;* */
;* */
;* */
-;* (C) 2002 Ullrich von Bassewitz */
-;* Wacholderweg 14 */
-;* D-70597 Stuttgart */
-;* EMail: uz@musoftware.de */
+;* (C) 2002-2012, Ullrich von Bassewitz */
+;* Roemerstrasse 52 */
+;* D-70794 Filderstadt */
+;* EMail: uz@cc65.org */
;* */
;* */
;* This software is provided 'as-is', without any expressed or implied */
;------------------------------------------------------------------------------
-; Offsets into the driver header
-
-TGI_HDR_ID = 0 ; Contains 0x74, 0x67, 0x69 ("tgi")
-TGI_HDR_VERSION = 3 ; Interface version
-TGI_HDR_XRES = 4 ; X resolution
-TGI_HDR_YRES = 6 ; Y resolution
-TGI_HDR_COLORCOUNT = 8 ; Number of available colors
-TGI_HDR_PAGECOUNT = 9 ; Number of screens available
-TGI_HDR_FONTSIZE_X = 10 ; System font size in X direction
-TGI_HDR_FONTSIZE_Y = 11 ; System font size in Y direction
-TGI_HDR_RES = 12 ; Reserved for extensions
-
-TGI_HDR_JUMPTAB = 16
-TGI_HDR_INSTALL = TGI_HDR_JUMPTAB+0 ; INSTALL routine
-TGI_HDR_DEINSTALL = TGI_HDR_JUMPTAB+2 ; DEINSTALL routine
-TGI_HDR_INIT = TGI_HDR_JUMPTAB+4 ; INIT routine
-TGI_HDR_DONE = TGI_HDR_JUMPTAB+6 ; DONE routine
-TGI_HDR_GETERROR = TGI_HDR_JUMPTAB+8 ; GETERROR routine
-TGI_HDR_CONTROL = TGI_HDR_JUMPTAB+10 ; CONTROL routine
-TGI_HDR_CLEAR = TGI_HDR_JUMPTAB+12 ; CLEAR routine
-TGI_HDR_SETVIEWPAGE = TGI_HDR_JUMPTAB+14 ; SETVIEWPAGE routine
-TGI_HDR_SETDRAWPAGE = TGI_HDR_JUMPTAB+16 ; SETDRAWPAGE routine
-TGI_HDR_SETCOLOR = TGI_HDR_JUMPTAB+18 ; SETCOLOR routine
-TGI_HDR_SETPALETTE = TGI_HDR_JUMPTAB+20 ; SETPALETTE routine
-TGI_HDR_GETPALETTE = TGI_HDR_JUMPTAB+22 ; GETPALETTE routine
-TGI_HDR_GETDEFPALETTE = TGI_HDR_JUMPTAB+24 ; GETDEFPALETTE routine
-TGI_HDR_SETPIXEL = TGI_HDR_JUMPTAB+26 ; SETPIXEL routine
-TGI_HDR_GETPIXEL = TGI_HDR_JUMPTAB+28 ; GETPIXEL routine
-TGI_HDR_HORLINE = TGI_HDR_JUMPTAB+30 ; HORLINE routine
-TGI_HDR_LINE = TGI_HDR_JUMPTAB+32 ; LINE routine
-TGI_HDR_BAR = TGI_HDR_JUMPTAB+34 ; BAR routine
-TGI_HDR_CIRCLE = TGI_HDR_JUMPTAB+36 ; CIRCLE routine
-TGI_HDR_TEXTSTYLE = TGI_HDR_JUMPTAB+39 ; TEXTSTYLE routine
-TGI_HDR_OUTTEXT = TGI_HDR_JUMPTAB+42 ; OUTTEXT routine
-
-TGI_HDR_JUMPCOUNT = 21 ; Number of jump vectors
+; The driver header
+
+.struct TGI_HDR
+ ID .byte 3 ; Contains 0x74, 0x67, 0x69 ("tgi")
+ VERSION .byte 1 ; Interface version
+ LIBREF .addr ; Library reference
+ VARS .struct
+ XRES .word 1 ; X resolution
+ YRES .word 1 ; Y resolution
+ COLORCOUNT .byte 1 ; Number of available colors
+ PAGECOUNT .byte 1 ; Number of screens available
+ FONTWIDTH .byte 1 ; System font width in pixel
+ FONTHEIGHT .byte 1 ; System font height in pixel
+ ASPECTRATIO .word 1 ; Fixed point 8.8 format
+ FLAGS .byte 1 ; TGI driver flags
+ .endstruct
+ JUMPTAB .struct
+ INSTALL .addr ; INSTALL routine
+ UNINSTALL .addr ; UNINSTALL routine
+ INIT .addr ; INIT routine
+ DONE .addr ; DONE routine
+ GETERROR .addr ; GETERROR routine
+ CONTROL .addr ; CONTROL routine
+ CLEAR .addr ; CLEAR routine
+ SETVIEWPAGE .addr ; SETVIEWPAGE routine
+ SETDRAWPAGE .addr ; SETDRAWPAGE routine
+ SETCOLOR .addr ; SETCOLOR routine
+ SETPALETTE .addr ; SETPALETTE routine
+ GETPALETTE .addr ; GETPALETTE routine
+ GETDEFPALETTE .addr ; GETDEFPALETTE routine
+ SETPIXEL .addr ; SETPIXEL routine
+ GETPIXEL .addr ; GETPIXEL routine
+ LINE .addr ; LINE routine
+ BAR .addr ; BAR routine
+ TEXTSTYLE .addr ; TEXTSTYLE routine
+ OUTTEXT .addr ; OUTTEXT routine
+ .endstruct
+.endstruct
;------------------------------------------------------------------------------
-; Text style constants
+; The TGI API version, stored at TGI_HDR_VERSION
+
+TGI_API_VERSION = $06
+
+;------------------------------------------------------------------------------
+; Bitmapped tgi driver flags, stored in TGI_HDR::VARS::FLAGS.
+; Beware: Some of the bits are tested using the BIT instruction, so do not
+; change the values without checking the code!
+
+TGI_BM_FONT_FINESCALE = $80 ; Bitmap fonts are fine grained scalable
+
+;------------------------------------------------------------------------------
+; Text constants
+
+TGI_FONT_BITMAP = 0
+TGI_FONT_VECTOR = 1
TGI_TEXT_HORIZONTAL = 0
TGI_TEXT_VERTICAL = 1
+;----------------------------------------------------------------------------
+; Results of tgi_outcode
+
+TGI_CLIP_NONE = $00
+TGI_CLIP_LEFT = $01
+TGI_CLIP_RIGHT = $02
+TGI_CLIP_BOTTOM = $04
+TGI_CLIP_TOP = $08
+
;------------------------------------------------------------------------------
-; Variables
+; ASM accessible color constants
- .global _tgi_drv ; Pointer to driver
- .global _tgi_error ; Last error code
- .global _tgi_mode ; Graphics mode or zero
+ .global tgi_color_black:zp ; Target-specific value for black
+ .global tgi_color_white:zp ; Target-specific value for white
+
+;------------------------------------------------------------------------------
+; C accessible variables
+
+ .global _tgi_drv ; Pointer to driver
+ .global _tgi_error ; Last error code
+ .global _tgi_gmode ; Flag: graphics mode active
.global _tgi_curx ; Current drawing cursor X
.global _tgi_cury ; Current drawing cursor Y
.global _tgi_color ; Current drawing color
+ .global _tgi_font ; Which font to use
.global _tgi_textdir ; Current text direction
- .global _tgi_textmagx ; Text magnification in X dir
- .global _tgi_textmagy ; Text magnification in Y dir
+ .global _tgi_vectorfont ; Pointer to vector font
+ .global _tgi_textscalew ; Text magnification for the width
+ .global _tgi_textscaleh ; Text magnification for the height
+ .global _tgi_charwidth ; Width of scaled system font char
+ .global _tgi_charheight ; Height of scaled system font char
.global _tgi_xres ; X resolution of the current mode
.global _tgi_yres ; Y resolution of the current mode
+ .global _tgi_xmax ; Maximum X coordinate
+ .global _tgi_ymax ; Maximum Y coordinate
.global _tgi_colorcount ; Number of available colors
.global _tgi_pagecount ; Number of available screen pages
- .global _tgi_fontsizex ; System font X size
- .global _tgi_fontsizey ; System font Y size
+ .global _tgi_fontwidth ; System font width
+ .global _tgi_fontheight ; System font height
+ .global _tgi_aspectratio ; Aspect ratio, fixed point 8.8
+ .global _tgi_flags ; TGI driver flags
+
+;------------------------------------------------------------------------------
+; ASM accessible variables
+
+ .global tgi_clip_x1 ; Coordinate for line clipper
+ .global tgi_clip_y1 ; Coordinate for line clipper
+ .global tgi_clip_x2 ; Coordinate for line clipper
+ .global tgi_clip_y2 ; Coordinate for line clipper
;------------------------------------------------------------------------------
; Driver entry points
.global tgi_install
- .global tgi_deinstall
+ .global tgi_uninstall
.global tgi_init
.global tgi_done
- .global tgi_geterror
+ .global tgi_geterror
.global tgi_control
.global tgi_clear
.global tgi_setviewpage
.global tgi_getdefpalette
.global tgi_setpixel
.global tgi_getpixel
- .global tgi_horline
.global tgi_line
.global tgi_bar
- .global tgi_circle
.global tgi_textstyle
.global tgi_outtext
;------------------------------------------------------------------------------
; ASM functions
- .global tgi_emu_bar
+ .global tgi_clear_ptr
+ .global tgi_clippedline
+ .global tgi_curtoxy
.global tgi_getset
+ .global tgi_imulround
.global tgi_inv_arg
+ .global tgi_inv_drv
.global tgi_linepop
- .global tgi_set_ptr
+ .global tgi_outcode
.global tgi_popxy
.global tgi_popxy2
- .global tgi_curtoxy
-
+ .global tgi_set_ptr
+;------------------------------------------------------------------------------
+; C callable functions
+
+ .global _tgi_arc
+ .global _tgi_bar
+ .global _tgi_circle
+ .global _tgi_clear
+ .global _tgi_done
+ .global _tgi_ellipse
+ .global _tgi_getaspectratio
+ .global _tgi_getcolor
+ .global _tgi_getcolorcount
+ .global _tgi_getdefpalette
+ .global _tgi_geterror
+ .global _tgi_geterrormsg
+ .global _tgi_getmaxcolor
+ .global _tgi_getmaxx
+ .global _tgi_getmaxy
+ .global _tgi_getpagecount
+ .global _tgi_getpalette
+ .global _tgi_getpixel
+ .global _tgi_gettextheight
+ .global _tgi_gettextwidth
+ .global _tgi_getxres
+ .global _tgi_getyres
+ .global _tgi_gotoxy
+ .global _tgi_imulround
+ .global _tgi_init
+ .global _tgi_install
+ .global _tgi_install_vectorfont
+ .global _tgi_ioctl
+ .global _tgi_line
+ .global _tgi_lineto
+ .global _tgi_load_driver
+ .global _tgi_outtext
+ .global _tgi_outtextxy
+ .global _tgi_pieslice
+ .global _tgi_setaspectratio
+ .global _tgi_setcolor
+ .global _tgi_setdrawpage
+ .global _tgi_setpalette
+ .global _tgi_setpixel
+ .global _tgi_settextdir
+ .global _tgi_settextscale
+ .global _tgi_settextstyle
+ .global _tgi_setviewpage
+ .global _tgi_uninstall
+ .global _tgi_unload
projects / cc65 / blobdiff