mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-06-02 04:41:31 +00:00
71 lines
1.1 KiB
ArmAsm
71 lines
1.1 KiB
ArmAsm
; Tiny Tiny
|
|
|
|
; zero page locations
|
|
HGR_SHAPE = $1A
|
|
HGR_BITS = $1C
|
|
GBASL = $27
|
|
GBASH = $28
|
|
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 = $E8
|
|
HGR_SHAPE2 = $E9
|
|
HGR_COLLISIONS = $EA
|
|
HGR_ROTATION = $F9
|
|
FRAME = $FC
|
|
XPOS = $FD
|
|
YPOS = $FF
|
|
|
|
; ROM calls
|
|
HGR2 = $F3D8
|
|
HPOSN = $F411
|
|
XDRAW0 = $F65D
|
|
RESTORE = $FF3F
|
|
|
|
.zeropage
|
|
|
|
tiny_tiny:
|
|
|
|
jsr HGR2 ; Hi-res, full screen ; 3
|
|
; Y=0, A=0 after this call
|
|
|
|
; lda #40
|
|
; sta HGR_SCALE
|
|
|
|
tiny_loop:
|
|
; setup X and Y co-ords
|
|
ldy #0 ; Y always 0
|
|
ldx #140
|
|
lda #96
|
|
jsr HPOSN ; X= (y,x) Y=(a)
|
|
; saves Y/X/A to HGR_Y, HGR_X, HGR_X+1
|
|
|
|
; ldx #<shape_table ; point to our shape
|
|
; ldy #0
|
|
rot_smc:
|
|
lda #0 ; ROT=0
|
|
jsr XDRAW1 ; XDRAW 1 AT X,Y
|
|
; Both A and X are 0 at exit
|
|
|
|
inc rot_smc+1
|
|
jmp tiny_loop
|
|
|
|
shape_table:
|
|
.byte $2D,0 ; shape data
|
|
|
|
; RT RT is 00 101 101 = 2D
|