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added cx16.vload() (like the VLOAD basic instruction)
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Irmen de Jong
parent
3e286dd14c
commit
ca868ae19e
@ -202,7 +202,7 @@ romsub $FFAE = UNLSN() clobbers(A) ; command serial
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romsub $FFB1 = LISTEN(ubyte device @ A) clobbers(A) ; command serial bus device to LISTEN
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romsub $FFB4 = TALK(ubyte device @ A) clobbers(A) ; command serial bus device to TALK
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romsub $FFB7 = READST() -> ubyte @ A ; read I/O status word
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romsub $FFBA = SETLFS(ubyte logical @ A, ubyte device @ X, ubyte address @ Y) ; set logical file parameters
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romsub $FFBA = SETLFS(ubyte logical @ A, ubyte device @ X, ubyte secondary @ Y) ; set logical file parameters
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romsub $FFBD = SETNAM(ubyte namelen @ A, str filename @ XY) ; set filename parameters
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romsub $FFC0 = OPEN() clobbers(X,Y) -> ubyte @Pc, ubyte @A ; (via 794 ($31A)) open a logical file
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romsub $FFC3 = CLOSE(ubyte logical @ A) clobbers(A,X,Y) ; (via 796 ($31C)) close a logical file
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@ -211,7 +211,7 @@ romsub $FFC9 = CHKOUT(ubyte logical @ X) clobbers(A,X) ; (via 800 ($320
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romsub $FFCC = CLRCHN() clobbers(A,X) ; (via 802 ($322)) restore default devices
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romsub $FFCF = CHRIN() clobbers(X, Y) -> ubyte @ A ; (via 804 ($324)) input a character (for keyboard, read a whole line from the screen) A=byte read.
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romsub $FFD2 = CHROUT(ubyte char @ A) ; (via 806 ($326)) output a character
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romsub $FFD5 = LOAD(ubyte verify @ A, uword address @ XY) -> ubyte @Pc, ubyte @ A, ubyte @ X, ubyte @ Y ; (via 816 ($330)) load from device
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romsub $FFD5 = LOAD(ubyte verify @ A, uword address @ XY) -> ubyte @Pc, ubyte @ A, uword @ XY ; (via 816 ($330)) load from device
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romsub $FFD8 = SAVE(ubyte zp_startaddr @ A, uword endaddr @ XY) -> ubyte @ Pc, ubyte @ A ; (via 818 ($332)) save to a device
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romsub $FFDB = SETTIM(ubyte low @ A, ubyte middle @ X, ubyte high @ Y) ; set the software clock
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romsub $FFDE = RDTIM() -> ubyte @ A, ubyte @ X, ubyte @ Y ; read the software clock
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@ -35,7 +35,7 @@ romsub $FFAE = UNLSN() clobbers(A) ; command serial
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romsub $FFB1 = LISTEN(ubyte device @ A) clobbers(A) ; command serial bus device to LISTEN
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romsub $FFB4 = TALK(ubyte device @ A) clobbers(A) ; command serial bus device to TALK
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romsub $FFB7 = READST() -> ubyte @ A ; read I/O status word
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romsub $FFBA = SETLFS(ubyte logical @ A, ubyte device @ X, ubyte address @ Y) ; set logical file parameters
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romsub $FFBA = SETLFS(ubyte logical @ A, ubyte device @ X, ubyte secondary @ Y) ; set logical file parameters
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romsub $FFBD = SETNAM(ubyte namelen @ A, str filename @ XY) ; set filename parameters
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romsub $FFC0 = OPEN() clobbers(X,Y) -> ubyte @Pc, ubyte @A ; (via 794 ($31A)) open a logical file
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romsub $FFC3 = CLOSE(ubyte logical @ A) clobbers(A,X,Y) ; (via 796 ($31C)) close a logical file
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@ -44,7 +44,7 @@ romsub $FFC9 = CHKOUT(ubyte logical @ X) clobbers(A,X) ; (via 800 ($320
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romsub $FFCC = CLRCHN() clobbers(A,X) ; (via 802 ($322)) restore default devices
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romsub $FFCF = CHRIN() clobbers(X, Y) -> ubyte @ A ; (via 804 ($324)) input a character (for keyboard, read a whole line from the screen) A=byte read.
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romsub $FFD2 = CHROUT(ubyte char @ A) ; (via 806 ($326)) output a character
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romsub $FFD5 = LOAD(ubyte verify @ A, uword address @ XY) -> ubyte @Pc, ubyte @ A, ubyte @ X, ubyte @ Y ; (via 816 ($330)) load from device
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romsub $FFD5 = LOAD(ubyte verify @ A, uword address @ XY) -> ubyte @Pc, ubyte @ A, uword @ XY ; (via 816 ($330)) load from device
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romsub $FFD8 = SAVE(ubyte zp_startaddr @ A, uword endaddr @ XY) -> ubyte @ Pc, ubyte @ A ; (via 818 ($332)) save to a device
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romsub $FFDB = SETTIM(ubyte low @ A, ubyte middle @ X, ubyte high @ Y) ; set the software clock
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romsub $FFDE = RDTIM() -> ubyte @ A, ubyte @ X, ubyte @ Y ; read the software clock
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@ -419,6 +419,46 @@ asmsub vpoke_xor(ubyte bank @A, uword address @R0, ubyte value @Y) clobbers (A)
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}}
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}
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asmsub vload(str name @R0, ubyte device @Y, ubyte bank @A, uword address @R1) -> ubyte @A {
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; -- like the basic command VLOAD "filename",device,bank,address
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; loads a file into video memory in the given bank:address, returns success in A
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; !! NOTE !! the V38 ROMs contain a bug in the LOAD code that makes the load address not work correctly,
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; it works fine when loading from local filesystem
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%asm {{
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; -- load a file into video ram
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phx
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pha
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tya
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tax
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lda #1
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ldy #0
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jsr c64.SETLFS
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lda cx16.r0
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ldy cx16.r0+1
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jsr prog8_lib.strlen
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tya
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ldx cx16.r0
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ldy cx16.r0+1
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jsr c64.SETNAM
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pla
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clc
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adc #2
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ldx cx16.r1
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ldy cx16.r1+1
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stz P8ZP_SCRATCH_B1
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jsr c64.LOAD
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bcs +
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inc P8ZP_SCRATCH_B1
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+ jsr c64.CLRCHN
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lda #1
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jsr c64.CLOSE
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plx
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lda P8ZP_SCRATCH_B1
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rts
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}}
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}
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sub FB_set_pixels_from_buf(uword buffer, uword count) {
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%asm {{
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; -- This is replacement code for the normal FB_set_pixels subroutine in ROM
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@ -1072,3 +1072,14 @@ sign_extend_AY_byte .proc
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rts
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.pend
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strlen .proc
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; -- returns the number of bytes in the string in AY, in Y.
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sta P8ZP_SCRATCH_W1
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sty P8ZP_SCRATCH_W1+1
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ldy #0
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- lda (P8ZP_SCRATCH_W1),y
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beq +
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iny
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bne -
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+ rts
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.pend
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@ -2,7 +2,7 @@
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TODO
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====
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- add cx16 vload() and vsave()
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- add cx16.vsave() to be able to make screenshots? (there's no kernal routine for this)
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- optimize several inner loops in gfx2
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- hoist all variable declarations up to the subroutine scope *before* even the constant folding takes place (to avoid undefined symbol errors when referring to a variable from another nested scope in the subroutine)
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@ -1,10 +1,23 @@
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%target cx16
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%import textio
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%zeropage basicsafe
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main {
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sub start() {
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txt.print("hello")
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str filename = "titlescreen.bin"
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ubyte success = cx16.vload(filename, 8, 0, $0000)
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if success {
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txt.print("load ok")
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cx16.VERA_DC_HSCALE = 64
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cx16.VERA_DC_VSCALE = 64
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cx16.VERA_L1_CONFIG = %00011111 ; 256c bitmap mode
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cx16.VERA_L1_MAPBASE = 0
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cx16.VERA_L1_TILEBASE = 0
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} else {
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txt.print("load fail")
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}
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}
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}
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