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https://github.com/bobbimanners/Applecorn.git
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Merge JGH PR #112: 'VDU 20,24,26,28,29'
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Bobbi Webber-Manners
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applecorn.po
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applecorn.po
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196
auxmem.vdu.s
196
auxmem.vdu.s
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@ -16,6 +16,7 @@
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* 26-Sep-2021 Merged together JGH VDU updates and Bobbi GFX updates.
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* Moved all graphics screen access code to gfx.s
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* All 65816-specific code disabled.
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* 29-Sep-2021 Windows VDU 26, VDU 28, VDU 29, colours VDU 20.
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**********************************
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@ -79,7 +80,7 @@ PIXELPOSNX EQU VDUVARS+$20 ; current graphics X in pixels
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PIXELPOSNY EQU VDUVARS+$22 ; current graphics Y in pixels
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PIXELLASTX EQU VDUVARS+$24 ; last graphics X in pixels
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PIXELLASTY EQU VDUVARS+$26 ; last graphics Y in pixels
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VDUWINEND EQU VDUVARS+$27 ; VDU 26 clears up to here
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VDUWINEND EQU PIXELLASTY+1 ; VDU 26 clears up to here
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*
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CURSOR EQU VDUVARS+$28 ; character used for cursor
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CURSORCP EQU VDUVARS+$29 ; character used for copy cursor
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@ -88,8 +89,9 @@ CURSORED EQU VDUVARS+$2A ; character used for edit cursor
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VDUQ EQU VDUVARS+$2B ; $2B..$33
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VDUQLAST EQU VDUQ+1 ; Neatly becomes VDUVARS+$2C
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VDUQPLOT EQU VDUQ+5 ; Neatly becomes VDUVARS+$30
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VDUQCOORD EQU VDUQ+5
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*
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VDUBORDER EQU VDUVARS+$34 ; Border colour
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VDUVAR34 EQU VDUVARS+$34
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VDUMODE EQU VDUVARS+$35 ; # current MODE
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VDUSCREEN EQU VDUVARS+$36 ; # MODE type
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TXTFGD EQU VDUVARS+$37 ; # Text foreground
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@ -98,7 +100,9 @@ GFXFGD EQU VDUVARS+$39 ; # Graphics foreground
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GFXBGD EQU VDUVARS+$3A ; # Graphics background
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GFXPLOTFGD EQU VDUVARS+$3B ; # Foreground GCOL action
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GFXPLOTBGD EQU VDUVARS+$3C ; # Background GCOL action
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VDUVAR3D EQU VDUVARS+$3D
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VDUBORDER EQU VDUVARS+$3D ; Border colour
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VDUCOLEND EQU VDUBORDER ; VDU 20 clears up to here
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*
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VDUVAR3E EQU VDUVARS+$3E
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VDUBYTES EQU VDUVARS+$3F ; bytes per char, 1=text only
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VDUCOLOURS EQU VDUVARS+$40 ; # colours-1
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@ -109,20 +113,20 @@ VDUWORKSZ EQU VDUVAREND-VDUWORKSP+1
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* Screen definitions
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* 1 3 6 7 ; MODEs sort-of completed
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SCNTXTMAXX DB 79,39,19,79,39,19,39,39 ; Max text column
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SCNTXTMAXY DB 23,23,23,23,23,23,23,23 ; Max text row
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SCNBYTES DB 01,08,01,01,01,01,01,01 ; Bytes per character
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SCNCOLOURS DB 15,15,15,15,15,15,15,15 ; Colours-1
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SCNPIXELS DB 00,07,00,00,00,00,00,00 ; Pixels per byte
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SCNTYPE DB 01,128,0,01,00,00,00,64 ; Screen type
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SCNTXTMAXX DB 79,39,19,79,39,19,39,39 ; Max text column
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SCNTXTMAXY DB 23,23,23,23,23,23,23,23 ; Max text row
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SCNBYTES DB 01,08,01,01,01,01,01,01 ; Bytes per character
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SCNCOLOURS DB 15,07,15,01,01,15,01,01 ; Colours-1
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SCNPIXELS DB 00,07,00,00,00,00,00,00 ; Pixels per byte
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SCNTYPE DB 01,128,0,01,00,00,00,64 ; Screen type
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* b7=FastDraw
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* b6=Teletext
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* b0=40COL/80COL
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* Colour table
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CLRTRANS16 DB 00,01,04,08,02,14,11,10
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DB 05,09,12,13,06,03,07,15
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CLRTRANS8 DB 00,05,01,01,06,02,02,07
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CLRTRANS16 DB 00,01,04,08,02,14,11,10
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DB 05,09,12,13,06,03,07,15
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CLRTRANS8 DB 00,05,01,01,06,02,02,07
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********************************************************************
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* Note that we use PAGE2 80 column mode ($800-$BFF in main and aux)
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@ -356,7 +360,7 @@ PRCHR4 JSR CHARADDR ; Find character address
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>>> WRTMAIN
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STA [VDUADDR],Y
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>>> WRTAUX
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BRA PRCHR8
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BRA PRCHR8
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PRCHR5 PHP ; Disable IRQs while
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SEI ; toggling memory
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BCC PRCHR6 ; Aux memory
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@ -411,7 +415,7 @@ GETCHR8 LDA [VDUADDR],Y ; Get character
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GETCHR9 TYA
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EOR #$80
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LDY VDUMODE ; Y=MODE
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TAX ; X=char
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TAX ; X=char, set EQ/NE
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RTS
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@ -538,42 +542,12 @@ VDU31 LDY VDUQ+8
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:DONE RTS
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* VDU 26 - Reset to default windows
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VDU26 LDA #$F7
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JSR CLRSTATUS ; Clear 'soft window'
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VDU26A LDX #VDUWINEND-VDUVARS
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LDA #$00
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VDU26LP STA VDUVARS,X ; Clear all windows
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DEX ; and all coords
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BPL VDU26LP ; and origin, etc.
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LDY VDUMODE
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LDA SCNTXTMAXY,Y
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STA TXTWINBOT ; Text window height
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STA GFXWINTOP ; Graphics height
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LDX #GFXWINTOP-VDUVARS
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LDA SCNTXTMAXX,Y
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STA TXTWINRGT ; Text window width
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STA GFXWINRGT ; Graphics width
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LDX #GFXWINRGT-VDUVARS
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* TO DO *
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RTS
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* VDU 24,left;bottom;right;top; - define graphics window
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VDU24 RTS
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* VDU 28,left,bottom,right,top - define text window
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VDU28 RTS
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* VDU 29,x;y; - define graphics origin
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VDU29 RTS
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* Initialise VDU driver
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***********************
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* On entry, A=MODE to start in
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*
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VDUINIT STA VDUQ+8
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* JSR FONTIMPLODE ; Reset VDU 23 font
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* JSR FONTIMPLODE ; Reset VDU 23 font
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* VDU 22 - MODE n
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*****************
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@ -761,18 +735,30 @@ SCR1SOFT JMP HSCR1LINE
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* VDU 16 - CLG, clear graphics window
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VDU16 JMP HSCRCLEAR
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* VDU 20 - Reset to default colours
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VDU20 LDA #$00 ; *TEMP*
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STA $C034
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LDA #$F0
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STA $C022
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VDU20 LDA #$F0
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STA $C022 ; Set text palette
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LDX #VDUCOLEND-TXTFGD
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LDA #$00
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LDX #$07
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JSR HSCRSETGCOL
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LDA #$00
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LDX #$80
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JSR HSCRSETGCOL
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RTS
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VDU20LP STA TXTFGD,X ; Clear all colours
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DEX ; and gcol actions
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BPL VDU20LP
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STA $C034 ; Set border
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LDA #$80
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JSR HSCRSETTCOL ; Set txt background
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LDX #$00
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LDA #$80
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JSR HSCRSETGCOL ; Set gfx background
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LDA VDUCOLOURS
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AND #$07
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PHA
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STA TXTFGD ; Note txt foreground
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JSR HSCRSETTCOL ; Set txt foreground
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LDX #$00
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PLA
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STA GFXFGD ; Note gfx foreground
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JMP HSCRSETGCOL ; Set gfx foreground
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* VDU 17 - COLOUR n - select text or border colour
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VDU17 LDA VDUQ+8 ; *TEMP*
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@ -803,8 +789,8 @@ VDU18 LDA VDUQ+8 ; GCOL colour
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PHP
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ROL A
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PLP
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ROR A ; A=GCOL colour
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LDX VDUQ+7 ; X=GCOL action
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ROR A ; GCOL colour
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LDX VDUQ+7 ; GCOL action
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* TO DO: set local VDU variables
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JSR HSCRSETGCOL
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RTS
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@ -812,14 +798,99 @@ VDU18 LDA VDUQ+8 ; GCOL colour
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* VDU 19 - Select palette colours
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VDU19 RTS
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* VDU 23 - Program video system and define characters
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VDU23 RTS
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* VDU 26 - Reset to default windows
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VDU26 LDA #$F7
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JSR CLRSTATUS ; Clear 'soft window'
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VDU26A LDX #VDUWINEND-VDUVARS
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LDA #$00
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VDU26LP STA VDUVARS,X ; Clear all windows
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DEX ; and all coords
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BPL VDU26LP ; and origin, etc.
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LDY VDUMODE
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LDA SCNTXTMAXY,Y
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STA TXTWINBOT ; Text window height
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LDA SCNTXTMAXX,Y
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STA TXTWINRGT ; Text window width
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LDY VDUPIXELS
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BEQ VDU26QUIT ; No graphics
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LDX #GFXWINRGT-VDUVARS
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JSR VDU26SCALE ; GFXWID=TXTWID*PIXELS-1
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LDA TXTWINBOT
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LDY #8 ; GFXHGT=TXTHGT*8-1
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LDX #GFXWINTOP-VDUVARS
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*
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* Convert text count to pixel count
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* VDUVARS,X=(A+1)*Y-1
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VDU26SCALE PHA
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CLC
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ADC VDUVARS+0,X
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ORA #$01
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STA VDUVARS+0,X
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LDA VDUVARS+1,X
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ADC #$00
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STA VDUVARS+1,X
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PLA
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DEY
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BNE VDU26SCALE
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VDU26QUIT RTS
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* VDU 28,left,bottom,right,top - define text window
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VDU28 LDX VDUMODE
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LDA VDUQCOORD+2 ; right
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CMP VDUQCOORD+0 ; left
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BCC VDUCOPYEXIT ; right<left
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CMP SCNTXTMAXX,X
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BEQ VDU28B
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BCS VDUCOPYEXIT ; right>width
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VDU28B LDA VDUQCOORD+1 ; bottom
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CMP VDUQCOORD+3 ; top
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BCC VDUCOPYEXIT ; bottom<top
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CMP SCNTXTMAXY,X
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BEQ VDU28C
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BCS VDUCOPYEXIT ; top>height
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VDU28C LDY #TXTWINLFT+3-VDUVARS ; Copy to txt window params
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BNE VDUCOPY4
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* VDU 24,left;bottom;right;top; - define graphics window
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VDU24 RTS
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* If right<left, exit
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* If right>width, exit
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* If top<bottom, exit
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* If top>height, exit
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* Scale parameters
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LDY #GFXWINLFT+7-VDUVARS ; Copy to gfx window params
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LDA #$08
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BNE COPYVDUQ
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* VDU 29,x;y; - define graphics origin
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VDU29 LDY #GFXORIGX+3-VDUVARS ; Copy to ORIGIN
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* Copy four bytes from VDU queue to VDU workspace
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VDUCOPY4 LDA #$04 ; 4 bytes to copy
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* Copy parameters in VDU Queue to VDU workspace
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COPYVDUQ LDX #VDUQ+$08-VDUVARS ; End of VDU queue
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* Copy A bytes from VDUVARS,X to VDUVARS,Y
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VDUCOPY STA VDUTEMP
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VDUCOPYLP LDA VDUVARS,X
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STA VDUVARS,Y
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DEX
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DEY
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DEC VDUTEMP
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BNE VDUCOPYLP
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VDUCOPYEXIT RTS
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* VDU 25,k,x;y; - PLOT k,x,y - PLOT point, line, etc.
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* k is in VDUQ+4
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* x is in VDUQ+5,VDUQ+6
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* y is in VDUQ+7,VDUQ+8
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VDU25 JMP HGRPLOT
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VDU25 LDA VDUPIXELS
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BEQ VDU25NULL
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JMP HGRPLOT
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VDU25NULL RTS
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* TO DO:
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* coord=coord+origin
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* scale coord
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@ -828,6 +899,9 @@ VDU25 JMP HGRPLOT
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* check for Escape
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* VDU 23 - Program video system and define characters
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VDU23 RTS
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* OSBYTE &A0 - Read VDU variable
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********************************
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@ -847,5 +921,3 @@ BYTEA02 LDY VDUVARS+1,X
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* VDU 1 - Send one character to printer
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VDU01 RTS
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