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159 lines
3.8 KiB
C
159 lines
3.8 KiB
C
/* ------------------------------------------------------------------------
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System : Manx Aztec C65 Version 3.2b
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MS-DOS cross-development environment
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Platform : Apple IIe 128K PRODOS 8
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Program : drbytes.c
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Description : G2 Library Routine
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Double Hi-Res 140 x 192 x 16 color array
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Written by : Bill Buckels
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Date Written : January 2013
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Revision : 1.0 First Release
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Licence : You may use this code for whatever you wish as long
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as you agree that Bill Buckels has no warranty or
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liability obligations whatsoever from said use.
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------------------------------------------------------------------------ */
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/*
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The following is logically reordered to match the lores
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color order...
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Repeated
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Binary
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Color aux1 main1 aux2 main2 Pattern
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Black 00 00 00 00 0000
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Magenta 08 11 22 44 0001
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Dark Blue 11 22 44 08 1000
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Violet 19 33 66 4C 1001
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Dark Green 22 44 08 11 0100
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Grey1 2A 55 2A 55 0101
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Medium Blue 33 66 4C 19 1100
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Light Blue 3B 77 6E 5D 1101
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Brown 44 08 11 22 0010
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Orange 4C 19 33 66 0011
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Grey2 55 2A 55 2A 1010
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Pink 5D 3B 77 6E 1011
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Green 66 4C 19 33 0110
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Yellow 6E 5D 3B 77 0111
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Aqua 77 6E 5D 3B 1110
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White 7F 7F 7F 7F 1111
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*/
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/*
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#define LOBLACK 0
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#define LORED 1
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#define LODKBLUE 2
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#define LOPURPLE 3
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#define LODKGREEN 4
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#define LOGRAY 5
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#define LOMEDBLUE 6
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#define LOLTBLUE 7
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#define LOBROWN 8
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#define LOORANGE 9
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#define LOGREY 10
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#define LOPINK 11
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#define LOLTGREEN 12
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#define LOYELLOW 13
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#define LOAQUA 14
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#define LOWHITE 15
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*/
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/* the following array is based on the above */
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unsigned char dhrbytes[16][4] = {
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0x00,0x00,0x00,0x00,
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0x08,0x11,0x22,0x44,
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0x11,0x22,0x44,0x08,
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0x19,0x33,0x66,0x4C,
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0x22,0x44,0x08,0x11,
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0x2A,0x55,0x2A,0x55,
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0x33,0x66,0x4C,0x19,
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0x3B,0x77,0x6E,0x5D,
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0x44,0x08,0x11,0x22,
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0x4C,0x19,0x33,0x66,
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0x55,0x2A,0x55,0x2A,
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0x5D,0x3B,0x77,0x6E,
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0x66,0x4C,0x19,0x33,
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0x6E,0x5D,0x3B,0x77,
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0x77,0x6E,0x5D,0x3B,
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0x7F,0x7F,0x7F,0x7F};
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/* position of pixels in 4 byte pattern */
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/* remember that byte 0 and byte 2 are auxmem
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and byte 1 and byte 3 are main mem
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and the 4 bit pattern of the 7 pixels straddle
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the two memory banks */
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/* 7 pixels = 4 bytes */
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/* left for reference...
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unsigned char dhrpattern[7][4] = {
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0,0,0,0,
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0,0,0,1,
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1,1,1,1,
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1,1,2,2,
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2,2,2,2,
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2,3,3,3,
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3,3,3,3};
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*/
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/* mask values to erase previous contents of pixels */
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/* for reference
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unsigned char dhrmsk[7][2] = {
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0x70, 0,
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0x0f, 0x7e,
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0x61, 0,
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0x1f, 0x7c,
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0x43, 0,
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0x3f, 0x78,
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0x07, 0};
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*/
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/* getpixel mask values - what color to use */
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/* for reference
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unsigned char dhrgetmsk[7][2] = {
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0x0f, 0,
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0x70, 0x01,
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0x1e, 0,
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0x60, 0x03,
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0x3c, 0,
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0x40, 0x07,
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0x78, 0};
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*/
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/* offset into base of memory frame "raster" of byte pairs for pixels */
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/* double hi-res xbase */
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/* for reference
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char DHB[140] = {
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0,0,0,0,0,0,0,
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2,2,2,2,2,2,2,
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4,4,4,4,4,4,4,
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6,6,6,6,6,6,6,
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8,8,8,8,8,8,8,
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10,10,10,10,10,10,10,
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12,12,12,12,12,12,12,
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14,14,14,14,14,14,14,
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16,16,16,16,16,16,16,
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18,18,18,18,18,18,18,
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20,20,20,20,20,20,20,
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22,22,22,22,22,22,22,
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24,24,24,24,24,24,24,
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26,26,26,26,26,26,26,
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28,28,28,28,28,28,28,
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30,30,30,30,30,30,30,
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32,32,32,32,32,32,32,
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34,34,34,34,34,34,34,
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36,36,36,36,36,36,36,
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38,38,38,38,38,38,38};
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*/
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