Apple-2-SW/dos33fsprogs
1
0
Fork 0
mirror of https://github.com/deater/dos33fsprogs.git synced 2025-02-22 14:29:00 +00:00
Code Issues Projects Releases Wiki Activity

bubble: clean up code comments a bit

Browse Source
This commit is contained in:
Vince Weaver 2024-01-04 12:40:13 -05:00
parent 46c79e587e
commit 02d20faf82
1 changed files with 25 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
graphics/hgr/bubble/bubble.s
View File

@ -1,15 +1,23 @@
; bubble universe -- Apple II Hires
; original = 612 bytes
; clear screen:
; bkgnd0 = $44198 = 278936 cycles = max ~4fps
; new: $A616 = 42518 = max ~22fps
; hplot
; hplot0 = ($14E-$15C) $14E = 334 * 1024 = 342016 = max ~3fps
; lookup = 46 * 1024 = 47104 = max ~21fps
; by Vince `deater` Weaver
; based roughly on the BASIC code posted on the pouet forum
; original effect by yuruyrau on twitter
; original implementation = 612 bytes
; Fast hi-res pixel notes (Apple II hi-res graphics pain is
; a bit much to get into here)
; clear screen routine:
; ROM built-in: BKGND0 = $44198 = 278936 cycles = max ~4fps
; hand-optimized: $A616 = 42518 cycles = max ~22fps
; hplot (plot pixel) routine, plot 32x32=1024 points
; ROM HPLOT0 = ($14E-$15C) $14E = 334 * 1024 = 342016 = max ~3fps
; hand-optimized = 46 * 1024 = 47104 = max ~21fps
; after fast graphics
; after fast graphics, for I=32,J=32
; D7E77(??) = 884343 = 1.1fps
; DD06E = (made J countdown, why longer?)
; DB584 = destructive U when plotting
@ -30,13 +38,13 @@
; 5CFBE = move TL/TH out of zero page
; 5C353 = put UL in Y = ~2.6fps
; NUM=24 35CD3 = ~4.5fps
; NUM=16 1A2DD = ~9 fps
; NUM (I,J)=24 35CD3 = ~4.5fps
; NUM (I,J)=16 1A2DD = ~9 fps
; soft-switches
KEYPRESS = $C000
KEYRESET = $C010
;KEYPRESS = $C000
;KEYRESET = $C010
PAGE1 = $C054
PAGE2 = $C055
@ -46,10 +54,10 @@ BKGND0 = $F3F4 ; clear current page to A
HGR2 = $F3D8 ; set hires page2 and clear $4000-$5fff
HGR = $F3E2 ; set hires page1 and clear $2000-$3fff
HPLOT0 = $F457 ; plot at (Y,X), (A)
HLINRL = $F530 ; line to (X,A), (Y)
HCOLOR1 = $F6F0 ; set HGR_COLOR to value in X
COLORTBL = $F6F6
WAIT = $FCA8 ; delay 1/2(26+27A+5A^2) us
;HLINRL = $F530 ; line to (X,A), (Y)
;HCOLOR1 = $F6F0 ; set HGR_COLOR to value in X
;COLORTBL = $F6F6
;WAIT = $FCA8 ; delay 1/2(26+27A+5A^2) us
; zero page
@ -122,7 +130,7 @@ next_frame:
.include "hgr_clear_part.s"
; FIXME: see value of X/Y/A after clear
; TODO: see if value of X/Y/A useful after clear
ldx #0 ; 2
stx I ; 3