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tfv: change order of multiply results

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this might allow slight optimization later
This commit is contained in:
Vince Weaver 2017-11-30 00:18:14 -05:00
parent d3a054b98b
commit 8155ff8408
2 changed files with 21 additions and 21 deletions
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32
tfv/tfv_flying.s
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@ -582,8 +582,8 @@ update_z_factor:
sec ; don't reuse old values ; 2
jsr multiply ; 6
sta FACTOR_I ; 3
stx FACTOR_F ; 3
stx FACTOR_I ; 3
sta FACTOR_F ; 3
rts ; 6
;===========
@ -714,8 +714,8 @@ spacez_shifted:
sta NUM2L ; 3
sec ; don't reuse previous settings ; 2
jsr multiply ; 6
sta DISTANCE_I ; 2
stx DISTANCE_F ; 2
stx DISTANCE_I ; 2
sta DISTANCE_F ; 2
;==========
; 27
@ -747,8 +747,8 @@ spacez_shifted:
; DX_I:DX_F already set in NUM2H:NUM2L
clc ; reuse HORIZ_SCALE in NUM1 ; 2
jsr multiply ; 6
sta DX_I ; 3
stx DX_F ; 3
stx DX_I ; 3
sta DX_F ; 3
;==========
; 14
@ -776,8 +776,8 @@ spacez_shifted:
; DY_I:DY_F already in NUM2H:NUM2L
clc ; reuse horiz_scale in num1 ; 2
jsr multiply ; 6
sta DY_I ; 3
stx DY_F ; 3
stx DY_I ; 3
sta DY_F ; 3
;==========
; 14
@ -828,8 +828,8 @@ spacez_shifted:
; NUM2H:NUM2L already set above
sec ; don't reuse previous NUM1 ; 2
jsr multiply ; 6
sta SPACEX_I ; 3
stx SPACEX_F ; 3
stx SPACEX_I ; 3
sta SPACEX_F ; 3
;==========
; 26
@ -871,8 +871,8 @@ spacez_shifted:
; sta NUM2L ;
sec ; 2
jsr multiply ; 6
sta SPACEY_I ; 3
stx SPACEY_F ; 3
stx SPACEY_I ; 3
sta SPACEY_F ; 3
;==========
; 26
@ -898,8 +898,8 @@ spacez_shifted:
sta NUM2L ; 3
sec ; 2
jsr multiply ; 6
; sta TEMP_I ;
; stx TEMP_F ;
; stx TEMP_I ;
; sta TEMP_F ;
;==========
; 40
@ -927,8 +927,8 @@ spacez_shifted:
sta dyf_label+1 ; for self modify ; 4
clc ; reuse LOWRES_HALF_I from last time ; 2
jsr multiply ; 6
; sta TEMP_I ;
; stx TEMP_F ;
; stx TEMP_I ;
; sta TEMP_F ;
;==========
; 28

10
tfv/tfv_multiply.s
View File

@ -340,10 +340,10 @@ x_positive:
; 10
y_positive:
lda RESULT+2 ; *z_i=product[2]; ; 3
ldx RESULT+1 ; *z_f=product[1]; ; 3
ldx RESULT+2 ; *z_i=product[2]; ; 3
lda RESULT+1 ; *z_f=product[1]; ; 3
rts ; 12
rts ; 6
;==========
; 12