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https://github.com/a2-4am/4cade.git
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shave some cycles
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4am
parent
bfe84c5128
commit
5336c78acb
@ -5,12 +5,22 @@
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!to "build/FX/DHGR.SOFT.DIAG",plain
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*=$6000
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pass = $fb
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y = $fc
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row = $fd
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col = $fe
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counter = $ff
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y = $9C
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row = $9D
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col = $9E
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counter = $9F
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zpcopymasks1 = $A0
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zpcopymasks2 = $A8
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zpcopymasks3 = $B0
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zpcopymasks4 = $B8
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zpcopymasks5 = $C0
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zpcopymasks6 = $C8
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zpcopymasks1_aux = $D0
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zpcopymasks2_aux = $D8
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zpcopymasks3_aux = $E0
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zpcopymasks4_aux = $E8
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zpcopymasks5_aux = $F0
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zpcopymasks6_aux = $F8
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hgrlo = $0200 ; [$C0 bytes, main memory only]
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hgr1hi = $0300 ; [$C0 bytes, main memory only]
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@ -23,12 +33,17 @@ hgr1hi = $0300 ; [$C0 bytes, main memory only]
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sta $3d
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}
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; .copymask must be in zero page and must be the exact address
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; (it is not indexed by X)
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!macro COPY_BIT_BY .src1, .dest1, .copymask {
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lda <.copymask
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beq +
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lda (.src1),y
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eor (.dest1),y ; merge source and destination bits
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and .copymask ; isolate the bits to replace, zero the rest
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and <.copymask ; isolate the bits to replace, zero the rest
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eor (.dest1),y ; unmerge source and destination bits, leaves 'to keep' destination bits intact
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sta (.dest1),y ; write the result
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+
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}
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!source "src/fx/macros.a"
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@ -36,13 +51,11 @@ hgr1hi = $0300 ; [$C0 bytes, main memory only]
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+COPY_SELF_TO_AUXMEM
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sta $C005
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ldx #48
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- lda copymasks1_aux-1, x
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sta copymasks1-1, x
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ldx #$60
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- lda copymasks1-1, x
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sta zpcopymasks1-1, x
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dex
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bne -
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sta $C004
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+BUILD_HGR_LOOKUP_TABLES_X_IS_ALREADY_0 hgrlo, hgr1hi
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@ -70,16 +83,12 @@ RowLoop
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eor #$60
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sta $3d
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lda #2
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sta pass
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PassLoop
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ldy y
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+IS_Y_OFFSCREEN
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+LBCS @block2
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clc
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!for i, 0, 7 {
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+COPY_BIT_BY $3c, $26, copymasks1+i
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+COPY_BIT_BY $3c, $26, zpcopymasks1+i
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!if i < 7 {
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+HGR_INC_WITHIN_BLOCK
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}
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@ -90,9 +99,8 @@ PassLoop
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+IS_Y_OFFSCREEN
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+LBCS @block3
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clc
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!for i, 0, 7 {
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+COPY_BIT_BY $3c, $26, copymasks2+i
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+COPY_BIT_BY $3c, $26, zpcopymasks2+i
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!if i < 7 {
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+HGR_INC_WITHIN_BLOCK
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}
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@ -103,9 +111,8 @@ PassLoop
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+IS_Y_OFFSCREEN
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+LBCS @block4
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clc
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!for i, 0, 7 {
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+COPY_BIT_BY $3c, $26, copymasks3+i
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+COPY_BIT_BY $3c, $26, zpcopymasks3+i
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!if i < 7 {
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+HGR_INC_WITHIN_BLOCK
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}
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@ -116,9 +123,8 @@ PassLoop
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+IS_Y_OFFSCREEN
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+LBCS @block5
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clc
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!for i, 0, 7 {
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+COPY_BIT_BY $3c, $26, copymasks4+i
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+COPY_BIT_BY $3c, $26, zpcopymasks4+i
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!if i < 7 {
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+HGR_INC_WITHIN_BLOCK
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}
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@ -129,9 +135,8 @@ PassLoop
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+IS_Y_OFFSCREEN
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+LBCS @block6
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clc
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!for i, 0, 7 {
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+COPY_BIT_BY $3c, $26, copymasks5+i
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+COPY_BIT_BY $3c, $26, zpcopymasks5+i
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!if i < 7 {
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+HGR_INC_WITHIN_BLOCK
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}
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@ -142,9 +147,8 @@ PassLoop
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+IS_Y_OFFSCREEN
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+LBCS @block7
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clc
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!for i, 0, 7 {
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+COPY_BIT_BY $3c, $26, copymasks6+i
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+COPY_BIT_BY $3c, $26, zpcopymasks6+i
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!if i < 7 {
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+HGR_INC_WITHIN_BLOCK
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}
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@ -155,7 +159,6 @@ PassLoop
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+IS_Y_OFFSCREEN
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+LBCS @nextrow
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clc
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!for i, 0, 7 {
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lda ($3c),y
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sta ($26),y
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@ -167,8 +170,92 @@ PassLoop
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@nextrow
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sta $C003
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sta $C005
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dec pass
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+LBNE PassLoop
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ldy y
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+IS_Y_OFFSCREEN
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+LBCS @block2_aux
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!for i, 0, 7 {
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+COPY_BIT_BY $3c, $26, zpcopymasks1_aux+i
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!if i < 7 {
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+HGR_INC_WITHIN_BLOCK
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}
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}
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+RESET_HGR_CALC_BY_7
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@block2_aux
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iny
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+IS_Y_OFFSCREEN
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+LBCS @block3_aux
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!for i, 0, 7 {
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+COPY_BIT_BY $3c, $26, zpcopymasks2_aux+i
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!if i < 7 {
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+HGR_INC_WITHIN_BLOCK
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}
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}
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+RESET_HGR_CALC_BY_7
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@block3_aux
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iny
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+IS_Y_OFFSCREEN
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+LBCS @block4_aux
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!for i, 0, 7 {
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+COPY_BIT_BY $3c, $26, zpcopymasks3_aux+i
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!if i < 7 {
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+HGR_INC_WITHIN_BLOCK
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}
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}
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+RESET_HGR_CALC_BY_7
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@block4_aux
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iny
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+IS_Y_OFFSCREEN
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+LBCS @block5_aux
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!for i, 0, 7 {
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+COPY_BIT_BY $3c, $26, zpcopymasks4_aux+i
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!if i < 7 {
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+HGR_INC_WITHIN_BLOCK
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}
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}
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+RESET_HGR_CALC_BY_7
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@block5_aux
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iny
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+IS_Y_OFFSCREEN
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+LBCS @block6_aux
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!for i, 0, 7 {
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+COPY_BIT_BY $3c, $26, zpcopymasks5_aux+i
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!if i < 7 {
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+HGR_INC_WITHIN_BLOCK
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}
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}
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+RESET_HGR_CALC_BY_7
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@block6_aux
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iny
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+IS_Y_OFFSCREEN
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+LBCS @block7_aux
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!for i, 0, 7 {
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+COPY_BIT_BY $3c, $26, zpcopymasks6_aux+i
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!if i < 7 {
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+HGR_INC_WITHIN_BLOCK
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}
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}
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+RESET_HGR_CALC_BY_7
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@block7_aux
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iny
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+IS_Y_OFFSCREEN
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+LBCS @nextrow_aux
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!for i, 0, 7 {
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lda ($3c),y
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sta ($26),y
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!if i < 7 {
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+HGR_INC_WITHIN_BLOCK
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}
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}
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@nextrow_aux
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sta $C002
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sta $C004
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ldy y
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