Subversion Repositories NedoOS

        OUTPUT "build/loader464.bin"

code_start      equ $8000
        org code_start

start:
        ld a,$FF        ; OFF
        call $BC6B      ; CASNOISY

        ; check loading screen
        ld a,(settings.load_screen)
        or a
        jr z,.load_code

.load_screen:
        ; load screen
        ld hl,$C000     ; dest
        ld de,$4000     ; size
        ld a,$16        ; type: data
        call $BCA1      ; CASREAD (headerless)

.load_code:
        ld hl,(settings.start_addr)
        push hl

        ld hl,(settings.code_addr)
        ld de,(settings.code_len)
        ld a,$16        ; type: data
        jp $BCA1        ; CASREAD

settings:
.load_screen:   .db $00
.start_addr:    .dw $0000
.code_addr:             .dw $0000
.code_len:              .dw $0000