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DONE, GETPALETTE and GETDEFPALETTE will no longer return errors.

Browse Source 
Use TGI_API_VERSION.


git-svn-id: svn://svn.cc65.org/cc65/trunk@2568 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2003-10-23 09:29:12 +00:00
parent 24d58573fe
commit ca72fb45b4
3 changed files with 89 additions and 80 deletions
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53
libsrc/c128/c128-640-200-2.s
View File

@ -4,23 +4,24 @@
; 23.12.2002
;
; NOTES:
; For any smart monkey that will try to optimize this: PLEASE do tests on real VDC,
; not only VICE.
; For any smart monkey that will try to optimize this: PLEASE do tests on
; real VDC, not only VICE.
;
; Only DONE routine contains C128-mode specific stuff, everything else will work in
; C64-mode of C128 (C64 needs full VDC init then).
; Only DONE routine contains C128-mode specific stuff, everything else will
; work in C64-mode of C128 (C64 needs full VDC init then).
;
; With special initialization and CALC we can get 320x200 double-pixel mode.
;
; Color translation values for BROWN and GRAY3 are obviously wrong, they could
; be replaced by equiv. of ORANGE and GRAY2 but this would give only 14 of 16 colors available.
; Color translation values for BROWN and GRAY3 are obviously wrong, they
; could be replaced by equiv. of ORANGE and GRAY2 but this would give only
; 14 of 16 colors available.
;
; Register 25 ($19) is said to require different value for VDC v1, but I couldn't find what
; it should be.
; Register 25 ($19) is said to require different value for VDC v1, but I
; couldn't find what it should be.
.include "zeropage.inc"
.include "zeropage.inc"
.include "tgi-kernel.inc"
.include "tgi-kernel.inc"
.include "tgi-mode.inc"
.include "tgi-error.inc"
@ -53,7 +54,7 @@ VDC_DATA = 31
; capabilities of the driver
.byte $74, $67, $69 ; "tgi"
.byte $00 ; TGI version number
.byte TGI_API_VERSION ; TGI API version number
xres: .word 640 ; X resolution
yres: .word 200 ; Y resolution
.byte 2 ; Number of drawing colors
@ -63,10 +64,7 @@ pages: .byte 1 ; Number of screens available
.res 4, $00 ; Reserved for future extensions
; Next comes the jump table. Currently all entries must be valid and may point
; to an RTS for test versions (function not implemented). A future version may
; allow for emulation: In this case the vector will be zero. Emulation means
; that the graphics kernel will emulate the function by using lower level
; primitives - for example ploting a line by using calls to SETPIXEL.
; to an RTS for test versions (function not implemented).
.word INSTALL
.word UNINSTALL
@ -322,7 +320,7 @@ INIT:
; 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: YES
; Must set an error code: NO
;
DONE:
@ -346,8 +344,7 @@ DONE:
jsr VDCWriteReg ; restore color (background)
lda #$47
ldx #VDC_HSCROLL
jsr VDCWriteReg ; switch to text screen
; fall through to GETERROR in order to clear ERROR status
jmp VDCWriteReg ; switch to text screen
; ------------------------------------------------------------------------
; GETERROR: Return the error code in A and clear it.
@ -465,13 +462,17 @@ SETPALETTE:
ora COLTRANS,y
ldx #VDC_COLORS
jmp VDCWriteReg
jsr VDCWriteReg ; Clear error code
lda #TGI_ERR_OK
sta ERROR
rts
; ------------------------------------------------------------------------
; GETPALETTE: Return the current palette in A/X. Must return NULL and set an
; error if palettes are not supported.
; 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: YES
; Must set an error code: NO
;
GETPALETTE:
@ -480,10 +481,12 @@ GETPALETTE:
rts
; ------------------------------------------------------------------------
; GETDEFPALETTE: Return the default palette for the driver in A/X. Must
; return NULL and set an error of palettes are not supported.
; GETDEFPALETTE: Return the default palette for the driver in A/X. All
; drivers should return something reasonable here, even drivers that don't
; support palettes, otherwise the caller has no way to determine the colors
; of the (not changeable) palette.
;
; Must set an error code: YES
; Must set an error code: NO (all drivers must have a default palette)
;
GETDEFPALETTE:

55
libsrc/c128/c128-640-480-2.s
View File

@ -5,23 +5,24 @@
; 23.12.2002
;
; NOTES:
; For any smart monkey that will try to optimize this: PLEASE do tests on real VDC,
; not only VICE.
; For any smart monkey that will try to optimize this: PLEASE do tests on
; real VDC, not only VICE.
;
; Only DONE routine contains C128-mode specific stuff, everything else will work in
; C64-mode of C128 (C64 needs full VDC init then).
; Only DONE routine contains C128-mode specific stuff, everything else will
; work in C64-mode of C128 (C64 needs full VDC init then).
;
; With special initialization and CALC we can get 320x200 double-pixel mode.
;
; Color translation values for BROWN and GRAY3 are obviously wrong, they could
; be replaced by equiv. of ORANGE and GRAY2 but this would give only 14 of 16 colors available.
; Color translation values for BROWN and GRAY3 are obviously wrong, they
; could be replaced by equiv. of ORANGE and GRAY2 but this would give only
; 14 of 16 colors available.
;
; Register 25 ($19) is said to require different value for VDC v1, but I couldn't find what
; it should be.
; Register 25 ($19) is said to require different value for VDC v1, but I
; couldn't find what it should be.
.include "zeropage.inc"
.include "zeropage.inc"
.include "tgi-kernel.inc"
.include "tgi-kernel.inc"
.include "tgi-mode.inc"
.include "tgi-error.inc"
@ -54,7 +55,7 @@ VDC_DATA = 31
; capabilities of the driver
.byte $74, $67, $69 ; "tgi"
.byte $00 ; TGI version number
.byte TGI_API_VERSION ; TGI version number
xres: .word 640 ; X resolution
yres: .word 480 ; Y resolution
.byte 2 ; Number of drawing colors
@ -64,10 +65,7 @@ pages: .byte 0 ; Number of screens available
.res 4, $00 ; Reserved for future extensions
; Next comes the jump table. Currently all entries must be valid and may point
; to an RTS for test versions (function not implemented). A future version may
; allow for emulation: In this case the vector will be zero. Emulation means
; that the graphics kernel will emulate the function by using lower level
; primitives - for example ploting a line by using calls to SETPIXEL.
; to an RTS for test versions (function not implemented).
.word INSTALL
.word UNINSTALL
@ -280,7 +278,7 @@ UNINSTALL:
; ------------------------------------------------------------------------
; INIT: Changes an already installed device from text mode to graphics
; mode.
; mode.
; Note that INIT/DONE may be called multiple times while the driver
; is loaded, while INSTALL is only called once, so any code that is needed
; to initializes variables and so on must go here. Setting palette and
@ -331,7 +329,7 @@ INIT:
; 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: YES
; Must set an error code: NO
;
DONE:
@ -355,8 +353,7 @@ DONE:
jsr VDCWriteReg ; restore color (background)
lda #$47
ldx #VDC_HSCROLL
jsr VDCWriteReg ; switch to text screen
; fall through to GETERROR in order to clear ERROR status
jmp VDCWriteReg ; switch to text screen
; ------------------------------------------------------------------------
; GETERROR: Return the error code in A and clear it.
@ -463,13 +460,17 @@ SETPALETTE:
ora COLTRANS,y
ldx #VDC_COLORS
jmp VDCWriteReg
jsr VDCWriteReg
lda #TGI_ERR_OK ; Clear error code
sta ERROR
rts
; ------------------------------------------------------------------------
; GETPALETTE: Return the current palette in A/X. Must return NULL and set an
; error if palettes are not supported.
; 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: YES
; Must set an error code: NO
;
GETPALETTE:
@ -478,10 +479,12 @@ GETPALETTE:
rts
; ------------------------------------------------------------------------
; GETDEFPALETTE: Return the default palette for the driver in A/X. Must
; return NULL and set an error of palettes are not supported.
; GETDEFPALETTE: Return the default palette for the driver in A/X. All
; drivers should return something reasonable here, even drivers that don't
; support palettes, otherwise the caller has no way to determine the colors
; of the (not changeable) palette.
;
; Must set an error code: YES
; Must set an error code: NO (all drivers must have a default palette)
;
GETDEFPALETTE:

61
libsrc/c64/c64-320-200-2.s
View File

@ -23,7 +23,7 @@
; capabilities of the driver
.byte $74, $67, $69 ; "tgi"
.byte $00 ; TGI version number
.byte TGI_API_VERSION ; TGI API version number
.word 320 ; X resolution
.word 200 ; Y resolution
.byte 2 ; Number of drawing colors
@ -66,20 +66,21 @@
; 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
RADIUS = tmp1
X1 := ptr1
Y1 := ptr2
X2 := ptr3
Y2 := ptr4
RADIUS := tmp1
ROW = tmp2 ; Bitmap row...
COL = tmp3 ; ...and column, both set by PLOT
TEMP = tmp4
TEMP2 = sreg
POINT = regsave
ROW := tmp2 ; Bitmap row...
COL := tmp3 ; ...and column, both set by PLOT
TEMP := tmp4
TEMP2 := sreg
POINT := regsave
INRANGE := regsave+2 ; PLOT variable, $00 = coordinates in range
CHUNK = X2 ; Used in the line routine
OLDCHUNK = X2+1 ; Dito
CHUNK := X2 ; Used in the line routine
OLDCHUNK := X2+1 ; Dito
; Absolute variables used in the code
@ -93,9 +94,6 @@ BITMASK: .res 1 ; $00 = clear, $FF = set pixels
; INIT/DONE
OLDD018: .res 1 ; Old register value
; PLOT variables
INRANGE: .res 1 ; $00 = coordinates in range
; Line routine stuff
DX: .res 2
DY: .res 2
@ -206,7 +204,7 @@ DONE1: sta $D011
; 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: YES
; Must set an error code: NO
;
DONE: lda $DD02 ; Set the data direction regs
@ -221,7 +219,8 @@ DONE: lda $DD02 ; Set the data direction regs
lda $D011
and #<~$20
jmp DONE1
sta $D011
rts
; ------------------------------------------------------------------------
; GETERROR: Return the error code in A and clear it.
@ -367,15 +366,18 @@ SETPALETTE:
sta $01
cli
; Done
; Done, reset the error code
lda #TGI_ERR_OK
sta ERROR
rts
; ------------------------------------------------------------------------
; GETPALETTE: Return the current palette in A/X. Must return NULL and set an
; error if palettes are not supported.
; 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: YES
; Must set an error code: NO
;
GETPALETTE:
@ -384,10 +386,12 @@ GETPALETTE:
rts
; ------------------------------------------------------------------------
; GETDEFPALETTE: Return the default palette for the driver in A/X. Must
; return NULL and set an error of palettes are not supported.
; GETDEFPALETTE: Return the default palette for the driver in A/X. All
; drivers should return something reasonable here, even drivers that don't
; support palettes, otherwise the caller has no way to determine the colors
; of the (not changeable) palette.
;
; Must set an error code: YES
; Must set an error code: NO (all drivers must have a default palette)
;
GETDEFPALETTE:
@ -769,9 +773,7 @@ FIXY: cpy #255 ;Y=255 or Y=8
@CONT1: inc ROW
bne @DONE
lda COL
bmi @DONE
lda #00
sta INRANGE
bpl @CLEAR
@DONE: rts
@DECPTR: ;Okay, subtract 320 then
@ -790,9 +792,10 @@ FIXY: cpy #255 ;Y=255 or Y=8
bne @DONE
lda COL
bmi @DONE
lda #00
@CLEAR: lda #00
sta INRANGE
rts
@TOAST: pla ;Remove old return address
pla
jmp EXIT ;Restore interrupts, etc.