Stacken/c64-livecoding
6
0
Fork 0
Code Issues 1 Pull requests Projects Releases Packages Wiki Activity Actions

reduse instructions in circle draw

Browse source
This commit is contained in:
hugova 2025-07-10 00:45:50 +02:00
parent fbb7c395e4
commit 4916678549
2 changed files with 12 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
wip-hugo/routines/circle/circle.s
View file

@ -55,8 +55,7 @@ draw_upper_px_in_circle:
LDA btp_mem_pos + 1
STA btp_mem_pos_qbb + 1
STA btp_mem_pos_qab + 1
LDA byte_to_paint
STA byte_to_paint_qca
STY Y_qbb
@ -76,6 +75,7 @@ draw_left_px_in_circle:
LDA btp_mem_pos + 1
STA btp_mem_pos_qca + 1
STA btp_mem_pos_qba + 1
LDA byte_to_paint
STA byte_to_paint_qca
@ -124,7 +124,8 @@ draw_right_px_in_circle:
STY Y_qda
STY Y_qaa
while_x_bigger_then_y:
LDX #$08
while_x_bigger_then_y: ; X=8 always expected
draw_qaa:
LDY Y_qaa
@ -180,9 +181,8 @@ qaa_y_underflow:
qaa_y_end:
qda_y:
INC Y_qda
LDA Y_qda
CMP #$08
BCC qda_y_end
CPX Y_qda
BNE qda_y_end
qda_y_overflow:
Add_16 btp_mem_pos_qda, btp_mem_pos_qda + 1, #$3f, #$01,! ;+319 + C
Add_16 btp_mem_pos_qca, btp_mem_pos_qca + 1, #$40, #$01,! ;+320
@ -203,8 +203,8 @@ qcb_x:
BCC qcb_x_end
qcb_x_overflow:
INC byte_to_paint_qcb
LDA #$01
STA byte_to_paint_qcb
;LDA #$01
;STA byte_to_paint_qcb
Sub_16 btp_mem_pos_qcb, btp_mem_pos_qcb + 1, #$08, #$00,!
Sub_16 btp_mem_pos_qbb, btp_mem_pos_qbb + 1, #$08, #$00,!
qcb_x_end:
@ -260,9 +260,8 @@ qdb_y_end:
qbb_y:
INC Y_qbb
LDA Y_qbb
CMP #$08
BCC qbb_y_end
CPX Y_qbb ; Is Y_qbb ==8 ?
BNE qbb_y_end
qbb_y_overflow:
Add_16 btp_mem_pos_qbb, btp_mem_pos_qbb + 1, #$3f, #$01, ! ;+320

4
wip-hugo/source.s
View file

@ -10,9 +10,9 @@
;.include "routines/arithmatic/mult_test.s"
;.include "routines/arithmatic/div_test.s"
;.include "routines/circle/circle_test.s"
.include "routines/circle/circle_test.s"
;.include "routines/circle/circle_test_size.s"
.include "routines/circle/circle_test_position.s"
;.include "routines/circle/circle_test_position.s"
;.include "routines/line/line_test.s"
;.include "routines/text/char_draw_test.s"
;.include "routines/pixel/pixel_test.s"