A follow up from the PETSCII post here – this now uses the tilemap, palette changing, NextZXOS Browser to load PRG/PSC files and can run a slide show.
Credit to the many artists that produce amazing PETSCII work demo’d here including:
PETSCII logo [LMan]
Marq: Whom Are You Going to Call?
Marq: Calaveritas
Dr. TerrorZ: PETSCII Tracing
Dr. TerrorZ: Electric Circus
Rexbeng: Undo
Manu: Rabbit on Acid Trip
Electric: SixShots
Electric: Coltrane
Redcrab: It Ain’t Pretty!
Redcrab: Datagubbe
Redcrab: Ernie
iLKke: Breakfast of Champions
C64 PETSCII by Mermaid.
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'#!v '#!sna "h:\mouse2.sna" -a '!bin "h:\nextscii\test.bin" -a '#!noemu ' nextscii viwer by David Saphier / emook2019 ' http://zxbasic.uk/nextbuild/nextscii/ #include <nextlib.bas> NextReg(8,$fe) ' no contention NextReg(7,2) ' 14mhz NextReg($40,0) ' palette index 0 NextReg($41,$0) ' set black NextReg($4A,0) ' Transparency 0 NextReg($1B,0) ' x1 tilemap clip NextReg($1B,159) ' x2 NextReg($1B,0) ' y1 NextReg($1B,255) ' y2 ' (R/W) 0x6B (107) => Tilemap Control ' bit 7 = 1 to enable the tilemap ' bit 6 = 0 for 40x32, 1 for 80x32 ' bit 5 = 1 to eliminate the attribute entry in the tilemap ' bit 4 = palette select ' bits 3-2 = Reserved set to 0 ' bit 1 = 1 to activate 512 tile mode ' bit 0 = 1 to force tilemap on top of ULA ' 76543210 NextReg($6B,%10000001) ' tilemap on & on top of ULA, 80x32 NextReg($6E,$40) ' (R/W) 0x6E (110) => Tilemap Base Address 0 = $4000 NextReg($6F,$60) ' (R/W) 0x6F (111) => Tile Definitions Base Address NextReg($43,%00110000) dim r,g,b,fc as ubyte dim r9,g9,b9 as uinteger dim result as ubyte dim v as ubyte dim f,x,pcount as uinteger dim tindex,alltext,tcount,peekstringcount,Memory as uinteger dim temp$,ext$,tx$ as string dim xr,xy,vv,xx,yy,k,car,st,subcar,cc,cof,tma,paloff,palcols,prg,col,yr,offsetload,size,prg2,nbrsplits as ubyte dim count,c as ubyte dim splitted$ as string =" " dim z$ as string =" " dim text$ as string =" " dim type$ as string =" " dim fname$ as string =" " paloff=0 : pcount = 0 declare function SplitString(byval s$ as string,byval split$ as string,byval index as ubyte) as string declare function PeekString(Memory as uinteger) as string LoadSD("UC.spr",$6000,8192,0) ' our tile map bitmap 4bit 512 blocks Zx7Unpack(@infoscreen,$b400) Reload: tma=1 border 0 : paper 0 : ink 0: cls DoScreen() SetPalette(1) pause 0 nbrsplits=1 LoadSD("list.txt",$b000,1024,0) if peek($b000)<>0 ' rolling text$=PeekString($b000) do DO splitted$=SplitString(text$,chr($0a),nbrsplits) type$=SplitString(splitted$,".",2) NextReg($6B,%00000000) ' tilemap off type2$=type$ nbrsplits=nbrsplits+1 'BBREAK if splitted$(0)=chr $0a splitted$=splitted$ (1 to ) endif if type2$( to 2)="PRG" fname$=splitted$ LoadSD(fname$( to ),$b400,1,$19) LoadSD(fname$( to ),$b401,1,$1E) LoadSD(fname$( to ),$b402,2002,98) elseif type2$( to 2)="PSC" fname$=splitted$ LoadSD(fname$( to ),$b400,2002,0) border 1 endif CLS : border 0 NextReg($6B,%00000000) ' tilemap off DoScreen() SetPalette(palette) NextReg($6B,%10000001) ' tilemap on do key$=inkey$ if key$="p" palette=palette+1 Band 7 SetPalette(palette) updatemap(0,0,48+palette,2) elseif key$="o" palette=palette-1 BAND 7 SetPalette(palette) updatemap(0,0,48+palette,2) elseif key$="e" NextReg($6B,%00000000) goto finish elseif key$="b" NextReg($6B,%00000000) exittobrowser=1 exit DO elseif key$<>"" exitloop=1 endif pause 5 loop until exitloop=1 exitloop=0 if exittobrowser=1 : exit do : endif loop until splitted$(to 2)="END" nbrsplits=1 if exittobrowser=1 : exit do : endif loop endif do pause 1 key$=inkey$ if key$="p" palette=palette+1 Band 7 SetPalette(palette) updatemap(0,0,48+palette,2) elseif key$="o" palette=palette-1 BAND 7 SetPalette(palette) updatemap(0,0,48+palette,2) elseif key$="e" NextReg($6B,%00000000) Goto finish elseif key$<>"" cls Browser("Choose a .PRG or .PSC from PetMate","PRG") s$="" for x=0 to 13 c=peek (@filebuffer+x) : if c=255 : size=x-1 : x = 13 :ELSE s$=s$+chr c : endif : next if peek(@filebuffer+size)=code "G" LoadSD(s$,$b400,1,$19) LoadSD(s$,$b401,1,$1E) LoadSD(s$,$b402,2002,98) else LoadSD(s$,$b400,2002,0) endif CLS : border 0 DoScreen() SetPalette(palette) NextReg($6B,%10000001) ' tilemap on elseif key$="m" ' flips tilemap not used if tma=0 NextReg($6F,$60) tma =1 else NextReg($6F,$90) tma=0 endif endif while inkey$<>"" pause 1 wend loop SUB SetPalette(palette as ubyte) pcount=cast(uinteger,palette)*64 bordercol=peek($b400) papercol=peek($b401) borderindex=@Palette+2+(cast(uinteger,bordercol)*4) paperindex=@Palette+2+(cast(uinteger,papercol)*4) NextRegA($40,0) NextRegA($44,peek(paperindex)) NextRegA($44,0) NextRegA($44,0) NextRegA($44,0) NextRegA($40,paloff+4) for paltot=0 to 15 NextRegA($44,peek(paperindex)) NextRegA($44,0) prg=peek(@Palette+cast(uinteger,palcols+2)+pcount) prg2=peek(@Palette+cast(uinteger,palcols+3)+pcount) NextRegA($44,prg) NextRegA($44,prg2) pcount=pcount+4 paloff=paloff+16 NextRegA($40,paloff) next end sub sub DoScreen() asm ld hl,$4000 ld de,$4001 ld (hl),32 ld bc,3999 ldir end asm xr=0 : yr = 0 : car=0 for f=0 to 2000 car=peek($b402+cast(uinteger,f )) col=peek($b402+cast(uinteger,f )+1000) updatemap(xr,yr,car,col) xr=xr+1 if xr > 39 'or k=13 yr=yr+1 : xr=0 endif if yr=25 then f=2000 next end sub sub fastcall updatemap(xx as ubyte, yy as ubyte, vv as ubyte, col as ubyte) asm ;BREAK pop bc ; return address ld hl,$4000+160*2 : add a,a : ADD_HL_A ; add x ; hl = $4000+x pop de : ld a,e : ld e,80 : MUL_DE add hl,de : pop af ;cp 95 ;jr c,skipme ;BREAK skipme: ld (hl),a : inc hl : pop af SWAPNIB : and %11110000 ld (hl),a push bc ;BREAK end asm end sub sub Browser(byval temp$ as string,byval ext$ as string) NextReg($6B,%00000000) ' tilemap on & on top of ULA, 80x32 'for p=0 to 2 : poke @extname+p, code(ext$(p)) : next for p=0 to len(temp$)-1 : poke @testtext+cast(uinteger,p), code(temp$(p)) : next poke @testtext+cast(uinteger,p),255 asm ; bits of code by Garry Lancaster from .browser sources ;DW $01DD IDEBROWSER equ $01ba LAYER equ $9c IDEBASIC equ $1c0 ; Next Registers nextregselect equ $243b nextregaccess equ $253b nxrturbo equ $07 turbomax equ 2 nxrmmu6 equ $56 nxrmmu7 equ $57 tstack equ $bf00 ld (stackstore),sp ld sp,tstack browser2: BREAK ld a,$7f ; all capabilities ld hl,ftbuff ; hl = filetypes ld de,testtext ; de info at bottom of screen +$FF exx pressesq: ld c,7 ; RAM 7 required for most IDEDOS calls ld de,$01ba ; IDEBROWSER ;ld a,$7f ; all capabilities rst $8 defb $94 ; MP3DOS jp nc,FILERROR jp z,FILEOK jp nz,browser2 FILEOK: ;pop de ; get off stack ld a,4 out (254),a ld de,filebuffer jp copyRAM7tode ret FILERROR: ret copyRAM7tode: push hl ; save source address ld bc,nextregselect ld a,nxrmmu6 out (c),a inc b in l,(c) ; L=current MMU6 binding ld a,7*2+0 out (c),a ; rebind to RAM 7 low dec b ld a,nxrmmu7 out (c),a inc b in h,(c) ; H=current MMU7 binding ld a,7*2+1 out (c),a ; rebind to RAM 7 high ex (sp),hl ; save MMU6/7 bindings, refetch source ld bc,$ffff ; string len, -1 to exclude terminator cr7tomainloop: ld a,(hl) ; copy a byte inc hl ld (de),a inc de inc bc ; increment string length inc a jr nz,cr7tomainloop ; back unless $ff-terminator copied pop hl ld a,l defb $ed,$92,nxrmmu6 ; restore MMU6 binding ld a,h defb $ed,$92,nxrmmu7 ; restore MMU7 binding ld hl,filebuffer add hl,bc ld a,$ff ld (hl),a jp endout ftbuff: defb 4 end asm extname: asm defb "PRG:" defb 4 defb "PSC:" defb $ff ; all files end asm testtext: asm testtext: Defs 64,32 DB 255 stackstore: dw 0 endout: rom3page0: di ld bc,32765 ;I/O address of horizontal ROM/RAM switch ld a,(23388) ;get current switch state set 4,a ;move left to right (ROM 2 to ROM 3) and $F8 ;also want RAM page 0 ;or 0 ;ld a,$10 ld (23388),a ;update the system variable (very important) out (c),a ;make the switch rst $20 ld sp,(stackstore) ei end asm end sub filebuffer: asm filebuffer: db "filename.ext" db 255 end asm function PeekString(byval Memory as uinteger) as string dim tempcar$ as string peekstringcount=0 :tempcar$="" while peek(ubyte,Memory+peekstringcount)<>0 tcar=peek(ubyte,Memory+peekstringcount) 'tcar=tcar BAND %01111111 if tcar<>$0a or tcar<>$0d0 tempcar$=tempcar$+chr$(tcar) endif peekstringcount=peekstringcount+1 wend return tempcar$ end function Function SplitString(s$ as string,split$ as string,byval index as ubyte) as string 'dim outstring$ as string totlen=len(s$) : spos = 0 : tcount=0 : tindex = 0 : outstring$="" s$=s$+split$ for alltext=0 to totlen+1 curcar$=s$(alltext) if curcar$=split$ if tindex+1=index if spos>0 tcount=spos+1 endif do outstring$=outstring$+s$(tcount) tcount=tcount+1 : loop until s$(tcount)=split$ alltext=totlen else spos=alltext tindex=tindex+1 endif endif next alltext return outstring$ end function Palette: ASM ; my original db 0,0,0,0 ; 0 black db 0,0,255,1 ; 1 white db 0,0,137,0 ; 2 dark red db 0,0,150,0 ; 3 light blue db 0,0,138,0 ; 4 magenta db 0,0,117,0 ; 5 dark green db 0,0,74,0 ; 6 dark purple db 0,0,217,0 ; 7 yello db 0,0,141,0 ; 8 light brown db 0,0,104,0 ; 9 dark brown db 0,0,210,0 ; 10 beige / pink db 0,0,73,0 ; 11 dark grey db 0,0,146,0 ; 12 medium grey db 0,0,186,0 ; 13 light green db 0,0,143,1 ; 14 light purple db 0,0,182,1 ; 15 light grey ; VICE PALETTE DB 0,0,0,0 DB 0,0,255,1 DB 0,0,160,1 DB 0,0,63,0 DB 0,0,163,1 DB 0,0,24,0 DB 0,0,34,1 DB 0,0,220,0 DB 0,0,100,0 DB 0,0,168,0 DB 0,0,233,0 DB 0,0,73,0 DB 0,0,109,1 DB 0,0,93,0 DB 0,0,75,1 DB 0,0,182,1 ; Community colors DB 0,0,0,0 DB 0,0,255,1 DB 0,0,164,1 DB 0,0,123,0 DB 0,0,166,1 DB 0,0,89,0 DB 0,0,39,0 DB 0,0,253,0 DB 0,0,100,0 DB 0,0,168,0 DB 0,0,237,1 DB 0,0,73,0 DB 0,0,146,0 DB 0,0,190,0 DB 0,0,111,1 DB 0,0,182,1 ; colordore DB 0,0,0,0 DB 0,0,255,1 DB 0,0,132,1 DB 0,0,123,0 DB 0,0,134,0 DB 0,0,85,0 DB 0,0,38,0 DB 0,0,253,1 DB 0,0,68,0 DB 0,0,136,1 DB 0,0,205,1 DB 0,0,73,0 DB 0,0,109,1 DB 0,0,190,0 DB 0,0,111,1 DB 0,0,182,1 ; rgb incbin ".\data\rgb.bin" ; c64 hq incbin ".\data\c64hq.bin" ; pepto incbin ".\data\pepto.bin" ; pepto incbin ".\data\godot.bin" end asm infoscreen: asm incbin ".\data\info.psc.zx7" end asm finish: asm rst 56 end asm |