historicalsource
/
nba-jam-tournament-edition
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
nba-jam-tournament-edition/PAL.ASM

1282 lines
22 KiB
NASM
Executable File
Raw Permalink Blame History

This file contains invisible Unicode characters!

This file contains invisible Unicode characters that may be processed differently from what appears below. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to reveal hidden characters.

**************************************************************
*
* Software: ?, Shawn Liptak and Mark Turmell
* Initiated: 4/13/89 (palstuff)
*
* Modified: Shawn Liptak, 7/23/91 -New FADEIN/OUT (Total carnage)
* Shawn Liptak, 7/28/91 -Merged with fbstuff
* Shawn Liptak, 8/12/91 -PAL_TOWHT/PAL_FMWHT
* Shawn Liptak, 8/21/91 -Merged pall & palstuff
* Shawn Liptak, 9/13/91 -Clean up!
* Shawn Liptak, 9/17/91 -New PAL struct
* Shawn Liptak, 11/19/91 -Improved GETxPAL with CLNPAL
* Shawn Liptak, 2/20/92 -Basketball cleanup
* Shawn Liptak, 4/29/92 -Conditional bgndpal assembly
*
* COPYRIGHT (C) 1992 WILLIAMS ELECTRONICS GAMES, INC.
*
*.Last mod - 11/18/92 20:30
**************************************************************
.title "palette allocator and fader control"
.file "pal.asm"
.width 132
.option b,d,l,t
.mnolist
.include "mproc.equ"
.include "disp.equ"
.include "sys.equ"
.include "gsp.equ"
.include "bgndtbl.glo"
.include "imgtbl.glo"
.include "game.equ"
.include "shawn.hdr"
;refs
.ref IRQSKYE
;defs
;equates
FPALNUM .equ 8
FPALSZ .equ 256*16
;ram
.bss fade_start,16
.bss fade_end,16
.bss fade_inc,16
.bss fade_list,32 ;list of palettes not to fade
BSSX PALRAM ,0 ;Palette allocation ram
BSSX PALFRAM ,PALRSIZ*NMFPAL
BSSX PALBRAM ,PALRSIZ*NMBPAL
BSSX PALTRAM ,PALTSIZ*NUMPALT
BSSX FADERAM ,FPALSZ*NMFPAL ;Fade mem for palettes
BSSX palfmin ,16
.bss irqskyeo,16 ;Orignal autoerase color
morfpal1 equ FADERAM+0*16*64
morfpal2 equ FADERAM+1*16*64
morfpal3 equ FADERAM+2*16*64
morfpal4 equ FADERAM+3*16*64
morfpal5 equ FADERAM+4*16*64
morfpal6 equ FADERAM+5*16*64
morfpal7 equ FADERAM+6*16*64
morfpal8 equ FADERAM+7*16*64
morfpal9 equ FADERAM+8*16*64
morfpal10 equ FADERAM+9*16*64
morfpal11 equ FADERAM+10*16*64
.def morfpal1,morfpal2
.def morfpal3,morfpal4
.def morfpal5,morfpal6
.def morfpal7,morfpal8
.def morfpal9,morfpal10
.def morfpal11
.text
********************************
* Note: Scratch = A0-A1,A14,B0-B1
#*******************************
* Clear out palette allocation and xfer ram
* Trashes scratch
SUBR pal_init
movi PALRAM,a0 ;*Pal list
movi PALRSIZ*NUMPAL/16,b0 ;# of words
clr a1
#l1 move a1,*a0+
dsj b0,#l1
movi PALTRAM,a0 ;*xfer ram
movi PALTSIZ*NUMPALT/16,b0 ;# of words
#l2 move a1,*a0+
dsj b0,#l2
rets
#*******************************
* Cleanup unused palettes
* Trashes A1,A14,B0-B1
SUBR pal_clean
PUSH a0,a2,a3,a4
movi PALRAM+PALRSIZ,a2 ;Skip 1st pal
;Turmell
movi NUMPAL-1,a3 ;Chk all pals
movi >0101,a4 ;2nd PAL #
#lp move @OBJLST,a0,L
jrz cp30 ;No objs, chk backgnd
cp20 move *a0(OPAL),a14
cmp a14,a4
jreq cp80 ;Used? Chk next
move *a0,a0,L
jrnz cp20
cp30 move @BAKLST,a0,L ;Check in bgnd list
jrz cp60 ;No objects, clean it out
cp50 move *a0(OPAL),a14
cmp a14,a4
jreq cp80 ;Used? Chk next
move *a0,a0,L
jrnz cp50
cp60
; move *a2,a0,L
; cmpi WARPP,a0
; jrne cp70 ;Not warp pal?
;
; movi CYCPID,a0
; movi -1,a1
; calla EXISTP
; move a0,a0
; jrnz cp80 ;Found cycler?
cp70 clr a0 ;Palette not used, free it
move a0,*a2,L
cp80 addi >0101,a4 ;Next pal
.if PAL64
btst 4,a4
jrz cp90
addi >3030,a4
sext a4 ;For compare
.endif
cp90 addk PALRSIZ,a2
dsj a3,#lp
PULL a0,a2,a3,a4
rets
#*******************************
* Find the color map # to which the given palette is assigned
* A0=*Pallette
* >A0=PAL # (DMA format) or 0 (Z)
* Trashes scratch
SUBR pal_find
movi PALRAM,a1
;Turmell
movi NUMPAL,b0
#lp move *a1+,a14,L ;Get * palette
cmp a0,a14
jreq #ok ;Found?
dsj b0,#lp
clr a0 ;Set Z
rets
;Turmell
#ok subi NUMPAL,b0 ;Compute pal #
neg b0
move b0,a1
.if PAL64
movk >f,a14
and a1,a14 ;A14=4 low bits
srl 4,a1 ;Move B4/B5 to B6/B7
sll 6,a1
add a14,a1
.endif
move a1,a0 ;Return pal #
sll 8,a1
add a1,a0
addk 1,a1 ;Clr Z (OK)
rets
#*******************************
* Get a foreground palette
* A0=*Palette
*Rets:
* A0=Color map allocated (0000-cfcf)
* Z set if no palette free
* Trashes scratch
SUBR pal_getf
PUSH a2,a3
movi PALRAM,a1 ;>Check if palette already exists
;Turmell
movi NUMPAL,a3
gfp4 move *a1+,a2,L ;Get *palette
cmp a0,a2
jreq getpn ;Already in color ram?
dsj a3,gfp4
movi PALFRAM,a1 ;>Check for a spare palette
;Turmell
movi NMFPAL,a3
gfp8 move *a1+,a2,L
jrz getfp ;Palette empty? Grab it
dsj a3,gfp8
.if DEBUG
; LOCKUP
; eint
.endif
callr pal_clean
movi PALFRAM,a1 ;>Check for a spare palette
;Turmell
movi NMFPAL,a3
gfp20 move *a1+,a2,L
jrz getfp ;Palette empty? Grab it
dsj a3,gfp20
#err PULL a2,a3
clr a0 ;Set Z error
rets
********************************
* Get a background palette
* A0=*Palette
*Rets:
* A0=Color map allocated (0000-cfcf)
* Z set if no palette free
* Trashes scratch
.if NMBPAL
SUBR pal_getb
PUSH a2,a3
movi PALRAM,a1 ;>Check if palette already exists
;Turmell
movi NUMPAL,a3
gbp4 move *a1+,a2,L ;Get *palette
cmp a0,a2
jreq getpn ;Already in color ram?
dsj a3,gbp4
movi PALBRAM,a1 ;>Check for a spare palette
movk NMBPAL,a3
gbp8 move *a1+,a2,L
jrz gbp30 ;Palette empty? Grab it
dsj a3,gbp8
.if DEBUG
LOCKUP
eint
.endif
callr pal_clean
movi PALBRAM,a1 ;>Check for a spare palette
movk NMBPAL,a3
gbp10 move *a1+,a2,L
jrz gbp30 ;Palette empty? Grab it
dsj a3,gbp10
jruc #err
getfp addk NMBPAL,a3 ;>Setup your new palette
.else
getfp
.endif
gbp30 PUSH a0,a1
move a3,a1 ;Palette #
;Turmell
subi NUMPAL,a1 ;Compute palette #
neg a1
.if PAL64
movk >f,a2
and a1,a2 ;A2=4 low bits
srl 4,a1 ;Move B4/B5 to B6/B7
sll 6,a1
add a2,a1
.endif
sll 8,a1 ;*256
move *a0+,a2 ;Get # colors in pal
callr pal_set ;Setup pal transfer
mmfm sp,a0,a1
jrz #err ;Failed to get transfer?
move a0,-*a1,L ;Stuff palette *
;Turmell
getpn subi NUMPAL,a3 ;Compute palette #
neg a3
.if PAL64
movk >f,a1
and a3,a1 ;A2=4 low bits
srl 4,a3 ;Move B4/B5 to B6/B7
sll 6,a3
add a1,a3
.endif
move a3,a0 ;Return palette #
sll 8,a3
add a3,a0 ;Double it up for DMA
PULL a2,a3
addk 1,a1 ;Clr Z for OK
rets
#*******************************
* Setup palette transfer
* A0=* to palette color data
* A1=Bit 8-15 destination palette | Bit 0-7 start color
* A2=Color count (0-255)
* Rets: Z set if unable to setup transfer
* Trashes scratch
SUBR pal_set
move a3,b1
movi PALTRAM,a3
movi NUMPALT,b0 ;# of palette transfers allowed
#lp move *a3+,a14
jrz #set ;Cell free?
addi PALTSIZ-16,a3
dsj b0,#lp
.if DEBUG
LOCKUP
eint
.endif
jruc #x
#set move a0,*a3+,L ;Set PALSRC
move a1,*a3 ;Set PALDEST
move a2,*a3(-48) ;Set PLDCNT (Must set last)
#x move b1,a3
move b0,b0 ;Return Z (error) or NZ (ok)
rets
#*******************************
* Transfer palette data
* Called during vblank
* Looks through PALTRAM for transfers
* Trashes A0-A7
SUBR pal_transfer
movi PALTRAM,a0
movi NUMPALT,a3 ;# OF PALETTES
clr a6
movi COLRAM,a7
#lp move *a0,a4 ;Get count
jrz #x ;End?
move a6,*a0+ ;Clear out tranfer count
move *a0+,a1,L ;Source address
move *a0+,a2 ;Destination palette
zext a2
.if PAL64
move a2,a5 ;Convert to color ram address
sll 32-12,a5
srl 32-12-4,a5 ;*16
srl 14,a2 ;Move B14/15 to B6/7
sll 6+4,a2
add a5,a2
.else
sll 4,a2 ;*16 for word addr
.endif
add a7,a2 ;+color ram base address
sll 32-9,a4 ;Make 0-511
srl 32-9+1,a4
jrnc #1 ;Even data count?
move *a1+,*a2+
#1 srl 1,a4 ;/2 data count
jrnc #2 ;Even?
move *a1+,*a2+,L
#2 srl 1,a4 ;/2 data count
jrnc #3 ;Even?
move *a1+,*a2+,L
move *a1+,*a2+,L
#3 jrz #5 ;Cnt=0?
#4 move *a1+,*a2+,L
move *a1+,*a2+,L
move *a1+,*a2+,L
move *a1+,*a2+,L
dsj a4,#4
#5 dsj a3,#lp
#x rets
#*******************************
* Black out selected palette
* A0=* palette to black out
* Trashes scratch
SUBR pal_blacken
PUSH a2
callr pal_find
jrz #err
sll 8,a0
move a0,a1
movi FADERAM,a0
movk 32,b0
clr a2
#lp move a2,*a0+,L
dsj b0,#lp
movi FADERAM,a0
movi 64,a2
callr pal_set
#err PULL a2
rets
********************************
* PUMP_RED PROCESS, CYCLE NUCLEAR REACTORS
;PUMP_RED
; SLEEPK 18H
; MOVI REACTR,A0
; MOVE A0,@KPBASE,L
; CALLR find_pal
; JRZ REDOUT
; SLL 8,A0
; MOVE A0,A11 ;NEEDED LATER FOR pal_set
;
; MOVI 25,A10 ;PUMP RED A10 TIMES
; MOVI 128,A8
;REDLOOP MOVI FADERAM,A0
; ADDK 10H,A8
; CALLR DO_MULT
; SLEEPK 1
; DSJ A10,REDLOOP
;REDOUT
; MOVK 25,A10 ;PUMP RED A10 TIMES
;RED2 MOVI FADERAM,A0
; SUBI 10H,A8
; CALLR DO_MULT
; SLEEPK 1
; DSJ A10,RED2
; JRUC PUMP_RED
;
;DO_MULT
; MOVE A8,A2
; PUSH a8,a10,a11
;
; MOVE @KPBASE,A1,L ;REACTR,A1
;;PARAMS
;; A0 - DEST RAM FOR PAL
;; A1 - SRC FOR PAL
;; A2 - COLOR MULTIPLIER
;; EACH COLOR IN PALETTE WILL BE MULTIPLIED BY A2 THEN DIVIDED BY 128
;
; move *a1+,a14
; move a14,*a0+
; SLL 23,A14 ;TOP BITS OF FIELD ARE FLAGS
; SRL 23,A14 ;ONLY 9 BITS NEEDED FOR # COLORS
; MOVI >7C00,A4 ;A4 - PRE MULT MASK FOR 5 BITS OF RED
;; MOVI >03E0,A6 ;A6 - PRE MULT MASK FOR 5 BITS OF GREEN
;; MOVI >001F,A8 ;A8 - PRE MULT MASK FOR 5 BITS OF BLUE
; MOVE A4,A9
;; MOVE A6,A10
;; MOVE A8,A11
; SLL 7,A9 ; A9 - POST MULT MAX FOR 5 BITS OF RED
;; SLL 7,A10 ;A10 - POST MULT MAX FOR 5 BITS OF GREEN
;; SLL 7,A11 ;A11 - POST MULT MAX FOR 5 BITS OF BLUE
;FADELPR
; MOVE *A1+,A3,W ;A3 - RED
; MOVE A3,A5
; ANDI 03FFH,A5
;; MOVE A3,A5 ;A5 - GREEN
;; MOVE A3,A7 ;A7 - BLUE
; AND A4,A3
; CMPI 1001H,A3
; JRC REDOKR
;; AND A6,A5
;; AND A8,A7
; MPYU A2,A3
;; MPYU A2,A5
;; MPYU A2,A7
; CMP A9,A3
; JRLE REDOKR
; MOVE A9,A3
;REDOKR
;; CMP A10,A5
;; JRLE GREENOK
;; MOVE A10,A5
;;GREENOK
;; CMP A11,A7
;; JRLE BLUEOK
;; MOVE A11,A7
;;BLUEOK
; AND A9,A3
; SRL 7,A3
;; AND A10,A5
; OR A5,A3
;; OR A7,A3
;; SRL 7,A3
; MOVE A3,*A0+
; DSJS A14,FADELPR
;
;
; PULL a8,a10,a11
;
; movi FADERAM,a0 ;*Color data
; move a11,a1 ;Pal#
; move *a0+,a2 ;#Colors
; jruc pal_set
********************************
* Fade in all selected palettes from black
* A0=*Palette list to fade in (autoerase + 0-8 pals)
* A1=Fade delay in ticks
* Trashes scratch,A7,A9-A10
* If 1st entry not neg then it enables autoerase fading
SUBR pal_fadein
move a0,a9 ;A9=*Palette list
move a1,a10 ;A10=Fade delay
CREATE0 fadein
rets
fadein
move a13,a6
addi PDATA,a6
movk FPALNUM,a7
move a9,a11
move *a11+,a0,L ;!-=Autoerase color
jrn fi30
move a0,@irqskyeo ;Save color
fi20 move *a11+,a0,L ;Get * palette
jrz fi70 ;0=End
fi30 callr pal_find
jrnz fi60 ;OK?
not a0 ;Make neg (should = -256)
fi60 sll 8,a0
move a0,*a6+ ;Save palette #
dsj a7,fi20
fi70 clr a8 ;A8=Brightness
fi100 addk 8,a8
movi FADERAM,a5
move a13,a6
addi PDATA,a6
movk FPALNUM,a7
move a9,a11
move *a11,a1,L
jrn fi200
addk 32,a11
move a8,a2
callr pal_fadeae
fi200 move *a11+,a1,L
jrz fi400 ;End?
move a5,a0
move a8,a2
callr pal_fade
move a5,a0 ;*Palette colors
move *a6+,a1 ;Palette #
cmpi -256,a1 ;FF00
jreq fi230 ;Couldn't find?
move *a0+,a2 ;#Colors
callr pal_set
fi230 addi FPALSZ,a5
dsj a7,fi200
fi400 move a10,a0
calla PRCSLP
cmpi 128,a8
jrlo fi100
fi800 DIE
********************************
* Fade out all selected palettes to black
* A0=*Palette list to fade out (autoerase + 0-8 pals)
* A1=Fade delay in ticks
* If 1st entry not neg then it enables autoerase fading
SUBR pal_fadeout
clr a10
move a10,@palfmin
SUBR pal_fadeout2
move a0,a9 ;A9=*Palette list
move a1,a10 ;A10=Fade delay
CREATE0 fadeout
rets
fadeout
move a13,a6
addi PDATA,a6
movk FPALNUM,a7
move a9,a11
move *a11+,a0,L ;!-=Autoerase color
jrn fo30
move @IRQSKYE,a0 ;Save color
move a0,@irqskyeo
fo20 move *a11+,a0,L ;Get * palette
jrz fo70 ;0=End
fo30 callr pal_find
jrnz fo60
not a0 ;Make neg
fo60 sll 8,a0
move a0,*a6+ ;Save palette #
dsj a7,fo20
fo70 movi 128,a8 ;A8=Brightness
fo100 subk 8,a8
movi FADERAM,a5
move a13,a6
addi PDATA,a6
movk FPALNUM,a7
move a9,a11
move *a11+,a1,L
jrn fo220
move a8,a2
callr pal_fadeae
fo200 move *a11+,a1,L
jrz fo400
fo220 move a5,a0
move a8,a2
callr pal_fade
move a5,a0 ;*Palette colors
move *a6+,a1 ;Palette #
cmpi -256,a1 ;FF00
jrz fo250
move *a0+,a2 ;#Colors
callr pal_set
fo250 addi FPALSZ,a5
dsj a7,fo200
fo400 move a10,a0
calla PRCSLP
move @palfmin,a0
cmp a0,a8
jrgt fo100
fo800 DIE
********************************
* Fade autoerase color
SUBRP pal_fadeae ;A2=Brightness (0-128)
PUSH a3,a5,a7,a8
movi IRQSKYE,a0
movi irqskyeo,a1
movk 1,a14
jruc pf1c
********************************
* Fade a palette
* Each color in palette will be multiplied by a2 then divided by 128
* A0=*Ram for pal, A1=*Palette, A2=Brightness (0-128)
* Trashes scratch
SUBRP pal_fade
PUSH a3,a5,a7,a8
move *a1+,a14 ;# Colors
move a14,*a0+
sll 32-9,a14 ;Remove any flags
srl 32-9,a14 ;9 bits needed for # colors
pf1c movk >1f,a8 ;A8=5 bit color mask
pf100 move *a1+,a3
movk >1f,a7
and a3,a7 ;A7=Blue
srl 5,a3
movk >1f,a5
and a3,a5 ;A5=Green
srl 5,a3 ;A3=Red
mpyu a2,a3
mpyu a2,a5
mpyu a2,a7
srl 7,a3 ;/128
srl 7,a5
srl 7,a7
cmp a8,a3
jrls pfrok
move a8,a3
pfrok cmp a8,a5
jrls pfgok
move a8,a5
pfgok cmp a8,a7
jrls pfbok
move a8,a7
pfbok sll 10,a3
sll 5,a5
or a5,a3
or a7,a3
move a3,*a0+ ;Save color
dsj a14,pf100
PULL a3,a5,a7,a8
rets
**************************************************************************
* Fade palettes from black to their normal colors except for list
* A0=*List NOT to fade or 0
* Trashes scratch
SUBR pal_fadeinx
PUSH a2,a6,a7,a8,a9,a10
movk 8,a10
jruc fbf10
**************************************************************************
* Fade palettes down to black except for list
* A0=*List NOT to fade or 0
* Trashes scratch
SUBR pal_fadeoutx
PUSH a2,a6,a7,a8,a9,a10
movi -8,a10
fbf10 move a0,a6
;Start proc to fade each palette
clr a9 ;palette slot
movi PALRAM,a2 ;A2=*Palette table
fbf20 move *a2+,a8,L ;Ptr to palette
jrz fbf70
move a6,a7 ;A6=*List of palettes to skip
jrz fbf60
fbf50 move *a7+,a1,L
jrz fbf60
cmp a1,a8
jreq fbf70 ;Skip pal?
jruc fbf50
fbf60 CREATE0 fadeonep
fbf70 addk 1,a9
cmpi NUMPAL,a9
jrlt fbf20
fbfx PULL a2,a6,a7,a8,a9,a10
rets
**************************************************************************
* fadeonep - Fade one palette (Process)
*
* A8=*Palette to be faded
* A9=Palette slot # (0 to NUMPAL-1)
* A10=Add value per fade (!0)
fadeonep
.if PAL64
movk >f,a2
and a9,a2 ;A2=4 low bits
srl 4,a9 ;Move B4/B5 to B6/B7
sll 6,a9
add a2,a9
.endif
sll 8,a9 ;B8-15 dest pal, B0-7 color (0)
clr a11 ;For up fade
move a10,a10
jrgt fop60
movi 128,a11 ;For dn fade
jruc fop60
;>Set up faded pal in process data space
foplp
move a11,a2 ;A2=Color Multiplier
move a13,a0
addi PDATA,a0 ;A0=Dest Ram for Pal
move a0,a5
move a8,a1 ;A1=Src for Pal
callr pal_fade
move a5,a0 ;>Move faded palette to palram
move a9,a1
move *a0+,a2 ;Get # colors in palette
callr pal_set ;Set transfer
SLEEPK 2
fop60 add a10,a11
cmpi 128,a11
jrls foplp
SLEEPK 2 ;Wait on last pal_set
DIE
****************************************************************
* Fade palettes from white to their normal colors except for list
* A0=*List NOT to fade or 0
* A1=Do Autoerase (!0=Yes)
SUBR pal_fmwht
PUSH a2,a6,a7,a8,a9,a10
movi -1,a10
jruc ptw10
****************************************************************
* Brighten palettes to white except for list
* A0=*List NOT to fade or 0
* A1=Do Autoerase (!0=Yes)
SUBR pal_towht
PUSH a2,a6,a7,a8,a9,a10
move @IRQSKYE,a2 ;Save color
move a2,@irqskyeo
movk 1,a10
ptw10 move a0,a6
move a1,a1
jrz ptw15 ;Skip AE
CREATE0 addbrt_ae
;Start proc to fade each palette
ptw15 clr a9 ;palette slot
movi PALRAM,a2 ;A2=*Palette table
ptw20 move *a2+,a8,L ;Ptr to palette
jrz ptw70
move a6,a7 ;A6=*List of palettes to skip
jrz ptw60
ptw50 move *a7+,a1,L
jrz ptw60
cmp a1,a8
jreq ptw70 ;Skip pal?
jruc ptw50
ptw60 CREATE0 brightenonep
ptw70 addk 1,a9
cmpi NUMPAL,A9
jrlt ptw20
ptwx PULL a2,a6,a7,a8,a9,a10
rets
********************************
* Brighten one palette (Process)
* A8=*Palette to be faded
* A9=Palette slot #
* A10=Add value per loop (!0)
brightenonep
.if PAL64
movk >f,a2
and a9,a2 ;A2=4 low bits
srl 4,a9 ;Move B4/B5 to B6/B7
sll 6,a9
add a2,a9
.endif
sll 8,a9 ;B8-15 dest pal, B0-7 color (0)
clr a11 ;For up fade
move a10,a10
jrgt bop20
movk 31,a11 ;For dn fade
bop20
;Set up faded pal in process data space
boplp add a10,a11
cmpi 31,a11
jrhi bopx
move a11,a2 ;A2=Brightness
move a13,a0
addi PDATA,a0 ;A0=Dest Ram for Pal
move a0,a5
move a8,a1 ;A1=Src for Pal
callr pal_addb
move a5,a0 ;>Move faded palette to palram
move a9,a1
move *a0+,a2 ;Get # colors in palette
callr pal_set ;Set transfer
SLEEPK 3
jruc boplp
bopx SLEEPK 1 ;give last xfer a chance to go
DIE
********************************
* Change brightness of autoerase (Process)
* A10=Add value per loop (!0)
SUBR addbrt_ae
clr a11 ;For up fade
move a10,a10
jrgt abae20
movk 31,a11 ;For dn fade
abae20
abaelp add a10,a11
cmpi 31,a11
jrhi abaex
move a11,a2 ;A2=Brightness
callr addbae
SLEEPK 3
jruc abaelp
abaex DIE
********************************
* Change brightness of autoerase
* A2=Brightness (-31 to 31)
SUBRP addbae
PUSH a3,a5,a7,a8
movi IRQSKYE,a0
movi irqskyeo,a1
movk 1,a14
jruc pb1c
********************************
* Change brightness of a palette
* Each color in palette will have A2 added to its RGB
* A0=*Ram for pal, A1=*Palette, A2=Brightness (-31 to 31)
* Trashes scratch
SUBRP pal_addb
PUSH a3,a5,a7,a8
move *a1+,a14 ;# Colors
move a14,*a0+
sll 23,a14 ;Remove any flags
srl 23,a14 ;9 bits needed for # colors
pb1c movk >1f,a8 ;A8=Mask for 5 bits of color
pb100 move *a1+,a3
movk >1f,a7
and a3,a7 ;A7=Blue
srl 5,a3
movk >1f,a5
and a3,a5 ;A5=Green
srl 5,a3 ;A3=Red
add a2,a3
add a2,a5
add a2,a7
cmp a8,a3
jrls pbrok
move a8,a3
pbrok cmp a8,a5
jrls pbgok
move a8,a5
pbgok cmp a8,a7
jrls pbbok
move a8,a7
pbbok sll 10,a3
sll 5,a5
or a5,a3
or a7,a3
move a3,*a0+ ;Save color
dsj a14,pb100
PULL a3,a5,a7,a8
rets
#*****************************************************************************
*
* INPUT: a10 = * list palettes not to fade (0 terminated)
* A11=Fade increment (1-256)
*-----------------------------------------------------------------------------
SUBR fade_up
move a10,@fade_list,L
clr a0
move a0,@fade_start
movi 256,a0
move a0,@fade_end
move a11,a0 ;movk 8
move a0,@fade_inc
jruc do_fade
#*****************************************************************************
* Fade palettes down (process)
* A10=* list palettes not to fade (0 terminated)
* A11=Fade increment (1-256)
*-----------------------------------------------------------------------------
SUBR fade_down
move a10,@fade_list,L
movi 256,a0
move a0,@fade_start
clr a0
move a0,@fade_end
move a11,@fade_inc
jruc do_fade
#*****************************************************************************
*
* INPUT: a10 = * list palettes not to fade (0 terminated)
*
*-----------------------------------------------------------------------------
SUBR fade_up_half
move a10,@fade_list,L
movi 128,a0
move a0,@fade_start
movi 256,a0
move a0,@fade_end
movk 16,a0
move a0,@fade_inc
jruc do_fade
#*****************************************************************************
*
* INPUT: a10 = * list palettes not to fade (0 terminated)
*
*-----------------------------------------------------------------------------
SUBR fade_down_half
move a10,@fade_list,L
movi 256,a0
move a0,@fade_start
movi 128,a0
move a0,@fade_end
movk 16,a0
move a0,@fade_inc
jruc do_fade
#*****************************************************************************
SUBRP do_fade
move @IRQSKYE,a0
move a0,@irqskyeo
move @fade_start,a10
#fade_loop
move @irqskyeo,a11
movk >1f,a7
and a11,a7 ;A7 = Blue
srl 5,a11
movk >1f,a9
and a11,a9 ;A9 = Green
srl 5,a11 ;A11 = Red
mpyu a10,a7 ; X (0 - 32)
srl 8,a7 ;/256
mpyu a10,a9
srl 8,a9
mpyu a10,a11
srl 8,a11
sll 10,a11 ;red
or a11,a7
sll 5,a9 ;green
or a9,a7
move a7,@IRQSKYE
movi FADERAM,a4
movi PALRAM,a1
movi NUMPAL,a3
#next_pal
move *a1+,a2,L ;Get *palette
jrz #empty_pal
move @fade_list,a7,L
jrz #skip_check
jruc #start
#next_check
cmp a9,a2
jreq #done ;skip this palette
#start
move *a7+,a9,L
jrnz #next_check
#skip_check
move *a2+,a5 ;Number colours in palette
move a5,a8
move a4,a6
#copy_loop
move *a2+,a11
movk >1f,a7
and a11,a7 ;A7 = Blue
srl 5,a11
movk >1f,a9
and a11,a9 ;A9 = Green
srl 5,a11 ;A11 = Red
mpyu a10,a7 ; X (0 - 32)
srl 8,a7 ;/256
mpyu a10,a9
srl 8,a9
mpyu a10,a11
srl 8,a11
sll 10,a11 ;red
or a11,a7
sll 5,a9 ;green
or a9,a7
move a7,*a6+ ;1 word
dsj a8,#copy_loop
PUSH a1,a2
move a4,a0 ;* colour data
movi NUMPAL,a1
sub a3,a1 ;dest palette ( 0 - NUMPAL-1 )
sll 8,a1 ;
move a5,a2 ;# colours
callr pal_set
PULL a1,a2
#done
#empty_pal
addi FPALSZ,a4
dsj a3,#next_pal
SLEEPK 1
move @fade_start,a0
move @fade_end,a1
cmp a0,a1
jrhi #fading_up
;fading_down
move @fade_inc,a0 ;signed inc
sub a0,a10
cmp a1,a10
jrge #fade_loop
DIE
#fading_up
move @fade_inc,a0 ;signed inc
add a0,a10
cmp a1,a10
jrls #fade_loop
DIE
#*****************************************************************************
.end

Reference in New Issue View Git Blame Copy Permalink