mirror of
https://github.com/deater/dos33fsprogs.git
synced 2025-01-03 18:29:53 +00:00
159 lines
2.3 KiB
ArmAsm
159 lines
2.3 KiB
ArmAsm
; Pattern Logo
|
|
|
|
; by Vince `deater` Weaver
|
|
|
|
; zero page locations
|
|
HGR_SHAPE = $1A
|
|
HGR_SHAPE2 = $1B
|
|
HGR_BITS = $1C
|
|
GBASL = $26
|
|
GBASH = $27
|
|
A5H = $45
|
|
XREG = $46
|
|
YREG = $47
|
|
; C0-CF should be clear
|
|
; D0-DF?? D0-D5 = HGR scratch?
|
|
HGR_DX = $D0 ; HGLIN
|
|
HGR_DX2 = $D1 ; HGLIN
|
|
HGR_DY = $D2 ; HGLIN
|
|
HGR_QUADRANT = $D3
|
|
HGR_E = $D4
|
|
HGR_E2 = $D5
|
|
HGR_X = $E0
|
|
HGR_X2 = $E1
|
|
HGR_Y = $E2
|
|
HGR_COLOR = $E4
|
|
HGR_HORIZ = $E5
|
|
HGR_SCALE = $E7
|
|
HGR_SHAPE_TABLE = $E8
|
|
HGR_SHAPE_TABLE2= $E9
|
|
HGR_COLLISIONS = $EA
|
|
HGR_ROTATION = $F9
|
|
FRAME = $FC
|
|
FRAMEH = $FD
|
|
XPOS = $FE
|
|
YPOS = $FF
|
|
|
|
; ROM calls
|
|
HGR2 = $F3D8
|
|
HGR = $F3E2
|
|
HPOSN = $F411
|
|
DRAW0 = $F601
|
|
XDRAW0 = $F65D
|
|
XDRAW1 = $F661
|
|
RESTORE = $FF3F
|
|
|
|
|
|
gear:
|
|
|
|
|
|
jsr HGR2 ; Hi-res, full screen ; 3
|
|
; Y=0, A=0 after this call
|
|
|
|
lda #10
|
|
sta HGR_SCALE
|
|
|
|
; A and Y are 0 here.
|
|
; X is left behind by the boot process?
|
|
|
|
sty HGR_COLLISIONS
|
|
|
|
tya
|
|
tax ; load X with 0
|
|
; ldy #0
|
|
; ldx #00
|
|
; lda #00
|
|
jsr HPOSN ; set screen position to X= (y,x) Y=(a)
|
|
; saves X,Y,A to zero page
|
|
; after Y= orig X/7
|
|
; A and X are ??
|
|
pattern_loop:
|
|
|
|
ldx #<pattern_table ; point to bottom byte of shape address
|
|
ldy #>pattern_table ; point to top byte of shape address
|
|
|
|
; ROT in A
|
|
|
|
; this will be 0 2nd time through loop, arbitrary otherwise
|
|
lda #1 ; ROT=0
|
|
jsr XDRAW0 ; XDRAW 1 AT X,Y
|
|
; Both A and X are 0 at exit
|
|
; Z flag set on exit
|
|
; Y varies
|
|
|
|
lda HGR_COLLISIONS
|
|
bne pattern_loop
|
|
|
|
oog:
|
|
|
|
lda #$7f
|
|
sta HGR_COLOR
|
|
|
|
lda #10
|
|
sta HGR_SCALE
|
|
|
|
lda #3
|
|
sta FRAME
|
|
logo_loop1:
|
|
|
|
inc xsmc+1
|
|
inc ysmc+1
|
|
|
|
jsr draw_logo
|
|
|
|
dec FRAME
|
|
bne logo_loop1
|
|
|
|
lda #$00
|
|
sta HGR_COLOR
|
|
|
|
lda #3
|
|
sta FRAME
|
|
logo_loop2:
|
|
|
|
jsr draw_logo
|
|
|
|
inc xsmc+1
|
|
inc ysmc+1
|
|
|
|
dec FRAME
|
|
bne logo_loop2
|
|
|
|
blah:
|
|
beq blah
|
|
|
|
;===============
|
|
; draw shape table logo
|
|
draw_logo:
|
|
ldy #0
|
|
xsmc:
|
|
ldx #96
|
|
ysmc:
|
|
lda #150
|
|
jsr HPOSN ; set screen position to X= (y,x) Y=(a)
|
|
|
|
|
|
ldx #<apple_table ; point to bottom byte of shape address
|
|
ldy #>apple_table ; point to top byte of shape address
|
|
|
|
; ROT in A
|
|
|
|
; this will be 0 2nd time through loop, arbitrary otherwise
|
|
lda #52 ; ROT=0
|
|
jmp DRAW0 ; XDRAW 1 AT X,Y
|
|
; Both A and X are 0 at exit
|
|
; Z flag set on exit
|
|
; Y varies
|
|
|
|
|
|
|
|
|
|
pattern_table:
|
|
.byte $04,$00
|
|
|
|
apple_table:
|
|
.byte $27,$2c,$35,$8e,$24,$2c
|
|
.byte $35,$be,$09,$24,$2c,$35,$be,$09
|
|
.byte $20,$24,$8c,$12,$2d,$3c,$37,$2e
|
|
.byte $0d,$25,$24,$4f,$39,$36,$2e,$00
|