handler:  $ea31 (loc_ea31)
//
// Code: 3260 bytes, Data: 60227 bytes
// Labels: 264, Subroutines: 11
//
// Verification: 5 line(s) auto-corrected to .byte for exact byte matching
//
// Cross-references: all OK
// ============================================


// --- Region $0814-$0819 ---
.pc = $0814 "sub_0814"
// Referenced by: jsr from $fcee

sub_0814:
        ora ($a2,x)
        ora $bd
        .byte $42                                   // jam // ILLEGAL

dat_0819:
        .byte $08                                   // .

// --- Region $08f7-$0922 ---
.pc = $08f7 "loc_08f7"

loc_08f7:
        lda ($2f),y
        sta ($2d),y
        iny
        cpy $ff
        bne loc_08f7
        clc
.label sub_0902 = * + 1
        lda $2d
        adc $ff
        sta $2d
        lda $2e
        adc #$00
        sta $2e
        ldy #$00
        dex
        bne loc_08f7
        clc
        lda $2f
        adc $ff
        sta $2f
        lda $30
        adc #$00
        sta $30
        jmp $0100

dat_0922:
        .byte $b9                                   // .

// --- Region $1000-$1006 ---
.pc = $1000 "sub_1000"
// Referenced by: jsr from $3905, $fd0f

sub_1000:
        jmp loc_1040
// Referenced by: jsr from $3980, $fd8a

sub_1003:
        jmp loc_10d8

dat_1006:
        .byte $01                                   // .

// --- Region $1040-$1468 ---
.pc = $1040 "loc_1040"

loc_1040:
        asl
        asl
        asl
        tay
        ldx #$00

loc_1046:
        lda $15a2,y
        sta $1528,x
        sta $152e,x
        lda $15a3,y
        sta $152b,x
        sta $1531,x
        iny
        iny
        inx
        cpx #$03
        bne loc_1046
        ldx #$00
        stx $100b
        lda $15a2,y
        sta $1534

loc_106a:
        sta dat_158c,x
        inc $100b
        lda $1534
        clc
        adc $15a2,y
        sta $1534
        clc
        adc $100b
        inx
        cpx #$10
        bne loc_106a
        lda $1020
        beq loc_10b3
        ldx #$02

loc_108a:
        lda $15a3,y
        sta $100b
        and $1535,x
        sta dat_1006,x
        dex
        bpl loc_108a
        bit $100b
        bpl loc_10b3
        ldx #$00

loc_10a0:
        lda $15a4,y
        sta $152e,x
        lda $15a5,y
        sta $1531,x
        iny
        iny
        inx
        cpx #$03
        bne loc_10a0

loc_10b3:
        ldy #$00