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Removed (pretty inconsistently used) tab chars from source code base.

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This commit is contained in:
Oliver Schmidt
2013-05-09 13:56:54 +02:00
parent 44fd1082ae
commit 85885001b1
1773 changed files with 62864 additions and 62868 deletions
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504
libsrc/apple2/tgi/a2.hi.s
View File

@@ -5,55 +5,55 @@
; Oliver Schmidt <ol.sc@web.de>
;
.include "zeropage.inc"
.include "zeropage.inc"
.include "tgi-kernel.inc"
.include "tgi-error.inc"
.include "apple2.inc"
.include "tgi-kernel.inc"
.include "tgi-error.inc"
.include "apple2.inc"
; ------------------------------------------------------------------------
; Zero page stuff
HBASL := $26
HMASK := $30
PAGE := $E6
SCALE := $E7
ROT := $F9
HBASL := $26
HMASK := $30
PAGE := $E6
SCALE := $E7
ROT := $F9
; Graphics entry points, by cbmnut (applenut??) cbmnut@hushmail.com
TEXT := $F399 ; Return to text screen
HGR2 := $F3D8 ; Initialize and clear hi-res page 2.
HGR := $F3E2 ; Initialize and clear hi-res page 1.
HCLR := $F3F2 ; Clear the current hi-res screen to black.
BKGND := $F3F6 ; Clear the current hi-res screen to the
TEXT := $F399 ; Return to text screen
HGR2 := $F3D8 ; Initialize and clear hi-res page 2.
HGR := $F3E2 ; Initialize and clear hi-res page 1.
HCLR := $F3F2 ; Clear the current hi-res screen to black.
BKGND := $F3F6 ; Clear the current hi-res screen to the
; last plotted color (from ($1C).
HPOSN := $F411 ; Positions the hi-res cursor without
HPOSN := $F411 ; Positions the hi-res cursor without
; plotting a point.
; Enter with (A) = Y-coordinate, and
; (Y,X) = X-coordinate.
HPLOT := $F457 ; Calls HPOSN and tries to plot a dot at
HPLOT := $F457 ; Calls HPOSN and tries to plot a dot at
; the cursor's position. If you are
; trying to plot a non-white color at
; a complementary color position, no
; dot will be plotted.
HLIN := $F53A ; Draws a line from the last plotted
HLIN := $F53A ; Draws a line from the last plotted
; point or line destination to:
; (X,A) = X-coordinate, and
; (Y) = Y-coordinate.
HFIND := $F5CB ; Converts the hi-res coursor's position
HFIND := $F5CB ; Converts the hi-res coursor's position
; back to X- and Y-coordinates; stores
; X-coordinate at $E0,E1 and Y-coordinate
; at $E2.
DRAW := $F601 ; Draws a shape. Enter with (Y,X) = the
DRAW := $F601 ; Draws a shape. Enter with (Y,X) = the
; address of the shape table, and (A) =
; the rotation factor. Uses the current
; color.
XDRAW := $F65D ; Draws a shape by inverting the existing
XDRAW := $F65D ; Draws a shape by inverting the existing
; color of the dots the shape draws over.
; Same entry parameters as DRAW.
SETHCOL := $F6EC ; Set the hi-res color to (X), where (X)
SETHCOL := $F6EC ; Set the hi-res color to (X), where (X)
; must be between 0 and 7.
; ------------------------------------------------------------------------
@@ -61,100 +61,100 @@ SETHCOL := $F6EC ; Set the hi-res color to (X), where (X)
; Variables mapped to the zero page segment variables. Some of these are
; used for passing parameters to the driver.
X1 := ptr1
Y1 := ptr2
X2 := ptr3
Y2 := ptr4
X1 := ptr1
Y1 := ptr2
X2 := ptr3
Y2 := ptr4
; ------------------------------------------------------------------------
.segment "JUMPTABLE"
.segment "JUMPTABLE"
; Header. Includes jump table and constants.
; First part of the header is a structure that has a magic and defines the
; capabilities of the driver
.byte $74, $67, $69 ; "tgi"
.byte TGI_API_VERSION ; TGI API version number
.word 280 ; X resolution
.word 192 ; Y resolution
.byte 8 ; Number of drawing colors
pages: .byte 2 ; Number of screens available
.byte 7 ; System font X size
.byte 8 ; System font Y size
.word $00EA ; Aspect ratio (based on 4/3 display)
.byte $74, $67, $69 ; "tgi"
.byte TGI_API_VERSION ; TGI API version number
.word 280 ; X resolution
.word 192 ; Y resolution
.byte 8 ; Number of drawing colors
pages: .byte 2 ; Number of screens available
.byte 7 ; System font X size
.byte 8 ; System font Y size
.word $00EA ; Aspect ratio (based on 4/3 display)
.byte 0 ; TGI driver flags
; Next comes the jump table. With the exception of IRQ, all entries must be
; valid and may point to an RTS for test versions (function not implemented).
.addr INSTALL
.addr UNINSTALL
.addr INIT
.addr DONE
.addr GETERROR
.addr CONTROL
.addr CLEAR
.addr SETVIEWPAGE
.addr SETDRAWPAGE
.addr SETCOLOR
.addr SETPALETTE
.addr GETPALETTE
.addr GETDEFPALETTE
.addr SETPIXEL
.addr GETPIXEL
.addr LINE
.addr BAR
.addr TEXTSTYLE
.addr OUTTEXT
.addr INSTALL
.addr UNINSTALL
.addr INIT
.addr DONE
.addr GETERROR
.addr CONTROL
.addr CLEAR
.addr SETVIEWPAGE
.addr SETDRAWPAGE
.addr SETCOLOR
.addr SETPALETTE
.addr GETPALETTE
.addr GETDEFPALETTE
.addr SETPIXEL
.addr GETPIXEL
.addr LINE
.addr BAR
.addr TEXTSTYLE
.addr OUTTEXT
.addr 0 ; IRQ entry is unused
; ------------------------------------------------------------------------
.bss
.bss
; Absolute variables used in the code
ERROR: .res 1 ; Error code
ERROR: .res 1 ; Error code
; ------------------------------------------------------------------------
.rodata
.rodata
; Constants and tables
DEFPALETTE: .byte $00, $01, $02, $03, $04, $05, $06, $07
FONT:
; Beagle Bros Shape Mechanic font F.ASCII.SMALL
; modified to exactly reproduce the text glyphs
.incbin "a2.hi.fnt"
; Beagle Bros Shape Mechanic font F.ASCII.SMALL
; modified to exactly reproduce the text glyphs
.incbin "a2.hi.fnt"
; ------------------------------------------------------------------------
.code
.code
; INSTALL routine. Is called after the driver is loaded into memory. May
; initialize anything that has to be done just once. Is probably empty
; most of the time.
; Must set an error code: NO
INSTALL:
.ifdef __APPLE2ENH__
; No page switching if 80 column store is enabled
bit RD80COL
bpl :+
lda #$01
sta pages
: .endif
.ifdef __APPLE2ENH__
; No page switching if 80 column store is enabled
bit RD80COL
bpl :+
lda #$01
sta pages
: .endif
; Fall through
; Fall through
; UNINSTALL routine. Is called before the driver is removed from memory. May
; clean up anything done by INSTALL but is probably empty most of the time.
; Must set an error code: NO
UNINSTALL:
rts
rts
; INIT: Changes an already installed device from text mode to graphics mode.
; Note that INIT/DONE may be called multiple times while the driver
@@ -166,132 +166,132 @@ UNINSTALL:
; active, so there is no need to protect against that.
; Must set an error code: YES
INIT:
; Switch into graphics mode
bit MIXCLR
bit HIRES
bit TXTCLR
; Switch into graphics mode
bit MIXCLR
bit HIRES
bit TXTCLR
; Beagle Bros Shape Mechanic fonts don't
; scale well so use fixed scaling factor
lda #$01
sta SCALE
; Beagle Bros Shape Mechanic fonts don't
; scale well so use fixed scaling factor
lda #$01
sta SCALE
; Done, reset the error code
lda #TGI_ERR_OK
sta ERROR
rts
; Done, reset the error code
lda #TGI_ERR_OK
sta ERROR
rts
; DONE: Will be called to switch the graphics device back into text mode.
; The graphics kernel will never call DONE when no graphics mode is active,
; so there is no need to protect against that.
; Must set an error code: NO
DONE:
; Switch into text mode
bit TXTSET
bit LOWSCR
; Switch into text mode
bit TXTSET
bit LOWSCR
.ifdef __APPLE2ENH__
; Limit SET80COL-HISCR to text
bit LORES
.endif
.ifdef __APPLE2ENH__
; Limit SET80COL-HISCR to text
bit LORES
.endif
; Reset the text window top
lda #$00
sta WNDTOP
rts
; Reset the text window top
lda #$00
sta WNDTOP
rts
; GETERROR: Return the error code in A and clear it.
GETERROR:
lda ERROR
ldx #TGI_ERR_OK
stx ERROR
rts
lda ERROR
ldx #TGI_ERR_OK
stx ERROR
rts
; CONTROL: Platform/driver specific entry point.
; Must set an error code: YES
CONTROL:
; Check data msb and code to be 0
ora ptr1+1
bne err
; Check data msb and code to be 0
ora ptr1+1
bne err
; Check data lsb to be [0..1]
lda ptr1
cmp #1+1
bcs err
; Check data lsb to be [0..1]
lda ptr1
cmp #1+1
bcs err
; Set text window top
tax
beq :+
lda #20
: sta WNDTOP
; Set text window top
tax
beq :+
lda #20
: sta WNDTOP
; Switch 4 lines of text
.assert MIXCLR + 1 = MIXSET, error
lda MIXCLR,x ; No BIT absolute,X available
; Switch 4 lines of text
.assert MIXCLR + 1 = MIXSET, error
lda MIXCLR,x ; No BIT absolute,X available
; Done, reset the error code
lda #TGI_ERR_OK
beq :+ ; Branch always
; Done, reset the error code
lda #TGI_ERR_OK
beq :+ ; Branch always
; Done, set the error code
err: lda #TGI_ERR_INV_ARG
: sta ERROR
rts
; Done, set the error code
err: lda #TGI_ERR_INV_ARG
: sta ERROR
rts
; CLEAR: Clears the screen.
; Must set an error code: NO
CLEAR:
bit $C082 ; Switch in ROM
jsr HCLR
bit $C080 ; Switch in LC bank 2 for R/O
rts
bit $C082 ; Switch in ROM
jsr HCLR
bit $C080 ; Switch in LC bank 2 for R/O
rts
; SETVIEWPAGE: Set the visible page. Called with the new page in A (0..n).
; The page number is already checked to be valid by the graphics kernel.
; Must set an error code: NO (will only be called if page ok)
SETVIEWPAGE:
tax
.assert LOWSCR + 1 = HISCR, error
lda LOWSCR,x ; No BIT absolute,X available
rts
tax
.assert LOWSCR + 1 = HISCR, error
lda LOWSCR,x ; No BIT absolute,X available
rts
; SETDRAWPAGE: Set the drawable page. Called with the new page in A (0..n).
; The page number is already checked to be valid by the graphics kernel.
; Must set an error code: NO (will only be called if page ok)
SETDRAWPAGE:
tax
beq :+
lda #>$4000 ; Page 2
.byte $2C ; BIT absolute
: lda #>$2000 ; Page 1
sta PAGE
rts
tax
beq :+
lda #>$4000 ; Page 2
.byte $2C ; BIT absolute
: lda #>$2000 ; Page 1
sta PAGE
rts
; SETCOLOR: Set the drawing color (in A). The new color is already checked
; to be in a valid range (0..maxcolor-1).
; Must set an error code: NO (will only be called if color ok)
SETCOLOR:
bit $C082 ; Switch in ROM
tax
jsr SETHCOL
bit $C080 ; Switch in LC bank 2 for R/O
rts
bit $C082 ; Switch in ROM
tax
jsr SETHCOL
bit $C080 ; Switch in LC bank 2 for R/O
rts
; SETPALETTE: Set the palette (not available with all drivers/hardware).
; A pointer to the palette is passed in ptr1. Must set an error if palettes
; are not supported
; Must set an error code: YES
SETPALETTE:
lda #TGI_ERR_INV_FUNC
sta ERROR
rts
lda #TGI_ERR_INV_FUNC
sta ERROR
rts
; GETPALETTE: Return the current palette in A/X. Even drivers that cannot
; set the palette should return the default palette here, so there's no
; way for this function to fail.
; Must set an error code: NO
GETPALETTE:
; Fall through
; Fall through
; GETDEFPALETTE: Return the default palette for the driver in A/X. All
; drivers should return something reasonable here, even drivers that don't
@@ -299,147 +299,147 @@ GETPALETTE:
; of the (not changeable) palette.
; Must set an error code: NO (all drivers must have a default palette)
GETDEFPALETTE:
lda #<DEFPALETTE
ldx #>DEFPALETTE
rts
lda #<DEFPALETTE
ldx #>DEFPALETTE
rts
; SETPIXEL: Draw one pixel at X1/Y1 = ptr1/ptr2 with the current drawing
; color. The coordinates passed to this function are never outside the
; visible screen area, so there is no need for clipping inside this function.
; Must set an error code: NO
SETPIXEL:
bit $C082 ; Switch in ROM
ldx X1
ldy X1+1
lda Y1
jsr HPLOT
bit $C080 ; Switch in LC bank 2 for R/O
rts
bit $C082 ; Switch in ROM
ldx X1
ldy X1+1
lda Y1
jsr HPLOT
bit $C080 ; Switch in LC bank 2 for R/O
rts
; GETPIXEL: Read the color value of a pixel and return it in A/X. The
; coordinates passed to this function are never outside the visible screen
; area, so there is no need for clipping inside this function.
GETPIXEL:
bit $C082 ; Switch in ROM
ldx X1
ldy X1+1
lda Y1
jsr HPOSN
lda (HBASL),y
and HMASK
asl
beq :+ ; 0 (black)
lda #$03 ; 3 (white)
: bcc :+
adc #$03 ; += 4 (black -> black2, white -> white2)
: ldx #$00
bit $C080 ; Switch in LC bank 2 for R/O
rts
bit $C082 ; Switch in ROM
ldx X1
ldy X1+1
lda Y1
jsr HPOSN
lda (HBASL),y
and HMASK
asl
beq :+ ; 0 (black)
lda #$03 ; 3 (white)
: bcc :+
adc #$03 ; += 4 (black -> black2, white -> white2)
: ldx #$00
bit $C080 ; Switch in LC bank 2 for R/O
rts
; LINE: Draw a line from X1/Y1 to X2/Y2, where X1/Y1 = ptr1/ptr2 and
; X2/Y2 = ptr3/ptr4 using the current drawing color.
; Must set an error code: NO
LINE:
bit $C082 ; Switch in ROM
ldx X1
ldy X1+1
lda Y1
jsr HPOSN
lda X2
ldx X2+1
ldy Y2
jsr HLIN
bit $C080 ; Switch in LC bank 2 for R/O
rts
bit $C082 ; Switch in ROM
ldx X1
ldy X1+1
lda Y1
jsr HPOSN
lda X2
ldx X2+1
ldy Y2
jsr HLIN
bit $C080 ; Switch in LC bank 2 for R/O
rts
; BAR: Draw a filled rectangle with the corners X1/Y1, X2/Y2, where
; X1/Y1 = ptr1/ptr2 and X2/Y2 = ptr3/ptr4 using the current drawing color.
; Contrary to most other functions, the graphics kernel will sort and clip
; the coordinates before calling the driver, so on entry the following
; conditions are valid:
; X1 <= X2
; Y1 <= Y2
; (X1 >= 0) && (X1 < XRES)
; (X2 >= 0) && (X2 < XRES)
; (Y1 >= 0) && (Y1 < YRES)
; (Y2 >= 0) && (Y2 < YRES)
; X1 <= X2
; Y1 <= Y2
; (X1 >= 0) && (X1 < XRES)
; (X2 >= 0) && (X2 < XRES)
; (Y1 >= 0) && (Y1 < YRES)
; (Y2 >= 0) && (Y2 < YRES)
; Must set an error code: NO
BAR:
inc Y2
: lda Y2
pha
lda Y1
sta Y2
jsr LINE
pla
sta Y2
inc Y1
cmp Y1
bne :-
rts
inc Y2
: lda Y2
pha
lda Y1
sta Y2
jsr LINE
pla
sta Y2
inc Y1
cmp Y1
bne :-
rts
; TEXTSTYLE: Set the style used when calling OUTTEXT. Text scaling in X and Y
; direction is passend in X/Y, the text direction is passed in A.
; Must set an error code: NO
TEXTSTYLE:
cmp #TGI_TEXT_VERTICAL
bne :+
lda #48
: sta ROT
rts
cmp #TGI_TEXT_VERTICAL
bne :+
lda #48
: sta ROT
rts
; OUTTEXT: Output text at X/Y = ptr1/ptr2 using the current color and the
; current text style. The text to output is given as a zero terminated
; string with address in ptr3.
; Must set an error code: NO
OUTTEXT:
bit $C082 ; Switch in ROM
lda X1
ldy X1+1
ldx ROT
php ; Save Z flag
beq :+ ; Not horizontal
sec
sbc #$07 ; Adjust X
bcs :+
dey
: tax
lda Y1
plp ; Restore Z flag
bne :+ ; Not vertical
sec
sbc #$07 ; Adjust Y
: jsr HPOSN
clc
lda FONT+2*99 ; "connection char"
adc #<FONT
sta ptr4
lda FONT+2*99+1 ; "connection char"
adc #>FONT
sta ptr4+1
ldy #$00
: lda (ptr3),y
beq :+
sty tmp1 ; Save string index
sec
sbc #$1F ; No control chars
asl ; Offset * 2
tay
clc
lda FONT,y
adc #<FONT
tax
lda FONT+1,y
adc #>FONT
tay
lda ROT
jsr DRAW ; Draw char from string
ldx ptr4
ldy ptr4+1
lda ROT
jsr DRAW ; Draw "connection char"
ldy tmp1 ; Restore string index
iny
bne :- ; Branch always
: bit $C080 ; Switch in LC bank 2 for R/O
rts
bit $C082 ; Switch in ROM
lda X1
ldy X1+1
ldx ROT
php ; Save Z flag
beq :+ ; Not horizontal
sec
sbc #$07 ; Adjust X
bcs :+
dey
: tax
lda Y1
plp ; Restore Z flag
bne :+ ; Not vertical
sec
sbc #$07 ; Adjust Y
: jsr HPOSN
clc
lda FONT+2*99 ; "connection char"
adc #<FONT
sta ptr4
lda FONT+2*99+1 ; "connection char"
adc #>FONT
sta ptr4+1
ldy #$00
: lda (ptr3),y
beq :+
sty tmp1 ; Save string index
sec
sbc #$1F ; No control chars
asl ; Offset * 2
tay
clc
lda FONT,y
adc #<FONT
tax
lda FONT+1,y
adc #>FONT
tay
lda ROT
jsr DRAW ; Draw char from string
ldx ptr4
ldy ptr4+1
lda ROT
jsr DRAW ; Draw "connection char"
ldy tmp1 ; Restore string index
iny
bne :- ; Branch always
: bit $C080 ; Switch in LC bank 2 for R/O
rts

362
libsrc/apple2/tgi/a2.lo.s
View File

@@ -5,106 +5,106 @@
; Oliver Schmidt <ol.sc@web.de>
;
.include "zeropage.inc"
.include "zeropage.inc"
.include "tgi-kernel.inc"
.include "tgi-error.inc"
.include "apple2.inc"
.include "tgi-kernel.inc"
.include "tgi-error.inc"
.include "apple2.inc"
; ------------------------------------------------------------------------
; Zero page stuff
H2 := $2C
COLOR := $30
H2 := $2C
COLOR := $30
; ROM entry points
TEXT := $F399
PLOT := $F800
HLINE := $F819
CLRSC2 := $F838
SETCOL := $F864
SCRN := $F871
SETGR := $FB40
HOME := $FC58
TEXT := $F399
PLOT := $F800
HLINE := $F819
CLRSC2 := $F838
SETCOL := $F864
SCRN := $F871
SETGR := $FB40
HOME := $FC58
; Used for passing parameters to the driver
X1 := ptr1
Y1 := ptr2
X2 := ptr3
Y2 := ptr4
X1 := ptr1
Y1 := ptr2
X2 := ptr3
Y2 := ptr4
; ------------------------------------------------------------------------
.segment "JUMPTABLE"
.segment "JUMPTABLE"
; Header. Includes jump table and constants.
; First part of the header is a structure that has a magic and defines the
; capabilities of the driver
.byte $74, $67, $69 ; "tgi"
.byte TGI_API_VERSION ; TGI API version number
.word 40 ; X resolution
.word 48 ; Y resolution
.byte 16 ; Number of drawing colors
.byte 1 ; Number of screens available
.byte 8 ; System font X size
.byte 8 ; System font Y size
.word $0198 ; Aspect ratio (based on 4/3 display)
.byte $74, $67, $69 ; "tgi"
.byte TGI_API_VERSION ; TGI API version number
.word 40 ; X resolution
.word 48 ; Y resolution
.byte 16 ; Number of drawing colors
.byte 1 ; Number of screens available
.byte 8 ; System font X size
.byte 8 ; System font Y size
.word $0198 ; Aspect ratio (based on 4/3 display)
.byte 0 ; TGI driver flags
; Next comes the jump table. With the exception of IRQ, all entries must be
; valid and may point to an RTS for test versions (function not implemented).
.addr INSTALL
.addr UNINSTALL
.addr INIT
.addr DONE
.addr GETERROR
.addr CONTROL
.addr CLEAR
.addr SETVIEWPAGE
.addr SETDRAWPAGE
.addr SETCOLOR
.addr SETPALETTE
.addr GETPALETTE
.addr GETDEFPALETTE
.addr SETPIXEL
.addr GETPIXEL
.addr LINE
.addr BAR
.addr TEXTSTYLE
.addr OUTTEXT
.addr INSTALL
.addr UNINSTALL
.addr INIT
.addr DONE
.addr GETERROR
.addr CONTROL
.addr CLEAR
.addr SETVIEWPAGE
.addr SETDRAWPAGE
.addr SETCOLOR
.addr SETPALETTE
.addr GETPALETTE
.addr GETDEFPALETTE
.addr SETPIXEL
.addr GETPIXEL
.addr LINE
.addr BAR
.addr TEXTSTYLE
.addr OUTTEXT
.addr 0 ; IRQ entry is unused
; ------------------------------------------------------------------------
.bss
.bss
ERROR: .res 1 ; Error code
MIX: .res 1 ; 4 lines of text
ERROR: .res 1 ; Error code
MIX: .res 1 ; 4 lines of text
; ------------------------------------------------------------------------
.rodata
.rodata
DEFPALETTE: .byte $00, $01, $02, $03, $04, $05, $06, $07
.byte $08, $09, $0A, $0B, $0C, $0D, $0E, $0F
.byte $08, $09, $0A, $0B, $0C, $0D, $0E, $0F
TGI2COL: .byte $00, $0C, $03, $0F, $01, $09, $06, $02
.byte $04, $05, $07, $08, $0A, $0B, $0D, $0E
.byte $04, $05, $07, $08, $0A, $0B, $0D, $0E
COL2TGI: .byte $00, $04, $07, $02, $08, $09, $06, $0A
.byte $0B, $05, $0C, $0D, $01, $0E, $0F, $03
.byte $0B, $05, $0C, $0D, $01, $0E, $0F, $03
MAXY: .byte 47, 39
MAXY: .byte 47, 39
; ------------------------------------------------------------------------
.code
.code
; INIT: Changes an already installed device from text mode to graphics mode.
; Note that INIT/DONE may be called multiple times while the driver
@@ -116,168 +116,168 @@ MAXY: .byte 47, 39
; active, so there is no need to protect against that.
; Must set an error code: YES
INIT:
; Switch into graphics mode
bit $C082 ; Switch in ROM
jsr SETGR
bit MIXCLR
bit $C080 ; Switch in LC bank 2 for R/O
; Switch into graphics mode
bit $C082 ; Switch in ROM
jsr SETGR
bit MIXCLR
bit $C080 ; Switch in LC bank 2 for R/O
; Done, reset the error code
lda #TGI_ERR_OK
sta ERROR
sta MIX
; Done, reset the error code
lda #TGI_ERR_OK
sta ERROR
sta MIX
; Fall through
; Fall through
; INSTALL routine. Is called after the driver is loaded into memory. May
; initialize anything that has to be done just once. Is probably empty
; most of the time.
; Must set an error code: NO
INSTALL:
; Fall through
; Fall through
; UNINSTALL routine. Is called before the driver is removed from memory. May
; clean up anything done by INSTALL but is probably empty most of the time.
; Must set an error code: NO
UNINSTALL:
; Fall through
; Fall through
; SETVIEWPAGE: Set the visible page. Called with the new page in A (0..n).
; The page number is already checked to be valid by the graphics kernel.
; Must set an error code: NO (will only be called if page ok)
SETVIEWPAGE:
; Fall through
; Fall through
; SETDRAWPAGE: Set the drawable page. Called with the new page in A (0..n).
; The page number is already checked to be valid by the graphics kernel.
; Must set an error code: NO (will only be called if page ok)
SETDRAWPAGE:
; Fall through
; Fall through
; TEXTSTYLE: Set the style used when calling OUTTEXT. Text scaling in X and Y
; direction is passend in X/Y, the text direction is passed in A.
; Must set an error code: NO
TEXTSTYLE:
; Fall through
; Fall through
; OUTTEXT: Output text at X/Y = ptr1/ptr2 using the current color and the
; current text style. The text to output is given as a zero terminated
; string with address in ptr3.
; Must set an error code: NO
OUTTEXT:
rts
rts
; DONE: Will be called to switch the graphics device back into text mode.
; The graphics kernel will never call DONE when no graphics mode is active,
; so there is no need to protect against that.
; Must set an error code: NO
DONE:
bit $C082 ; Switch in ROM
jsr TEXT
jsr HOME
bit $C080 ; Switch in LC bank 2 for R/O
rts
bit $C082 ; Switch in ROM
jsr TEXT
jsr HOME
bit $C080 ; Switch in LC bank 2 for R/O
rts
; GETERROR: Return the error code in A and clear it.
GETERROR:
lda ERROR
ldx #TGI_ERR_OK
stx ERROR
rts
lda ERROR
ldx #TGI_ERR_OK
stx ERROR
rts
; CLEAR: Clears the screen.
; Must set an error code: NO
CLEAR:
bit $C082 ; Switch in ROM
lda COLOR ; Save current drawing color
pha
ldx MIX
ldy MAXY,x ; Max Y depends on 4 lines of text
jsr CLRSC2
pla
sta COLOR ; Restore current drawing color
bit $C080 ; Switch in LC bank 2 for R/O
rts
bit $C082 ; Switch in ROM
lda COLOR ; Save current drawing color
pha
ldx MIX
ldy MAXY,x ; Max Y depends on 4 lines of text
jsr CLRSC2
pla
sta COLOR ; Restore current drawing color
bit $C080 ; Switch in LC bank 2 for R/O
rts
; SETCOLOR: Set the drawing color (in A). The new color is already checked
; to be in a valid range (0..maxcolor-1).
; Must set an error code: NO (will only be called if color ok)
SETCOLOR:
bit $C082 ; Switch in ROM
tax
lda TGI2COL,x
jsr SETCOL
bit $C080 ; Switch in LC bank 2 for R/O
rts
bit $C082 ; Switch in ROM
tax
lda TGI2COL,x
jsr SETCOL
bit $C080 ; Switch in LC bank 2 for R/O
rts
; CONTROL: Platform/driver specific entry point.
; Must set an error code: YES
CONTROL:
; Check data msb and code to be 0
ora ptr1+1
bne err
; Check data msb and code to be 0
ora ptr1+1
bne err
; Check data lsb to be [0..1]
lda ptr1
cmp #1+1
bcs err
bit $C082 ; Switch in ROM
; Check data lsb to be [0..1]
lda ptr1
cmp #1+1
bcs err
bit $C082 ; Switch in ROM
; Switch 4 lines of text
tax
.assert MIXCLR + 1 = MIXSET, error
lda MIXCLR,x ; No BIT absolute,X available
; Switch 4 lines of text
tax
.assert MIXCLR + 1 = MIXSET, error
lda MIXCLR,x ; No BIT absolute,X available
; Save current switch setting
txa
sta MIX
bne text
; Save current switch setting
txa
sta MIX
bne text
; Clear 8 lines of graphics
lda COLOR ; Save current drawing color
pha
lda #39 ; Rightmost column
sta H2
ldx #40 ; First line
: txa
ldy #$00 ; Leftmost column
sty COLOR ; Black
jsr HLINE ; Preserves X
inx
cpx #47+1 ; Last line
bcc :-
pla
sta COLOR ; Restore current drawing color
bcs :+ ; Branch always
; Clear 8 lines of graphics
lda COLOR ; Save current drawing color
pha
lda #39 ; Rightmost column
sta H2
ldx #40 ; First line
: txa
ldy #$00 ; Leftmost column
sty COLOR ; Black
jsr HLINE ; Preserves X
inx
cpx #47+1 ; Last line
bcc :-
pla
sta COLOR ; Restore current drawing color
bcs :+ ; Branch always
; Clear 4 lines of text
text: jsr HOME
: bit $C080 ; Switch in LC bank 2 for R/O
; Clear 4 lines of text
text: jsr HOME
: bit $C080 ; Switch in LC bank 2 for R/O
; Done, reset the error code
lda #TGI_ERR_OK
beq :+ ; Branch always
; Done, reset the error code
lda #TGI_ERR_OK
beq :+ ; Branch always
; Done, set the error code
err: lda #TGI_ERR_INV_ARG
: sta ERROR
rts
; Done, set the error code
err: lda #TGI_ERR_INV_ARG
: sta ERROR
rts
; SETPALETTE: Set the palette (not available with all drivers/hardware).
; A pointer to the palette is passed in ptr1. Must set an error if palettes
; are not supported
; Must set an error code: YES
SETPALETTE:
lda #TGI_ERR_INV_FUNC
sta ERROR
rts
lda #TGI_ERR_INV_FUNC
sta ERROR
rts
; GETPALETTE: Return the current palette in A/X. Even drivers that cannot
; set the palette should return the default palette here, so there's no
; way for this function to fail.
; Must set an error code: NO
GETPALETTE:
; Fall through
; Fall through
; GETDEFPALETTE: Return the default palette for the driver in A/X. All
; drivers should return something reasonable here, even drivers that don't
@@ -285,63 +285,63 @@ GETPALETTE:
; of the (not changeable) palette.
; Must set an error code: NO (all drivers must have a default palette)
GETDEFPALETTE:
lda #<DEFPALETTE
ldx #>DEFPALETTE
rts
lda #<DEFPALETTE
ldx #>DEFPALETTE
rts
; SETPIXEL: Draw one pixel at X1/Y1 = ptr1/ptr2 with the current drawing
; color. The coordinates passed to this function are never outside the
; visible screen area, so there is no need for clipping inside this function.
; Must set an error code: NO
SETPIXEL:
bit $C082 ; Switch in ROM
ldy X1
lda Y1
jsr PLOT
bit $C080 ; Switch in LC bank 2 for R/O
rts
bit $C082 ; Switch in ROM
ldy X1
lda Y1
jsr PLOT
bit $C080 ; Switch in LC bank 2 for R/O
rts
; GETPIXEL: Read the color value of a pixel and return it in A/X. The
; coordinates passed to this function are never outside the visible screen
; area, so there is no need for clipping inside this function.
GETPIXEL:
bit $C082 ; Switch in ROM
ldy X1
lda Y1
jsr SCRN
tax
lda COL2TGI,x
ldx #$00
bit $C080 ; Switch in LC bank 2 for R/O
rts
bit $C082 ; Switch in ROM
ldy X1
lda Y1
jsr SCRN
tax
lda COL2TGI,x
ldx #$00
bit $C080 ; Switch in LC bank 2 for R/O
rts
; BAR: Draw a filled rectangle with the corners X1/Y1, X2/Y2, where
; X1/Y1 = ptr1/ptr2 and X2/Y2 = ptr3/ptr4 using the current drawing color.
; Contrary to most other functions, the graphics kernel will sort and clip
; the coordinates before calling the driver, so on entry the following
; conditions are valid:
; X1 <= X2
; Y1 <= Y2
; (X1 >= 0) && (X1 < XRES)
; (X2 >= 0) && (X2 < XRES)
; (Y1 >= 0) && (Y1 < YRES)
; (Y2 >= 0) && (Y2 < YRES)
; X1 <= X2
; Y1 <= Y2
; (X1 >= 0) && (X1 < XRES)
; (X2 >= 0) && (X2 < XRES)
; (Y1 >= 0) && (Y1 < YRES)
; (Y2 >= 0) && (Y2 < YRES)
; Must set an error code: NO
BAR:
bit $C082 ; Switch in ROM
lda X2
sta H2
inc Y2
ldx Y1
: txa
ldy X1
jsr HLINE ; Preserves X
inx
cpx Y2
bcc :-
bit $C080 ; Switch in LC bank 2 for R/O
rts
bit $C082 ; Switch in ROM
lda X2
sta H2
inc Y2
ldx Y1
: txa
ldy X1
jsr HLINE ; Preserves X
inx
cpx Y2
bcc :-
bit $C080 ; Switch in LC bank 2 for R/O
rts
; ------------------------------------------------------------------------
.include "../../tgi/tgidrv_line.inc"
.include "../../tgi/tgidrv_line.inc"