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A2osX/SCMASM.30/SCI.S.LOADSAVE.txt

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NEW
AUTO 3,1
*--------------------------------------
DASH
LDA GET.SET.PARMS+4 GET FILE TYPE
CMP #$06 BINARY?
BEQ .3 ...YES, BRUN
CMP #$04 TEXT?
BNE .1 ...NO, TRY SYS
JMP EXEC ...YES, EXEC
*--------------------------------
.1 CMP #$FF SYS FILE?
BEQ .2 ...YES, BRUN IT
LDA #$0D "FILE TYPE MISMATCH"
SEC
RTS
*---RUN SYS FILE-----------------
.2 JSR CLOSE.ALL.FILES
JSR CLOSE.EXEC.FILE
LDA #0
STA VAL.A
LDX #6 RELEASE $8000-$B7FF
.4 STA BITMAP+16,X
DEX
BPL .4
LDA #$01 RELEASE $B800-$BEFF
STA BITMAP+23 B800.BFFF
LDA /$2000 A$2000
STA VAL.A+1
LDA #$FF T=SYS
STA VAL.T
LDA #$80 SIGNAL FOUND T,A, AND PATHNAME
STA FBITS+1
LDA #$05
STA FBITS
.3 JMP BRUN
*--------------------------------
WARM.DOS
JSR CLOSE.ALL.FILES
JSR CROUT
JMP SC.SOFT
*--------------------------------
* LOAD A SOURCE PROGRAM
*--------------------------------
LOAD
JSR ALLOCATE.UPPER.BUFFER
BCS .5
LDA #$01 READ
LDX #$FA FILE TYPE
JSR OPEN.A.FILE
BCS .5 ...ERROR
*---GET LENGTH OF FILE-----------
LDA SC.INFLAG
ASL
BPL .1 ...NOT .INBx
AND #$7F
STA MISC.PARMS+3
LDA #0
STA MISC.PARMS+2
BEQ .2 ...ALWAYS
.1 JSR MLI.D1 GET LENGTH OF FILE
BCS .5 ...ERROR
*---FIGURE LOAD ADDRESS----------
.2 SEC
LDA SC.HIMEM
SBC MISC.PARMS+2
STA READ.WRITE.PARMS+2
STA VAL.A
TAX
LDA SC.HIMEM+1
SBC MISC.PARMS+3
STA READ.WRITE.PARMS+3
STA VAL.A+1
TAY
*---CHECK FOR ROOM IN RAM--------
BMI .6 ADDRESS>$7FFF MEANS NO ROOM
TXA
CMP SC.LOMEM
TYA
SBC SC.LOMEM+1
BCC .6 ...BELOW LOMEM
*---READ FILE--------------------
LDA MISC.PARMS+2
STA READ.WRITE.PARMS+4
LDA MISC.PARMS+3
STA READ.WRITE.PARMS+5
JSR MLI.CA READ THE FILE
BCS .5
*---CLOSE UNLESS .INBx-----------
BIT SC.INFLAG
BVS .4 ...IT IS .INBx
.3 JSR MLI.CC CLOSE THE FILE
BCS .5
*--------------------------------
.4 LDX VAL.A+1
LDY VAL.A
STX SC.PP+1
STY SC.PP
.5 RTS
.6 LDA #$0E "PROGRAM TOO LARGE"
SEC
RTS
*--------------------------------
* SAVE SOURCE PROGRAM ON DISK
*--------------------------------
SAVE
BCC .1 ...FILE ALREADY HERE
LDA #$FA FILE TYPE "INT"
STA VAL.T
STA GET.SET.PARMS+4
LDA #$C3
STA GET.SET.PARMS+3
LDA SC.PP START OF PROGRAM
STA CREATE.PARMS+5
STA GET.SET.PARMS+5
LDA SC.PP+1
STA CREATE.PARMS+6
STA GET.SET.PARMS+6
JSR MAKE.A.FILE CREATE A NEW FILE
BCS .2 ...ERROR
.1 JSR ALLOCATE.UPPER.BUFFER
BCS .2
LDA #$02
LDX #$FA
JSR OPEN.A.FILE
BCS .2 ...ERROR
*---GET LENGTH-------------------
SEC GET LENGTH
LDA SC.HIMEM
SBC SC.PP
TAX
STA MISC.PARMS+2
LDA SC.HIMEM+1
SBC SC.PP+1
TAY
STA MISC.PARMS+3
LDA #0
STA MISC.PARMS+4
*---WRITE THE FILE---------------
LDA SC.PP
STA READ.WRITE.PARMS+2
LDA SC.PP+1
STA READ.WRITE.PARMS+3
STX READ.WRITE.PARMS+4
STY READ.WRITE.PARMS+5
JSR MLI.CB WRITE DATA ON FILE
BCS .2 ...ERROR
JSR MLI.D0 SET EOF (TRUNCATE OLD LONGER FILE)
BCS .2 ...ERROR
JSR MLI.CC CLOSE THE FILE
BCS .2 ...ERROR
*---UPDATE FILE INFO-------------
LDA SC.PP+1
LDX SC.PP
CMP GET.SET.PARMS+6
BNE .3
CPX GET.SET.PARMS+5
CLC
BNE .3
.2 RTS
.3 STX GET.SET.PARMS+5
STA GET.SET.PARMS+6
LDA #0
STA GET.SET.PARMS+10
STA GET.SET.PARMS+11
STA GET.SET.PARMS+12
STA GET.SET.PARMS+13
JMP SET.FILE.INFO
*--------------------------------
CREATE
LDX #0
LDY #0 AuxType = 0000 unless specified
LDA FBITS+1
BPL .1 ...no A-value specified
LDX VAL.A use A-value for AuxType
LDY VAL.A+1
.1 STX CREATE.PARMS+5
STY CREATE.PARMS+6
LDA FBITS
AND #$04
BNE MAKE.A.FILE
LDA #$0F
STA VAL.T
MAKE.A.FILE
LDA VAL.T
STA CREATE.PARMS+4
LDX #$C3
LDY #$01 SEEDLING
CMP #$0F
BNE .1
LDY #$0D DIRECTORY
.1 STX CREATE.PARMS+3
STY CREATE.PARMS+7
JMP MLI.C0 CREATE
*--------------------------------
RENAME LDA FBITS
AND #$02 PATH 2?
BEQ .1 ...NO, ERROR
JMP MLI.C2 RENAME
.1 JMP ERR.SYNTAX
*--------------------------------
LOCK JSR GET.FILE.INFO
BCS RTS3
LDA GET.SET.PARMS+3
AND #$3C
ORA #$01
BNE LKUNLK ...ALWAYS
UNLOCK JSR GET.FILE.INFO
BCS RTS3
LDA #$C3
ORA GET.SET.PARMS+3
LKUNLK STA GET.SET.PARMS+3
JMP SET.FILE.INFO
*--------------------------------
PREFIX
LDX #0
LDA FBITS+1
AND #$04
BNE .1 ...SPECIFIED S/D
LDA FBITS SEE IF SPECIFIED PATHNAME
LSR
BCC .3 ...NO, SO PRINT CURRENT PREFIX
.1 JMP MLI.C6 SET PREFIX
*---PRINT CURRENT PREFIX---------
.2 LDA PATHNAME.ONE.BUFFER+1,X
ORA #$80
JSR COUT
INX
.3 CPX PATHNAME.ONE.BUFFER
BCC .2
JSR CROUT
CLC
RTS3 RTS
*--------------------------------
NOPREFIX
LDA #0
STA PATHNAME.ONE.BUFFER
JMP MLI.C6 SET PREFIX
*--------------------------------
BSAVE
BCC .2 ...EXISTING FILE
LDA FBITS+1
AND #$B0 A-EL
CMP #$90 Require A and either E or L
BCC .3 ...Neither E nor L
LDA VAL.A
STA CREATE.PARMS+5
STA GET.SET.PARMS+5
LDA VAL.A+1
STA CREATE.PARMS+6
STA GET.SET.PARMS+6
*---T=BIN unless specified-------
LDA FBITS
AND #$04
BNE .1 ...TYPE SPECIFIED
LDA #$06 ...NO TYPE, ASSUME BINARY
STA VAL.T
.1 LDA VAL.T
STA GET.SET.PARMS+4
*--------------------------------
JSR MAKE.A.FILE
BCS .4
JSR GET.FILE.INFO
BCS .4
.2 LDA #$02
BNE B.COMMON ...ALWAYS
.3 LDA #$06 "PATH NOT FOUND"
SEC
.4 RTS
*--------------------------------
BRUN
JSR BLOAD
BCS .1
JSR .2
CLC
.1 RTS
.2 JMP (READ.WRITE.PARMS+2)
*--------------------------------
BLOAD
LDA #$01
B.COMMON
PHA
JSR ALLOCATE.UPPER.BUFFER
PLA
BCS .3
LDX #$06
JSR OPEN.A.FILE
BCS .3
LDX VAL.A
LDY VAL.A+1
LDA FBITS+1
BMI .1 ...ADDRESS SPECIFIED
LDX GET.SET.PARMS+5
LDY GET.SET.PARMS+6
LDA FBITS DON'T ALLOW DEFAULT ADDRESS
AND #$04 ON NON-BINARY FILES
BEQ .0 ...T not specified, so it is BIN
LDA VAL.T T specified, better be BIN or SYS
CMP #$06 is it BIN?
BEQ .0 ...yes, use AuxType value
CMP #$FF is it SYS?
BNE .4 ...no, error
LDX #$2000 ...type SYS, assume A$2000
LDY /$2000
.0 LDA FBITS+1
.1 STX READ.WRITE.PARMS+2
STY READ.WRITE.PARMS+3
LDX VAL.L
LDY VAL.L+1
AND #$30
BEQ .5
EOR #$30
BEQ .4
AND #$10
BEQ .7
LDA VAL.E
SEC
SBC VAL.A
TAX
LDA VAL.E+1
SBC VAL.A+1
TAY
INX
BNE .2
INY
.2 BCS .7
LDA #$02 "RANGE ERROR"
SEC
.3 RTS
*--------------------------------
.4 LDA #$0B "INVALID PARAMETER"
SEC
RTS
*--------------------------------
.5 JSR MLI.D1 GET EOF
BCS .6
LDX MISC.PARMS+2
LDY MISC.PARMS+3
LDA MISC.PARMS+4
BEQ .7
LDA #$0E "PROGRAM TOO LARGE"
.6 SEC
RTS
*--------------------------------
.7 STX READ.WRITE.PARMS+4
STY READ.WRITE.PARMS+5
LDA FBITS+1
AND #$40
BEQ .10
LDX #$02
.8 LDA VAL.B,X
STA MISC.PARMS+2,X
DEX
BPL .8
.9 JSR MLI.CE SET MARK
LDX COMMAND.NUMBER
BCC .10
CMP #$02
BNE .6
CPX #CN.BSAVE
BNE .6
JSR MLI.D0 SET EOF
BCC .9
RTS
*--------------------------------
.10 LDX COMMAND.NUMBER
CPX #CN.BSAVE
BNE .12 ...NOT BSAVE
JSR MLI.CB ...BSAVE
BCS .13 ...ERROR
.11 JMP MLI.CC
.12 JSR MLI.CA READ
BCC .11 ...GOOD, CLOSE
.13 RTS
*--------------------------------------
MAN
SAVE usr/src/scmasm.30/sci.s.loadsave
LOAD usr/src/scmasm.30/scmasm.s
ASM
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