230 lines
4.8 KiB
ArmAsm
230 lines
4.8 KiB
ArmAsm
;=========================================================
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; gr_copy_to_current, large, 40x48 version
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; for scrolling
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;=========================================================
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; copy linear image at A000 to DRAW_PAGE
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;
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gr_copy_to_current_large:
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lda DRAW_PAGE ; 3
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clc ; 2
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adc #$4 ; 2
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sta gr_copy_line_large+5 ; 4
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sta gr_copy_line_large+11 ; 4
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sta gr_copy_line_large2+5 ; 4
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sta gr_copy_line_large2+11 ; 4
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sta gr_copy_line_large3+5 ; 4
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sta gr_copy_line_large3+11 ; 4
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adc #$1 ; 2
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sta gr_copy_line_large+17 ; 4
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sta gr_copy_line_large+23 ; 4
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sta gr_copy_line_large2+17 ; 4
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sta gr_copy_line_large2+23 ; 4
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sta gr_copy_line_large3+17 ; 4
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sta gr_copy_line_large3+23 ; 4
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adc #$1 ; 2
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sta gr_copy_line_large+29 ; 4
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sta gr_copy_line_large+35 ; 4
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sta gr_copy_line_large2+29 ; 4
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sta gr_copy_line_large2+35 ; 4
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sta gr_copy_line_large3+29 ; 4
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sta gr_copy_line_large3+35 ; 4
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adc #$1 ; 2
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sta gr_copy_line_large+41 ; 4
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sta gr_copy_line_large+47 ; 4
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sta gr_copy_line_large2+41 ; 4
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sta gr_copy_line_large2+47 ; 4
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sta gr_copy_line_large3+41 ; 4
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sta gr_copy_line_large3+47 ; 4
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;===========
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; 45
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; self modify source address
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ldx #0
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smc_loop:
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; line 0
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lda OUTH
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sta gr_copy_line_large+2,X
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lda OUTL
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sta gr_copy_line_large+1,X
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; line 1
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clc
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adc #$28 ; 16 bit add
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sta OUTL
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lda OUTH
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adc #$0
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sta OUTH
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inx
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inx
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inx
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inx
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inx
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inx
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cpx #48
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bne smc_loop
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ldy #39 ; for early ones, copy 120 bytes ; 2
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gr_copy_line_large:
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lda $A000,Y ; load a byte (self modified) ; 4
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sta $400,Y ; store a byte (self modified) ; 5
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lda $A028,Y ; load a byte (self modified) ; 4
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sta $480,Y ; store a byte (self modified) ; 5
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lda $A050,Y ; load a byte (self modified) ; 4
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sta $500,Y ; store a byte (self modified) ; 5
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lda $A078,Y ; load a byte (self modified) ; 4
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sta $580,Y ; store a byte (self modified) ; 5
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lda $A0A0,Y ; load a byte (self modified) ; 4
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sta $600,Y ; store a byte (self modified) ; 5
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lda $A0C8,Y ; load a byte (self modified) ; 4
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sta $680,Y ; store a byte (self modified) ; 5
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lda $A0F0,Y ; load a byte (self modified) ; 4
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sta $700,Y ; store a byte (self modified) ; 5
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lda $A118,Y ; load a byte (self modified) ; 4
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sta $780,Y ; store a byte (self modified) ; 5
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dey ; decrement pointer ; 2
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bpl gr_copy_line_large ; ; 2nt/3
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; self modify source address
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ldx #0
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smc_loop2:
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; line 0
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lda OUTH
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sta gr_copy_line_large2+2,X
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lda OUTL
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sta gr_copy_line_large2+1,X
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; line 1
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clc
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adc #$28 ; 16 bit add
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sta OUTL
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lda OUTH
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adc #$0
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sta OUTH
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inx
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inx
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inx
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inx
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inx
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inx
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cpx #48
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bne smc_loop2
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ldy #39 ; for early ones, copy 120 bytes ; 2
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gr_copy_line_large2:
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lda $A140,Y ; load a byte (self modified) ; 4
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sta $428,Y ; store a byte (self modified) ; 5
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lda $A168,Y ; load a byte (self modified) ; 4
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sta $4A8,Y ; store a byte (self modified) ; 5
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lda $A190,Y ; load a byte (self modified) ; 4
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sta $528,Y ; store a byte (self modified) ; 5
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lda $A1B8,Y ; load a byte (self modified) ; 4
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sta $5A8,Y ; store a byte (self modified) ; 5
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lda $A1E0,Y ; load a byte (self modified) ; 4
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sta $628,Y ; store a byte (self modified) ; 5
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lda $A208,Y ; load a byte (self modified) ; 4
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sta $6A8,Y ; store a byte (self modified) ; 5
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lda $A230,Y ; load a byte (self modified) ; 4
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sta $728,Y ; store a byte (self modified) ; 5
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lda $A258,Y ; load a byte (self modified) ; 4
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sta $7A8,Y ; store a byte (self modified) ; 5
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dey ; decrement pointer ; 2
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bpl gr_copy_line_large2 ; ; 2nt/3
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; self modify source address
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ldx #0
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smc_loop3:
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; line 0
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lda OUTH
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sta gr_copy_line_large3+2,X
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lda OUTL
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sta gr_copy_line_large3+1,X
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; line 1
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clc
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adc #$28 ; 16 bit add
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sta OUTL
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lda OUTH
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adc #$0
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sta OUTH
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inx
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inx
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inx
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inx
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inx
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inx
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cpx #48
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bne smc_loop3
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ldy #39 ; for early ones, copy 120 bytes ; 2
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gr_copy_line_large3:
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lda $A280,Y ; load a byte (self modified) ; 4
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sta $450,Y ; store a byte (self modified) ; 5
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lda $A2A8,Y ; load a byte (self modified) ; 4
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sta $4D0,Y ; store a byte (self modified) ; 5
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lda $A2D0,Y ; load a byte (self modified) ; 4
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sta $550,Y ; store a byte (self modified) ; 5
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lda $A2F8,Y ; load a byte (self modified) ; 4
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sta $5D0,Y ; store a byte (self modified) ; 5
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lda $A320,Y ; load a byte (self modified) ; 4
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sta $650,Y ; store a byte (self modified) ; 5
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lda $A348,Y ; load a byte (self modified) ; 4
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sta $6D0,Y ; store a byte (self modified) ; 5
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lda $A370,Y ; load a byte (self modified) ; 4
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sta $750,Y ; store a byte (self modified) ; 5
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lda $A398,Y ; load a byte (self modified) ; 4
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sta $7D0,Y ; store a byte (self modified) ; 5
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dey ; decrement pointer ; 2
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bpl gr_copy_line_large3 ; ; 2nt/3
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rts ; 6
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