mirror of
https://github.com/badvision/lawless-legends.git
synced 2024-11-15 04:08:04 +00:00
Prepare for boot..
This commit is contained in:
David Schmenk
parent
689e0542ce
commit
f0b629510e
@ -1,6 +1,5 @@
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const iobuffer = $0800
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const databuff = $0C00
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const autorun = $01FF
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byte version[] = "PLASMA VM VERSION 0.9"
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byte errorstr[] = "ERROR: $"
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byte okstr[] = "OK"
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@ -11,6 +10,39 @@ word cmdptr
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;
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; Utility functions
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;
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asm equates
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;*
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;* BANK SWITCHED MEM
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;*
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LCRDEN = $C080
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LCWTEN = $C081
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ROMEN = $C082
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LCRWEN = $C083
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LCBNK2 = $00
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LCBNK1 = $08
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;*
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;* ZERO PAGE USEAGE
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;*
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ESTKSZ = $20
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ESTK = $C0
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ESTKL = ESTK
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ESTKH = ESTK+ESTKSZ/2
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VMZP = ESTK+ESTKSZ
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IFP = VMZP
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IFPL = IFP
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IFPH = IFP+1
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IP = IFP+2
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IPL = IP
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IPH = IP+1
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IPY = IP+2
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SRC = $06
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SRCL = SRC
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SRCH = SRC+1
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DST = SRC+2
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DSTL = DST
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DSTH = DST+1
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ESP = DST+2
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end
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; CALL PRODOS
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; SYSCALL(CMD, PARAMS)
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;
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@ -26,7 +58,6 @@ asm prodos
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JSR $BF00
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CMD: !BYTE 00
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PARAMS: !WORD 0000
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BIT LCBNK2
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LDX ESP
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STA ESTKL,X
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LDY #$00
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@ -40,7 +71,6 @@ asm exec
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LDX #$FE
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TXS
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LDX ESTKSZ/2
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BIT ROMEN
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JMP $2000
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end
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;
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@ -333,7 +363,7 @@ def catalog(optpath)
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word entry, filecnt
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if ^optpath
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memcpy(optpath, @path, ^optpath + 1)
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memcpy(@path, optpath, ^optpath + 1)
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else
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getpfx(@path)
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prstr(@path)
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@ -384,7 +414,7 @@ def catalog(optpath)
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end
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def stripchars(strptr)
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while ^strptr and ^(strptr + 1) <> ' '
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memcpy(strptr + 2, strptr + 1, ^strptr)
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memcpy(strptr + 1, strptr + 2, ^strptr)
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^strptr = ^strptr - 1
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loop
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return ^strptr
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@ -394,7 +424,7 @@ def stripspaces(strptr)
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^strptr = ^strptr - 1
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loop
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while ^strptr and ^(strptr + 1) <= ' '
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memcpy(strptr + 2, strptr + 1, ^strptr)
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memcpy(strptr + 1, strptr + 2, ^strptr)
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^strptr = ^strptr - 1
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loop
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end
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@ -415,7 +445,7 @@ def parsecmd(strptr)
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stripspaces(strptr)
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if ^strptr
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cmd = ^(strptr + 1)
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memcpy(strptr + 2, strptr + 1, ^strptr)
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memcpy(strptr + 1, strptr + 2, ^strptr)
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^strptr = ^strptr - 1
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fin
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stripspaces(strptr)
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@ -439,18 +469,18 @@ def execsys(sysfile)
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word len
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if ^sysfile
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memcpy(sysfile, $280, ^sysfile + 1)
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memcpy($280, sysfile, ^sysfile + 1)
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striptrail(sysfile)
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refnum = open(sysfile, iobuffer)
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if refnum
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len = read(refnum, $2000, $FFFF)
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resetmemfiles()
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if len
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memcpy($280, sysfile, ^$280 + 1)
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memcpy(sysfile, $280, ^$280 + 1)
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if stripchars(sysfile) and ^$2000 == $4C and *$2003 == $EEEE
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stripspaces(sysfile)
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if ^$2006 <= ^sysfile
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memcpy(sysfile, $2006, ^sysfile + 1)
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memcpy($2006, sysfile, ^sysfile + 1)
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fin
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fin
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striptrail($280)
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@ -461,7 +491,6 @@ def execsys(sysfile)
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end
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resetmemfiles()
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execsys(autorun)
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prstr(@version)
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crout();
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while 1
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@ -1,9 +1,7 @@
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const iobuffer = $0800
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const databuff = $0C00
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const memmap = $BF58
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const autorun = $01FF
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byte cmdline[] = "CMD"
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word cmd = @cmdline
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const sysfile = $0280
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byte syshalt[] = "SYSTEM HALTED..."
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byte perr
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@ -35,6 +33,10 @@ end
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; CALL LOADED SYSTEM PROGRAM
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;
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asm exec
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LDA #$00
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STA IFPL
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LDA #$BF
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STA IFPH
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LDX #$FE
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TXS
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LDX ESTKSZ/2
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@ -207,16 +209,14 @@ def resetmemfiles
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^memmap.0 = $CF
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^memmap.23 = $01
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end
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def execsys(sysfile)
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def execsys
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byte refnum
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if ^sysfile
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memcpy($280, sysfile, ^sysfile + 1)
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refnum = open(sysfile, iobuffer)
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if refnum
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if read(refnum, $2000, $FFFF)
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resetmemfiles()
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memcpy($280, sysfile, ^$280 + 1)
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exec()
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fin
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fin
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@ -224,10 +224,7 @@ def execsys(sysfile)
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end
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resetmemfiles()
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if ^autorun
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cmd = autorun
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fin
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execsys(cmd)
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execsys
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prstr(@syshalt)
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cin()
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reboot()
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@ -3,6 +3,7 @@ AFLAGS = -o $@
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LFLAGS = -C default.cfg
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PLVM = plvm
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PLVM02 = PLVM02.SYS
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CMD = CMD.SYS
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PLASM = plasm
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INCS = tokens.h symbols.h lex.h parse.h codegen.h
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OBJS = plasm.c parse.o lex.o codegen.o
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@ -21,7 +22,7 @@ TXTTYPE = .TXT
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#SYSTYPE = \#ff0000
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#TXTTYPE = \#040000
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all: $(PLASM) $(PLVM) $(PLVM02) TESTLIB
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all: $(PLASM) $(PLVM) $(PLVM02) $(CMD) TESTLIB
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clean:
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-rm *.o *~ *.a *.SYM *.SYS *.BIN TESTLIB $(PLASM) $(PLVM)
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@ -38,6 +39,10 @@ cmdexec.a: cmdexec.pla $(PLASM)
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$(PLVM02): plvm02.s cmdexec.a
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acme -o $(PLVM02) -l PLVM02.SYM plvm02.s
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$(CMD): cmd.pla $(PLVM) $(PLASM)
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./$(PLASM) -A < cmd.pla > cmd.a
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acme --setpc 8192 -o $(CMD) cmd.a
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TESTLIB: testlib.pla $(PLVM) $(PLASM)
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./$(PLASM) -AM < testlib.pla > testlib.a
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acme --setpc 4096 -o TESTLIB testlib.a
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@ -76,7 +76,7 @@ ESP = DST+2
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;*
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;***********************************************
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* = $2000
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LDX #$FE
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LDX #$FF
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TXS
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;*
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;* INSTALL PAGE 3 VECTORS
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@ -132,7 +132,7 @@ ESP = DST+2
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BCC +
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JMP NOAUTO
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+ LDX READPARMS+6
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STX $01FF
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STX $0280
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NOAUTO JSR PRODOS
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!BYTE $CC
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!WORD CLOSEPARMS
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@ -144,9 +144,7 @@ NOAUTO JSR PRODOS
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STA $1000,Y
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INY
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BNE -
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LDA #$7F
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ADC #$01 ; SET V FLAG
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JMP $1007 ; CALL CMD
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JMP CMDEXEC ; CALL CMD
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AUTORUN !BYTE 7
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!TEXT "AUTORUN"
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OPENPARMS !BYTE 3
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@ -159,7 +157,7 @@ NLPARMS !BYTE 3
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!BYTE $0D
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READPARMS !BYTE 4
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!BYTE 0
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!WORD $0200
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!WORD $0281
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!WORD $0080
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!WORD 0
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CLOSEPARMS !BYTE 1
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@ -201,21 +199,24 @@ OPXTBL !WORD ZEROX,ADDX,SUBX,MULX,DIVX,MODX,INCRX,DECRX ; 00 02 04 06 08 0
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!WORD LBX,LWX,LLBX,LLWX,LABX,LAWX,DLBX,DLWX ; 60 62 64 66 68 6A 6C 6E
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!WORD SBX,SWX,SLBX,SLWX,SABX,SAWX,DABX,DAWX ; 70 72 74 76 78 7A 7C 7E
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;*
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;* COMMAND PROCESSING
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;* 'BYE' COMMAND PROCESSING
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;*
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!PSEUDOPC $1000 {
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;*
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;* CLEAR COMMAND LINE LENGTH BYTE IF CALLED FROM 'BYE'
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;*
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LDY #$00
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LDY DEFCMD
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STY $0280 ; SET DEFAULT COMMAND WHEN CALLED FROM 'BYE'
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- LDA DEFCMD,Y
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STA $0280,Y
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DEY
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BNE -
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LDX #$FE ; LEAVE ROOM FOR COMMAND LINE LENGTH BYTE
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TXS
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BVS +
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STY $01FF ; CLEAR AUTORUN COMMAND WHEN CALLED FROM 'BYE'
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;*
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;* MOVE REST OF CMD FROM LANGUAGE CARD
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;*
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+ STY SRCL
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CMDEXEC STY SRCL
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STY DSTL
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LDA #$D2
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STA SRCH
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@ -246,6 +247,8 @@ OPXTBL !WORD ZEROX,ADDX,SUBX,MULX,DIVX,MODX,INCRX,DECRX ; 00 02 04 06 08 0
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JSR $FC58 ; HOME
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JMP START
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DISABLE80 !BYTE 21, 13, '1', 26, 13
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DEFCMD !BYTE 3
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!TEXT "CMD"
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;*
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;* JUMP TO INTERPRETER
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;*
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