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99 lines
5.7 KiB
C
99 lines
5.7 KiB
C
/*****************************************************************************/
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/* */
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/* _antic.h */
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/* */
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/* Internal include file, do not use directly */
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/* */
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/* */
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/* */
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/* (C) 2000 Freddy Offenga <taf_offenga@yahoo.com> */
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/* 24-Jan-2011: Christian Krueger: Added defines for Antic instruction set */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#ifndef __ANTIC_H
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#define __ANTIC_H
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/* Define a structure with the antic register offsets */
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struct __antic {
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unsigned char dmactl; /* direct memory access control */
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unsigned char chactl; /* character mode control */
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unsigned char dlistl; /* display list pointer low-byte */
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unsigned char dlisth; /* display list pointer high-byte */
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unsigned char hscrol; /* horizontal scroll enable */
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unsigned char vscrol; /* vertical scroll enable */
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unsigned char unuse0; /* unused */
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unsigned char pmbase; /* msb of p/m base address */
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unsigned char unuse1; /* unused */
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unsigned char chbase; /* character base address */
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unsigned char wsync; /* wait for horizontal synchronization */
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unsigned char vcount; /* vertical line counter */
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unsigned char penh; /* light pen horizontal position */
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unsigned char penv; /* light pen vertical position */
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unsigned char nmien; /* non-maskable interrupt enable */
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unsigned char nmires; /* nmi reset/status */
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};
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/* antic instruction set */
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/* absolute instructions (non mode lines) */
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#define DL_JMP (unsigned char) 1
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#define DL_JVB (unsigned char) 65
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#define DL_BLK1 (unsigned char) 0
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#define DL_BLK2 (unsigned char) 16
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#define DL_BLK3 (unsigned char) 32
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#define DL_BLK4 (unsigned char) 48
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#define DL_BLK5 (unsigned char) 64
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#define DL_BLK6 (unsigned char) 80
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#define DL_BLK7 (unsigned char) 96
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#define DL_BLK8 (unsigned char) 112
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/* absolute instructions (mode lines) */
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#define DL_CHR40x8x1 (unsigned char) 2 /* monochrome, 40 character & 8 scanlines per mode line (GR. 0) */
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#define DL_CHR40x10x1 (unsigned char) 3 /* monochrome, 40 character & 10 scanlines per mode line */
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#define DL_CHR40x8x4 (unsigned char) 4 /* colour, 40 character & 8 scanlines per mode line (GR. 12) */
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#define DL_CHR40x16x4 (unsigned char) 5 /* colour, 40 character & 16 scanlines per mode line (GR. 13) */
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#define DL_CHR20x8x2 (unsigned char) 6 /* colour (duochrome per character), 20 character & 8 scanlines per mode line (GR. 1) */
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#define DL_CHR20x16x2 (unsigned char) 7 /* colour (duochrome per character), 20 character & 16 scanlines per mode line (GR. 2) */
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#define DL_MAP40x8x4 (unsigned char) 8 /* colour, 40 pixel & 8 scanlines per mode line (GR. 3) */
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#define DL_MAP80x4x2 (unsigned char) 9 /* 'duochrome', 80 pixel & 4 scanlines per mode line (GR.4) */
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#define DL_MAP80x4x4 (unsigned char) 10 /* colour, 80 pixel & 4 scanlines per mode line (GR.5) */
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#define DL_MAP160x2x2 (unsigned char) 11 /* 'duochrome', 160 pixel & 2 scanlines per mode line (GR.6) */
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#define DL_MAP160x1x2 (unsigned char) 12 /* 'duochrome', 160 pixel & 1 scanline per mode line (GR.14) */
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#define DL_MAP160x2x4 (unsigned char) 13 /* 4 colours, 160 pixel & 2 scanlines per mode line (GR.7) */
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#define DL_MAP160x1x4 (unsigned char) 14 /* 4 colours, 160 pixel & 1 scanline per mode line (GR.15) */
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#define DL_MAP320x1x1 (unsigned char) 15 /* monochrome, 320 pixel & 1 scanline per mode line (GR.8) */
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/* modifiers on mode lines */
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#define DL_HSCROL(x) (unsigned char)((x) | 16)
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#define DL_VSCROL(x) (unsigned char)((x) | 32)
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#define DL_LMS(x) (unsigned char)((x) | 64)
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/* general modifier */
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#define DL_DLI(x) (unsigned char)((x) | 128)
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/* End of _antic.h */
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#endif /* #ifndef __ANTIC_H */
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