update to 23+FPS, self-loading
This commit is contained in:
Charles Mangin
GitHub
parent
21aa3ef6eb
commit
4525ff15b8
281
GREENSCALE.s
281
GREENSCALE.s
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@ -4,11 +4,8 @@
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* Low res monochrome image display
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*
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* to do:
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* detect virtualII vs openemu or real hardware
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* (or other emulator)
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*
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* further optimization, to speed up framerate
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*
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* determine frame length from data length
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**************************************************
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* Variables
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**************************************************
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@ -27,6 +24,7 @@ IMGHI EQU $CE ; image data addres, HI
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IMGLO EQU $CD ; image data addres, LO
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FRAMENUM EQU $1D ; which frame of the anim
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FRAMES EQU $1E ; total frames
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**************************************************
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* Apple Standard Memory Locations
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@ -51,7 +49,7 @@ RAMWRTMAIN EQU $C004
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SETAN3 EQU $C05E ;Set annunciator-3 output to 0
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SET80VID EQU $C00D ;enable 80-column display mode (WR-only)
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CLR80VID EQU $C00C
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HOME EQU $FC58 ; clear the text screen
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HOME EQU $FC58 ; clear the text screen
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CH EQU $24 ; cursor Horiz
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CV EQU $25 ; cursor Vert
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VTAB EQU $FC22 ; Sets the cursor vertical position (from CV)
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@ -62,14 +60,22 @@ STROUT EQU $DB3A ;Y=String ptr high, A=String ptr low
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ALTTEXT EQU $C055
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ALTTEXTOFF EQU $C054
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ROMINIT EQU $FB2F
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ROMSETKBD EQU $FE89
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ROMSETVID EQU $FE93
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ROMINIT EQU $FB2F
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ROMSETKBD EQU $FE89
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ROMSETVID EQU $FE93
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ALTCHAR EQU $C00F ; enables alternative character set - mousetext
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ALTCHAR EQU $C00F ; enables alternative character set - mousetext
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BLINK EQU $F3
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SPEED EQU $F1
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BLINK EQU $F3
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SPEED EQU $F1
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BELL EQU $FF3A ; Monitor BELL routine
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CROUT EQU $FD8E ; Monitor CROUT routine
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PRBYTE EQU $FDDA ; Monitor PRBYTE routine
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MLI EQU $BF00 ; ProDOS system call
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OPENCMD EQU $C8 ; OPEN command index
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READCMD EQU $CA ; READ command index
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CLOSECMD EQU $CC ; CLOSE command index
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**************************************************
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@ -78,6 +84,10 @@ SPEED EQU $F1
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ORG $2000 ; PROGRAM DATA STARTS AT $2000
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JSR BLOAD ; BLOAD DATA
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JSR HOWMANYFRAMES ; how big is the animation data?
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JSR ROMSETVID ; Init char output hook at $36/$37
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JSR ROMSETKBD ; Init key input hook at $38/$39
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JSR ROMINIT ; GR/HGR off, Text page 1
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@ -94,35 +104,35 @@ SPEED EQU $F1
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JSR CLRLORES ; clear screen
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JMP MAIN
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END STA STROBE
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STA ALTTEXTOFF
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STA TXTSET
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JSR HOME
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RTS ; END
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JSR EMULATORCHECK ; check for Virtual II
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JMP MAIN ; running in VII, go ahead.
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JSR COLORSWAP ; otherwise, swap the color table
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*** to do
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**************************************************
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* MAIN LOOP
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**************************************************
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MAIN
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LDA #$40 ; image data starts at $4000
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LDA DATAHI ; image data starts at end of code.
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STA IMGHI
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LDA #$00
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LDA DATALO
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STA IMGLO
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LDA #$0
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STA FRAMENUM ; frame #0
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NEXTFRAME LDA #$00
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STA PLOTROW
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TAY ; Y IS PLOTCOLUMN
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LDY #$27 ; Y IS PLOTCOLUMN
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MAINLOOP
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LDA (IMGLO) ; load byte at IMGLO,IMGHI
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LDA (IMGLO),Y ; load byte at IMGLO,IMGHI + COLUMN
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; look up color from lookup table
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TAX
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LDA COLORTABLEV2,X
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LDA COLORTABLE,X
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STA CHAR ; put that converted BYTE into CHAR
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PLOTCHAR
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@ -135,27 +145,137 @@ LOADQUICK
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LDA CHAR
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STA ($0),Y ; store byte at LINE + COLUMN
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INC IMGLO ; increment IMGLO
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BNE INCCOLUMN ; not rolled over, skip
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INC IMGHI ; if IMGLO == 0 increment IMGHI
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INCCOLUMN ; next column of 2 pixels
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INY ; Y IS PLOTCOLUMN
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CPY #$28 ; loop at col 40
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BNE MAINLOOP
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LDY #$0 ; reset to col 0
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DEY ; Y IS PLOTCOLUMN
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BPL MAINLOOP
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LDY #$27 ; reset to col 0
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INCROW INC PLOTROW
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LDA PLOTROW
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LDA IMGLO
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CLC
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ADC #$28
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STA IMGLO
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BCS INCHI
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CMPROW LDA PLOTROW
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CMP #$18
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BNE MAINLOOP
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LOOPTY INC FRAMENUM
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LDA FRAMENUM
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CMP #$08 ; *** how many frames? ***
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BEQ MAIN
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JMP NEXTFRAME ; wait for input...
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CMP FRAMES ; *** how many frames? ***
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BEQ MAIN ; start over at frame 1
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JMP NEXTFRAME ; next frame in sequence
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INCHI INC IMGHI
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BCS CMPROW
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**************************************************
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* Check to see if I'm running in Virtual II or
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* real hardware (or a different emulator)
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* CARRY SET == running in VII
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**************************************************
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EMULATORCHECK
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LDX #$00
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CLC
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CHKVII
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INX
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BEQ FOUNDVII
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LDA $C04F
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BEQ CHKVII
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CLC ;set return value: no Virtual II
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RTS
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FOUNDVII
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SEC ;set return value: found Virtual II
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RTS
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**************************************************
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* Swap the color table with one for real
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* hardware/OpenEmulator
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**************************************************
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COLORSWAP
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LDX #$00
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SWAPLOOP LDA ALTCOLORTABLE,X
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STA COLORTABLE,X
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INX
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BNE SWAPLOOP
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RTS
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**************************************************
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* Load "banana" into memory
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*
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**************************************************
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BLOAD JSR OPEN ;open "DATA"
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JSR READ
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JSR ERROR
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JSR CLOSE
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JSR ERROR
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RTS ;Otherwise done
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OPEN JSR MLI ;Perform call
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DB OPENCMD ;CREATE command number
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DW OPENLIST ;Pointer to parameter list
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JSR ERROR ;If error, display it
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LDA REFERENCE
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STA READLIST+1
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STA CLOSELIST+1
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RTS
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READ JSR MLI
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DB READCMD
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DW READLIST
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RTS
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CLOSE JSR MLI
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DB CLOSECMD
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DW CLOSELIST
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RTS
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ERROR JSR PRBYTE ;Print error code
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JSR BELL ;Ring the bell
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JSR CROUT ;Print a carriage return
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RTS
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OPENLIST DB $03 ; parameter list for OPEN command
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DW FILENAME
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DB $00,$08 ; buffer at $800 ?
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REFERENCE DB $00 ; reference to opened file
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READLIST DB $04
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DB $00 ; REFERENCE written here after OPEN
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DB <BEGINDATA,>BEGINDATA ; write to end of code
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DB $FF,$FF ; read as much as $FFFF - should error out with EOF before that.
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TRANSFERRED DB $00,$00
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CLOSELIST DB $01
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DB $00
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FILENAME DB ENDNAME-NAME ;Length of name
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NAME ASC '/GREENSCALE/DATA' ;followed by the name
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ENDNAME EQU *
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**************************************************
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* How many frames have transferred?
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* up to 32 ($20) based on TRANSFERRED+1
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**************************************************
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HOWMANYFRAMES LDX #$00 ; X=0
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LDA TRANSFERRED+1 ; LDA TRANSFERRED amt hi byte
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HOWMANYLOOP CMP FRAMESTABLE,X ; compare A to FRAMESTABLE,X
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BEQ HOWMANYSET ; if equal, X frames loaded.
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INX
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CPX $20
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BEQ HOWMANYSET ; max 32 frames
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JMP HOWMANYLOOP ; otherwise, INX, Loop
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HOWMANYSET INX
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STX FRAMES
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RTS
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**************************************************
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* Data Tables
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@ -167,7 +287,7 @@ LOOPTY INC FRAMENUM
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*
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**************************************************
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COLORTABLEV2 HEX 00,02,06,01,04,05,08,03,0C,09,07,0A,0B,0E,0D,0F ; Low res colors from darkest to lightest for Virtual ][
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COLORTABLE HEX 00,02,06,01,04,05,08,03,0C,09,07,0A,0B,0E,0D,0F ; Low res colors from darkest to lightest for Virtual ][
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HEX 20,22,26,21,24,25,28,23,2C,29,27,2A,2B,2E,2D,2F
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HEX 60,62,66,61,64,65,68,63,6C,69,67,6A,6B,6E,6D,6F
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HEX 10,12,16,11,14,15,18,13,1C,19,17,1A,1B,1E,1D,1F
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@ -184,14 +304,26 @@ COLORTABLEV2 HEX 00,02,06,01,04,05,08,03,0C,09,07,0A,0B,0E,0D,0F ; Low res colo
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HEX D0,D2,D6,D1,D4,D5,D8,D3,DC,D9,D7,DA,DB,DE,DD,DF
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HEX F0,F2,F6,F1,F4,F5,F8,F3,FC,F9,F7,FA,FB,FE,FD,FF
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COLORTABLE HEX 00,02,01,04,08,03,06,0C,09,05,0A,07,0B,0E,0D,0F ; Same, for OpenEmulator, real hardware.
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ALTCOLORTABLE HEX 00,02,01,04,08,03,06,0C,09,05,0A,07,0B,0E,0D,0F ; Same, for OpenEmulator, real hardware.
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HEX 20,22,21,24,28,23,26,2C,29,25,2A,27,2B,2E,2D,2F
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HEX 10,12,11,14,18,13,16,1C,19,15,1A,17,1B,1E,1D,1F
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HEX 40,42,41,44,48,43,46,4C,49,45,4A,47,4B,4E,4D,4F
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HEX 80,82,81,84,88,83,86,8C,89,85,8A,87,8B,8E,8D,8F
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HEX 30,32,31,34,38,33,36,3C,39,35,3A,37,3B,3E,3D,3F
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HEX 60,62,61,64,68,63,66,6C,69,65,6A,67,6B,6E,6D,6F
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HEX C0,C2,C1,C4,C8,C3,C6,CC,C9,C5,CA,C7,CB,CE,CD,CF
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HEX 90,92,91,94,98,93,96,9C,99,95,9A,97,9B,9E,9D,9F
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HEX 50,52,51,54,58,53,56,5C,59,55,5A,57,5B,5E,5D,5F
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HEX A0,A2,A1,A4,A8,A3,A6,AC,A9,A5,AA,A7,AB,AE,AD,AF
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HEX 70,72,71,74,78,73,76,7C,79,75,7A,77,7B,7E,7D,7F
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HEX B0,B2,B1,B4,B8,B3,B6,BC,B9,B5,BA,B7,BB,BE,BD,BF
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HEX E0,E2,E1,E4,E8,E3,E6,EC,E9,E5,EA,E7,EB,EE,ED,EF
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HEX D0,D2,D1,D4,D8,D3,D6,DC,D9,D5,DA,D7,DB,DE,DD,DF
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HEX F0,F2,F1,F4,F8,F3,F6,FC,F9,F5,FA,F7,FB,FE,FD,FF
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FRAMESTABLE HEX 03,07,0B,0F,12,16,1A,1E,21,25,29,2D,30,34,38,3C ; how many frames transferred? HI byte lookup table
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HEX 3F,43,47,4B,4E,52,56,5A,5D,61,65,69,6C,70,74,78
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**************************************************
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* Lores/Text lines
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@ -223,36 +355,6 @@ Lo22 equ $6d0
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Lo23 equ $750
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Lo24 equ $7d0
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; alt text page lines
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Alt01 equ $800
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Alt02 equ $880
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Alt03 equ $900
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Alt04 equ $980
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Alt05 equ $A00
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Alt06 equ $A80
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Alt07 equ $B00
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Alt08 equ $B80
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Alt09 equ $828
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Alt10 equ $8a8
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Alt11 equ $928
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Alt12 equ $9a8
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Alt13 equ $A28
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Alt14 equ $Aa8
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Alt15 equ $B28
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Alt16 equ $Ba8
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Alt17 equ $850
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Alt18 equ $8d0
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Alt19 equ $950
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Alt20 equ $9d0
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* the "plus four" lines
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Alt21 equ $A50
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Alt22 equ $Ad0
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Alt23 equ $B50
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Alt24 equ $Bd0
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LoLineTable da Lo01,Lo02,Lo03,Lo04
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da Lo05,Lo06,Lo07,Lo08
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da Lo09,Lo10,Lo11,Lo12
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@ -260,14 +362,6 @@ LoLineTable da Lo01,Lo02,Lo03,Lo04
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da Lo17,Lo18,Lo19,Lo20
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da Lo21,Lo22,Lo23,Lo24
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; alt text page
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AltLineTable da Alt01,Alt02,Alt03,Alt04
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da Alt05,Alt06,Alt07,Alt08
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da Alt09,Alt10,Alt11,Alt12
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da Alt13,Alt14,Alt15,Alt16
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da Alt17,Alt18,Alt19,Alt20
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da Alt21,Alt22,Alt23,Alt24
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** Here we split the table for an optimization
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** We can directly get our line numbers now
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@ -289,20 +383,7 @@ LoLineTableL db <Lo01,<Lo02,<Lo03
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db <Lo19,<Lo20,<Lo21
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db <Lo22,<Lo23,<Lo24
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; alt text page
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AltLineTableH db >Alt01,>Alt02,>Alt03
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db >Alt04,>Alt05,>Alt06
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db >Alt07,>Alt08,>Alt09
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db >Alt10,>Alt11,>Alt12
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db >Alt13,>Alt14,>Alt15
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db >Alt16,>Alt17,>Alt18
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db >Alt19,>Alt20,>Alt21
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db >Alt22,>Alt23,>Alt24
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AltLineTableL db <Alt01,<Alt02,<Alt03
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db <Alt04,<Alt05,<Alt06
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db <Alt07,<Alt08,<Alt09
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db <Alt10,<Alt11,<Alt12
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db <Alt13,<Alt14,<Alt15
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db <Alt16,<Alt17,<Alt18
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db <Alt19,<Alt20,<Alt21
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db <Alt22,<Alt23,<Alt24
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DATALO DB <BEGINDATA
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DATAHI DB >BEGINDATA
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BEGINDATA EQU *
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