Apple-2-SW/dos33fsprogs
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bubble: more code comments

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Vince Weaver 2024-01-04 12:43:16 -05:00
parent 02d20faf82
commit d75f8e43f3
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graphics/hgr/bubble/bubble.s
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@ -4,14 +4,17 @@
; based roughly on the BASIC code posted on the pouet forum
; original effect by yuruyrau on twitter
; original implementation = 612 bytes
; original, unoptimized implementation = 612 bytes
; fast version = 2152 bytes (could probably fit in 2k if we generate SINE table)
; 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
; hand-optimized: $A616 = 42518 cycles = max ~22fps
; final version faster, only clears the 128x128 part of the screen we use
; 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