2017-07-29 21:47:17 +00:00
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TEXTCOLOR = $e0c022
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NEWVIDEO = $e0c029
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BORDERCOLOR = $e0c034
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CLOCKCTL = $e0c034
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SHADOW = $e0c035
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STACKCTL = $e0c068
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KBD = $e0c000
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KBDSTROBE = $e0c010
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2017-07-28 22:11:25 +00:00
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COUT = $fded
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2017-08-13 22:36:12 +00:00
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VRAM = $e12000
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2017-10-19 19:59:24 +00:00
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SHADOWVRAM = $012000
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2017-09-30 00:53:05 +00:00
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VRAMBANK = $e10000
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2017-10-19 19:59:24 +00:00
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SHADOWVRAMBANK = $010000
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2017-10-02 00:36:09 +00:00
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PRODOS = $bf00 ; MLI entry point
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PRODOSRETURN = $300 ; Indirect jump to get back to ProDOS from any bank
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2017-07-28 22:11:25 +00:00
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; Zero page locations we use (unused by Monitor, Applesoft, or ProDOS)
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PARAM0 = $06
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PARAM1 = $07
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PARAM2 = $08
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PARAM3 = $09
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PARAML0 = $06 ; 16-bit versions of params
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PARAML1 = $08
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SCRATCH0 = $19
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SCRATCH1 = $1a
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SCRATCHL = $19 ; 16-bit version of scratch
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2017-09-13 13:53:40 +00:00
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SCRATCHL2 = $67 ; Second 16-bit scratch
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2017-07-30 18:54:37 +00:00
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PARAM24 = $67 ; 24-bit param (This is almost certainly messing up AppleSoft, but meh)
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2017-12-26 05:41:09 +00:00
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CACHEPTR = $6A ; General purpose cache pointer (This is almost certainly messing up AppleSoft, but meh)
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2018-01-06 23:30:06 +00:00
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CACHEDATA = $6C ; General purpose cache data (This is almost certainly messing up AppleSoft, but meh)
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2018-01-16 20:56:53 +00:00
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leftScreenEdge = $6E ; Reserved for leftScreenEdge (This is almost certainly messing up AppleSoft, but meh)
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2017-09-30 00:53:05 +00:00
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STACKPTR = $70 ; Cache for stack pointer in fast graphics
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2017-10-01 22:40:29 +00:00
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SHADOWREGISTER = $72 ; Cache for shadow register in fast graphics
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STACKREGISTER = $73 ; Cache for stack register in fast graphics
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2018-01-19 02:15:42 +00:00
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lastCompiledTerrainY = $75 ; The highest Y value that the compiled renderer must handle
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2018-01-16 20:56:53 +00:00
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; Terrain constants
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TERRAINWIDTH = 640 ; In pixels
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MAXTERRAINHEIGHT = 100 ; In pixels
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2018-03-05 20:32:05 +00:00
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COMPILEDTERRAINROW = TERRAINWIDTH/4+4 ; In words, +4 to make room for clipping jump at end of row
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2018-01-16 20:56:53 +00:00
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VISIBLETERRAINWIDTH = TERRAINWIDTH/4 ; In words- width minus jump return padding
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VISIBLETERRAINWINDOW = 80 ; In words
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MAXSPANSPERROW = 15
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SPANROWBYTES = MAXSPANSPERROW*2 + 2 ; In bytes
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2018-03-05 20:32:05 +00:00
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CLIPPEDTERRAINSTACK = $3fff ; Location of stack where clipped terrain data lives
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2018-01-16 20:56:53 +00:00
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; Terrain data, stored as height values 2 pixels wide (bytes)
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terrainDataFar = $02f500
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terrainData = $f500
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; .repeat TERRAINWIDTH/2
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; .word 0
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; .endrepeat
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terrainDataEnd = terrainData + (TERRAINWIDTH/2 * 2)
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