plsmag_hgr: draw every other scanline
This commit is contained in:
Vince Weaver
parent
d6b3b0a77f
commit
f1b34ac48e
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@ -19,6 +19,7 @@ hires_colors_odd_l1 =$8300
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;Table2 = $8000+64
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HGR = $F3E2
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HGR2 = $F3D8
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; Page Zero
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@ -45,6 +46,7 @@ GBASH_SAVE = $FE
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; =============================================================================
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plasma_debut:
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jsr HGR2
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jsr HGR ; have table gen appear on hgr page1
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bit FULLGR
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@ -293,7 +295,7 @@ display_row_sin_smc:
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adc PAGE
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sta GBASH
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lda #7
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lda #3
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sta COUNT
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store_loop:
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color_smc:
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@ -307,7 +309,7 @@ display_lookup_smc:
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; lda #$fe
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sta (GBASL),Y
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clc
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lda #$4
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lda #$8
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adc GBASH
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sta GBASH
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dec COUNT
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@ -0,0 +1,433 @@
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; PLASMAGORIA, hi-res version
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; original code by French Touch
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.include "hardware.inc"
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hposn_high=$6000
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hposn_low =$6100
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hposn_high_div8=$6200
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hposn_low_div8 =$6300
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hires_colors_even_l0=$8000
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hires_colors_odd_l0 =$8100
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hires_colors_even_l1=$8200
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hires_colors_odd_l1 =$8300
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;Table1 = $8000
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;Table2 = $8000+64
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HGR = $F3E2
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; Page Zero
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GBASL = $26
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GBASH = $27
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COMPT1 = $30
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COMPT2 = $31
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PARAM1 = $60
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PARAM2 = $61
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PARAM3 = $62
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PARAM4 = $63
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Table1 = $A0 ; 40 bytes
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Table2 = $D0 ; 40 bytes
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PAGE = $FC
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COUNT = $FD
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GBASH_SAVE = $FE
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; =============================================================================
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; ROUTINE MAIN
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; =============================================================================
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plasma_debut:
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jsr HGR ; have table gen appear on hgr page1
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bit FULLGR
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jsr build_tables
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ldx #23
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ldy #184
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div8_loop:
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lda hposn_low,Y
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sta hposn_low_div8,X
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lda hposn_high,Y
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sta hposn_high_div8,X
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dey
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dey
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dey
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dey
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dey
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dey
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dey
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dey
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dex
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bpl div8_loop
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lda #0
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sta PAGE
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; ============================================================================
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; init lores colors (inline)
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; ============================================================================
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init_hires_colors:
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;==============================================
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init_hires_colors_even_l0:
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ldx #0
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ldy #0
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; 347
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init_hires_colors_even_l0_loop:
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lda hires_colors_even_lookup_l0,X
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sta hires_colors_even_l0,Y
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iny
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sta hires_colors_even_l0,Y
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iny
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sta hires_colors_even_l0,Y
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iny
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sta hires_colors_even_l0,Y
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iny
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beq done_init_hires_colors_even_l0
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inx
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txa
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and #$f
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tax
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jmp init_hires_colors_even_l0_loop
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done_init_hires_colors_even_l0:
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;============================
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init_hires_colors_odd_l0:
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ldx #0
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ldy #0
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; 347
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init_hires_colors_odd_l0_loop:
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lda hires_colors_odd_lookup_l0,X
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sta hires_colors_odd_l0,Y
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iny
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sta hires_colors_odd_l0,Y
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iny
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sta hires_colors_odd_l0,Y
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iny
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sta hires_colors_odd_l0,Y
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iny
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beq done_init_hires_colors_odd_l0
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inx
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txa
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and #$f
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tax
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jmp init_hires_colors_odd_l0_loop
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done_init_hires_colors_odd_l0:
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;==============================================
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init_hires_colors_even_l1:
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ldx #0
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ldy #0
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; 347
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init_hires_colors_even_l1_loop:
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lda hires_colors_even_lookup_l1,X
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sta hires_colors_even_l1,Y
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iny
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sta hires_colors_even_l1,Y
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iny
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sta hires_colors_even_l1,Y
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iny
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sta hires_colors_even_l1,Y
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iny
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beq done_init_hires_colors_even_l1
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inx
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txa
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and #$f
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tax
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jmp init_hires_colors_even_l1_loop
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done_init_hires_colors_even_l1:
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;============================
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init_hires_colors_odd_l1:
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ldx #0
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ldy #0
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; 347
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init_hires_colors_odd_l1_loop:
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lda hires_colors_odd_lookup_l1,X
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sta hires_colors_odd_l1,Y
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iny
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sta hires_colors_odd_l1,Y
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iny
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sta hires_colors_odd_l1,Y
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iny
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sta hires_colors_odd_l1,Y
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iny
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beq done_init_hires_colors_odd_l1
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inx
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txa
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and #$f
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tax
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jmp init_hires_colors_odd_l1_loop
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done_init_hires_colors_odd_l1:
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; ============================================================================
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do_plasma:
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; init
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; lda #02
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; ldx #5
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;init_loop:
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; sta COMPT1,X
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; dex
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; bne init_loop
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BP3:
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; ============================================================================
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; Precalculate some values (inlined)
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; ROUTINES PRE CALCUL
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; ============================================================================
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precalc:
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lda PARAM1 ; self modify various parts
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sta pc_off1+1
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lda PARAM2
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sta pc_off2+1
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lda PARAM3
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sta pc_off3+1
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lda PARAM4
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sta pc_off4+1
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; Table1(X) = sin1(PARAM1+X)+sin2(PARAM1+X)
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; Table2(X) = sin3(PARAM3+X)+sin1(PARAM4+X)
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ldx #$28 ; 40
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pc_b1:
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pc_off1:
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lda sin1
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pc_off2:
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adc sin2
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sta Table1,X
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pc_off3:
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lda sin3
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pc_off4:
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adc sin1
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sta Table2,X
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inc pc_off1+1
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inc pc_off2+1
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inc pc_off3+1
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inc pc_off4+1
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dex
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bpl pc_b1
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inc PARAM1
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inc PARAM1
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dec PARAM2
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inc PARAM3
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dec PARAM4
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; ============================================================================
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; Display Routines
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; ROUTINES AFFICHAGES
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; ============================================================================
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; Display "Normal"
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; AFFICHAGE "NORMAL"
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display_normal:
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ldx #23 ; lines 0-23 lignes 0-23
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display_line_loop:
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lda hposn_low_div8,X
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sta GBASL
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ldy #39 ; col 0-39
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lda Table2,X ; setup base sine value for row
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sta display_row_sin_smc+1
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display_col_loop:
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lda Table1,Y ; load in column sine value
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display_row_sin_smc:
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adc #00 ; add in row value
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sta display_lookup_smc+1 ; patch in low byte of lookup
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; pick 0/1 for odd even
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lda display_lookup_smc+2
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eor #$01
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sta display_lookup_smc+2
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; lda hires_colors_even_l0 ; attention: must be aligned
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; sta color_smc+1
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lda hposn_high_div8,X
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clc
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adc PAGE
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sta GBASH
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lda #7
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sta COUNT
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store_loop:
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color_smc:
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lda display_lookup_smc+2
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eor #$02
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sta display_lookup_smc+2
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display_lookup_smc:
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lda hires_colors_even_l0 ; attention: must be aligned
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; lda #$fe
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sta (GBASL),Y
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clc
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lda #$4
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adc GBASH
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sta GBASH
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dec COUNT
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bpl store_loop
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dey
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bpl display_col_loop
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dex
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bpl display_line_loop
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; ============================================================================
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lda PAGE
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beq was_page1
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was_page2:
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bit PAGE2
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lda #0
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beq done_pageflip
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was_page1:
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bit PAGE1
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lda #$20
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done_pageflip:
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sta PAGE
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inc COMPT1
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beq display_done2
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; bne BP3
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jmp BP3
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display_done2:
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dec COMPT2
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beq display_done
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; bne BP3
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jmp BP3
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display_done:
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jmp do_plasma
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; beq do_plasma ; bra
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hires_colors_even_lookup_l0:
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.byte $00 ; black
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.byte $A2 ; 01 00 01 0 -> 1 01 00 01 0 = $A2 ; dark orange
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.byte $A2 ; 01 00 01 0 -> 1 01 00 01 0 = $A2 ; med orange
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.byte $88 ; 01 00 01 0 -> 1 01 00 01 0 = $A2 ; light orange
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.byte $AA ; 01 01 01 0 -> 1 01 01 01 0 = $AA ; solid orange
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.byte $EE ; 01 11 01 1 -> 1 11 01 11 0 = $EE ; white orange
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.byte $EE ; 01 11 01 1 -> 1 11 01 11 0 = $EE ; med white/o
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.byte $EE ; 01 11 01 1 -> 1 11 01 11 0 = $EE ; wwo
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.byte $FF ; 11 11 11 1 -> 1 11 11 11 1 = $FF ; white
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.byte $DD ; 10 11 10 1 -> 1 10 11 10 1 = $DD ; white/blue
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.byte $DD ; 10 11 10 1 -> 1 10 11 10 1 = $DD ; med white/blue
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.byte $DD ; 10 11 10 1 -> 1 10 11 10 1 = $DD ; blue/white
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.byte $D5 ; 10 10 10 1 -> 1 10 10 10 1 = $D5 ; blue
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.byte $91 ; 10 00 10 0 -> 1 00 10 00 1 = $91 ; black/blue
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.byte $91 ; 10 00 10 0 -> 1 00 10 00 1 = $91 ; med
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.byte $91 ; 10 00 10 0 -> 1 00 10 00 1 = $91 ; med/dark
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hires_colors_odd_lookup_l0:
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.byte $00 ; black
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.byte $91 ; 1 00 01 00 -> 1 00 10 00 1 = $91 ; dark orange
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.byte $91 ; 1 00 01 00 -> 1 00 10 00 1 = $91 ; med orange
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.byte $91 ; 1 00 01 00 -> 1 00 10 00 1 = $91 ; light orange
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.byte $D5 ; 1 01 01 01 -> 1 10 10 10 1 = $D5 ; solid orange
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.byte $DD ; 1 01 11 01 -> 1 10 11 10 1 = $DD ; white orange
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.byte $DD ; 1 01 11 01 -> 1 10 11 10 1 = $DD ; med white/o
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.byte $DD ; 1 01 11 01 -> 1 10 11 10 1 = $DD ; wwo
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.byte $FF ; 1 11 11 11 -> 1 11 11 11 1 = $FF ; white
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.byte $BB ; 1 10 11 10 -> 1 01 11 01 1 = $BB ; white/blue
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.byte $BB ; 1 10 11 10 -> 1 01 11 01 1 = $BB ; med white/blue
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.byte $BB ; 1 10 11 10 -> 1 01 11 01 1 = $BB ; blue/white
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.byte $AA ; 0 10 10 10 -> 1 01 01 01 0 = $AA ; blue
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.byte $A2 ; 0 10 00 10 -> 1 01 00 01 0 = $A2 ; black/blue
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.byte $A2 ; 0 10 00 10 -> 1 01 00 01 0 = $A2 ; med
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.byte $A2 ; 0 10 00 10 -> 1 01 00 01 0 = $A2 ; med/dark
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hires_colors_even_lookup_l1:
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.byte $00 ; black
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.byte $00 ; dark orange
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.byte $88 ; 00 01 00 0 -> 1 00 01 00 0 = $88 ; med orange
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.byte $AA ; 01 01 01 0 -> 1 01 01 01 0 = $AA ; light orange
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.byte $AA ; 01 01 01 0 -> 1 01 01 01 0 = $AA ; solid orange
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.byte $AA ; 01 01 01 0 -> 1 01 01 01 0 = $AA ; white orange
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.byte $BB ; 11 01 11 0 -> 1 01 11 01 1 = $BB ; med white/o
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.byte $FF ; 11 11 11 1 -> 1 11 11 11 1 = $FF ; wwo
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.byte $FF ; 11 11 11 1 -> 1 11 11 11 1 = $FF ; white
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.byte $FF ; 11 11 11 1 -> 1 11 11 11 1 = $FF ; white/blue
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.byte $F7 ; 11 10 11 1 -> 1 11 10 11 1 = $F7 ; med white/blue
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.byte $D5 ; 10 10 10 1 -> 1 10 10 10 1 = $D5 ; blue/white
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.byte $D5 ; 10 10 10 1 -> 1 10 10 10 1 = $D5 ; blue
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.byte $D5 ; 10 10 10 1 -> 1 10 10 10 1 = $D5 ; black/blue
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.byte $C4 ; 00 10 00 1 -> 1 10 00 10 0 = $C4 ; med
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.byte $00 ; med/dark
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hires_colors_odd_lookup_l1:
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.byte $00 ; black
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.byte $00 ; dark orange
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.byte $91 ; 1 00 01 00 -> 1 00 10 00 1 = $91 ; med orange
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.byte $D5 ; 1 01 01 01 -> 1 10 10 10 1 = $D5 ; light orange
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.byte $D5 ; 1 01 01 01 -> 1 10 10 10 1 = $D5 ; solid orange
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.byte $D5 ; 1 01 01 01 -> 1 10 10 10 1 = $D5 ; white orange
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.byte $F7 ; 1 11 01 11 -> 1 11 10 11 1 = $F7 ; med white/o
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.byte $FF ; 1 11 11 11 -> 1 11 11 11 1 = $FF ; wwo
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.byte $FF ; 1 11 11 11 -> 1 11 11 11 1 = $FF ; white
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.byte $FF ; 1 11 11 11 -> 1 11 11 11 1 = $FF ; white/blue
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.byte $EE ; 0 11 10 11 -> 1 11 01 11 0 = $EE ; med white/blue
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.byte $AA ; 0 10 10 10 -> 1 01 01 01 0 = $AA ; blue/white
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.byte $AA ; 0 10 10 10 -> 1 01 01 01 0 = $AA ; blue
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.byte $AA ; 0 10 10 10 -> 1 01 01 01 0 = $AA ; black/blue
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.byte $A2 ; 0 10 00 10 -> 1 01 00 01 0 = $A2 ; med
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.byte $00 ; med/dark
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.include "hgr_table.s"
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.align 256
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sin1:
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.incbin "tables"
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sin2=sin1+256
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sin3=sin2+256
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