From bfb8dd8f9553e72ea92e60b353428a137a718a15 Mon Sep 17 00:00:00 2001
From: cpg <cpg@b7a2c559-68d2-44c3-8de9-860c34a00d81>
Date: Sun, 6 Feb 2011 20:57:14 +0000
Subject: [PATCH] add Antic opcodes (submitted by Christian Krueger)

git-svn-id: svn://svn.cc65.org/cc65/trunk@4968 b7a2c559-68d2-44c3-8de9-860c34a00d81
---
 asminc/atari.inc | 73 ++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 70 insertions(+), 3 deletions(-)

diff --git a/asminc/atari.inc b/asminc/atari.inc
index 135f7d6b4..8d84311be 100644
--- a/asminc/atari.inc
+++ b/asminc/atari.inc
@@ -1,6 +1,6 @@
 ;-------------------------------------------------------------------------
 ; Atari System Equates
-; by Freddy Offenga & Christian Groessler
+; by Freddy Offenga, Christian Groessler, and Christian Krueger
 ;
 ; References:
 ; - Atari 400/800 OS rev.B source code, Atari 1979
@@ -1017,7 +1017,7 @@ STMTAB	= $88		;2-byte statement table address
 STMCUR	= $8A		;2-byte current statement pointer
 STARP	= $8C		;2-byte string and array table pointer
 RUNSTK	= $8E		;2-byte runtime stack address
-;MEMTOP	= $90		;2-byte top of memory pointer
+BMEMTOP	= $90		;2-byte top of memory pointer
 STOPLN	= $BA		;2-byte stopped line number
 ERRSAVE	= $C3		;1-byte error code
 PTABW	= $C9		;1-byte tab width
@@ -1096,6 +1096,73 @@ MYDOS        = 3
 NODOS        = 255
 
 ;-------------------------------------------------------------------------
-; End of atari.inc
+; Antic opcodes
 ;-------------------------------------------------------------------------
 
+; usage example:
+;
+; ScreenDL:
+; .byte	DL_BLK8
+; .byte	DL_BLK8
+; .byte DL_CHR40x8x1 + DL_LMS + DL_DLI
+; .word	ScreenAlignment
+; .byte	DL_BLK1 + DL_DLI
+; .byte	DL_MAP320x1x1 + DL_LMS
+; .word	Screen
+;
+; .repeat 99
+; .byte	DL_MAP320x1x1
+; .endrepeat
+; .byte	DL_MAP320x1x1 + DL_LMS
+; .word	Screen + 40 * 100	; 100 lines a 40 byte, 'Screen' has to be aligned correctly!
+; .repeat 92
+; .byte	DL_MAP320x1x1
+; .endrepeat
+;
+; .byte	DL_JVB
+
+; absolute instructions (non mode lines)
+
+DL_JMP	= 1
+DL_JVB  = 65
+
+DL_BLK1  = 0
+DL_BLK2  = 16
+DL_BLK3  = 32
+DL_BLK4  = 48
+DL_BLK5  = 64
+DL_BLK6  = 80
+DL_BLK7  = 96
+DL_BLK8  = 112
+
+; absolute instructions (mode lines)
+
+DL_CHR40x8x1  = 2		; monochrome, 40 character & 8 scanlines per mode line (GR. 0)
+DL_CHR40x10x1 = 3		; monochrome, 40 character & 10 scanlines per mode line
+DL_CHR40x8x4  = 4		; colour, 40 character & 8 scanlines per mode line (GR. 12)
+DL_CHR40x16x4 = 5		; colour, 40 character & 16 scanlines per mode line (GR. 13)
+DL_CHR20x8x2  = 6		; colour (duochrome per character), 20 character & 8 scanlines per mode line (GR. 1)
+DL_CHR20x16x2 = 7		; colour (duochrome per character), 20 character & 16 scanlines per mode line (GR. 2)
+
+DL_MAP40x8x4  = 8		; colour, 40 pixel & 8 scanlines per mode line (GR. 3)
+DL_MAP80x4x2  = 9		; 'duochrome', 80 pixel & 4 scanlines per mode line (GR.4) 
+DL_MAP80x4x4  = 10		; colour, 80 pixel & 4 scanlines per mode line (GR.5) 
+DL_MAP160x2x2 = 11		; 'duochrome', 160 pixel & 2 scanlines per mode line (GR.6) 
+DL_MAP160x1x2 = 12		; 'duochrome', 160 pixel & 1 scanline per mode line (GR.14) 
+DL_MAP160x2x4 = 13		; 4 colours, 160 pixel & 2 scanlines per mode line (GR.7) 
+DL_MAP160x1x4 = 14		; 4 colours, 160 pixel & 1 scanline per mode line (GR.15) 
+DL_MAP320x1x1 = 15		; monochrome, 320 pixel & 1 scanline per mode line (GR.8) 
+
+; modifiers on mode lines...
+
+DL_HSCROL = 16
+DL_VSCROL = 32
+DL_LMS    = 64
+
+; general modifier...
+
+DL_DLI	  = 128
+
+;-------------------------------------------------------------------------
+; End of atari.inc
+;-------------------------------------------------------------------------