A2osX/A2osX.S.txt

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PR#3
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PREFIX /A2OSX.BOOT
DELETE A2OSX.SYSTEM
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PREFIX /A2OSX.SRC
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NEW
INC 1
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AUTO 8
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.LIST OFF
.OP 65C02
.OR $2000
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.TF /A2OSX.BOOT/A2OSX.SYSTEM,TSYS
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*--------------------------------------
.INB /A2OSX.DEV/INC/MACROS.I
.INB /A2OSX.DEV/INC/A2OSX.I
.INB /A2OSX.DEV/INC/IO.I
.INB /A2OSX.DEV/INC/MONITOR.I
.INB /A2OSX.DEV/INC/PRODOS.I
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*--------------------------------------
TmpPtr1 .EQ $0 main & aux ZP
TmpPtr2 .EQ $2 main & aux ZP
*--------------------------------------
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A2osX.KMLOAD .EQ $2000
A2osX.KMMAXLEN .EQ $4000
A2osX.OpenBuff1 .EQ $6000 1024 Buffer for MLIOPEN01
A2osX.OpenBuff2 .EQ $6400 1024 Buffer for MLIOPEN02
A2osX.ReadBuff .EQ $6800 512 Buffer for MLIREAD01
Boot.Prefix .EQ $6A00 MLI.MAXPATH
KM.Filename .EQ $6A80 MLI.MAXPATH
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*--------------------------------------
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* Kernel Stage 0
*--------------------------------------
.PH $1000
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A2osX.Init0 >LDYAI $2000
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>STYA TmpPtr1
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>LDYAI $1000
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>STYA TmpPtr2
ldx #$10 reloc $2000-$2FFF to $1000-$1FFF
ldy #0
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.1 lda (TmpPtr1),y
sta (TmpPtr2),y
iny
bne .1
inc TmpPtr1+1
inc TmpPtr2+1
dex
bne .1
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jmp A2osX.Init1
*--------------------------------------
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A2osX.Init1 ldx #$FF init 6502 stack to highest
txs
bit RROMBNK1
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jsr HOME
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>LDAXI MSG.INIT0
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jsr PrintCStrAX
>LDAXI MSG.SYSMEM
jsr PrintCStrAX
lda MACHID
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and #MACHID.RAM
cmp #MACHID.RAM.128
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beq .1
>LDAXI MSG.SYSMEM.KO
jsr PrintCStrAX
bra *
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.1 lda #$8C Reset 80 col screen ($0C:HOME)
jsr $C300
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>LDAXI MSG.INIT0
jsr PrintCStrAX
>LDAXI MSG.SYSMEM
jsr PrintCStrAX
>LDAXI MSG.SYSMEM.OK
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jsr PrintCStrAX
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>LDAXI MSG.CPU
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jsr PrintCStrAX
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sed Test 6502 BCD bug
lda #$99
clc
adc #$01
cld
bpl .2 if minus, BUG!, we have 6502
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>LDAXI MSG.CPU.KO
jsr PrintCStrAX
bra *
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.2 >LDAXI MSG.CPU.OK
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jsr PrintCStrAX
*--------------------------------------
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A2osX.Prefix >LDAXI MSG.BOOTPREFIX
jsr PrintCStrAX
jsr MLI
.DA #MLIGETPREFIX
.DA MLIGETPREFIX01
bcs *
ldx Boot.Prefix
stx A2osX.QC.B.Start+4
ldy #1
.1 lda Boot.Prefix,y
sta A2osX.QC.B.Start+4,y
ora #$80
jsr COUT
iny
dex
bne .1
jsr CROUT
*--------------------------------------
A2osX.RamDrv >LDAXI MSG.RAMDRV
jsr PrintCStrAX
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jsr DisableRamDRV
bcc .2
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tax
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bne .1
>LDAXI MSG.RAMDRV.KO0
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jsr PrintCStrAX
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bra A2osX.SetupQC
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.1 >LDAXI MSG.RAMDRV.KO1
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jsr PrintCStrAX
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bra A2osX.SetupQC
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.2 >LDAXI MSG.RAMDRV.OK
jsr PrintCStrAX
*--------------------------------------
A2osX.SetupQC lda RRAMWRAMBNK2
lda RRAMWRAMBNK2
ldx #0
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.1 lda A2osX.QC.B.Start,x
sta $D100,x
lda A2osX.QC.B.Start+$100,x
sta $D200,x
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lda A2osX.QC.B.Start+$200,x
sta $D300,x
inx
bne .1
lda RROMBNK1
*--------------------------------------
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A2osX.EnumKM >LDAXI MSG.KMENUM
jsr PrintCStrAX
jsr EnumKM
*--------------------------------------
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A2osX.MLIQuit >LDAXI MSG.INIT0OK
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jsr PrintCStrAX
>DEBUGOA
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jsr MLI
.DA #MLIQUIT
.DA MLIQUIT01
bra *
*--------------------------------------
DisableRamDRV php
sei
lda DEVPTRS3D2
cmp DEVPTRS0D1
bne .1
lda DEVPTRS3D2+1
cmp DEVPTRS0D1+1
beq .9 S3D2=NODEV, nothing to do
.1 ldx DEVCNT
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.2 lda DEVLST,x LOOKING FOR $BF, $BB, $B7, $B3
and #$F3
cmp #$B3
beq .3
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dex
bpl .2
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plp
lda #1 No device found, exit with error
sec
rts
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.3 cpx DEVCNT
beq .5
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.4 lda DEVLST+1,x
sta DEVLST,x
inx
cpx DEVCNT
bne .4
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.5 ldx DEVCNT
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stz DEVLST,x
dec DEVCNT
lda DEVPTRS0D1
sta DEVPTRS3D2
lda DEVPTRS0D1+1
sta DEVPTRS3D2+1
plp
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jsr MLI
.DA #MLIONLINE
.DA MLIONLINE01
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clc Success!!
rts
.9 plp
lda #0 Not detected
sec
rts
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EnumKM.EPB .EQ $0D
EnumKM.EL .EQ $27
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*--------------------------------------
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EnumKM ldx #0
ldy Boot.Prefix
.1 inx
lda SYS,x
sta Boot.Prefix+1,y
iny
cpx SYS
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bne .1
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sty Boot.Prefix
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jsr MLI
.DA #MLIOPEN
.DA MLIOPEN01
bcs .99
lda MLIOPEN01+5
sta MLIREAD01+1
sta MLICLOSE01+1
.2 jsr MLI
.DA #MLIREAD
.DA MLIREAD01
bcs .98
lda #EnumKM.EPB
sta EnumKM.EC
>LDYAI A2osX.ReadBuff+4
>STYA EnumKM.BPTR
.3 >LDYA EnumKM.BPTR
>STYA TmpPtr1
lda (TmpPtr1)
and #$F0 Empty ?
beq .5 yes, skip
and #$C0 anything out of type 1,2 or 3 ?
bne .5 yes, skip
lda (TmpPtr1)
and #$0F
cmp KM.PREFIX at least enough chars for KM.*?
bcc .5 no, skip
ldy #$10 file type
lda (TmpPtr1),y
cmp #$06 'BIN'?
bne .5 skip
ldy KM.PREFIX
.4 lda (TmpPtr1),y
cmp KM.PREFIX,y
bne .5
dey
bne .4
jsr LoadKM
.5 lda EnumKM.BPTR
clc
adc #EnumKM.EL
sta EnumKM.BPTR
bcc .6
inc EnumKM.BPTR+1
.6 dec EnumKM.EC
bne .3
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bra .2
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.8 jsr MLI
.DA #MLICLOSE
.DA MLICLOSE01
rts
.98 cmp #MLI.ERR.EOF
beq .8
pha
jsr .8
pla
.99 sec
rts
*--------------------------------------
EnumKM.EC .BS 1
EnumKM.BPTR .BS 2
*--------------------------------------
LoadKM ldx Boot.Prefix
.1 lda Boot.Prefix,x
sta KM.Filename,x
dex
bne .1
ldx Boot.Prefix
lda (TmpPtr1)
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and #$0F
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tay
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clc
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adc Boot.Prefix
sta KM.Filename
tax
.2 lda (TmpPtr1),y
sta KM.Filename,x
dex
dey
bne .2
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>LDAXI MSG.KMLOAD
jsr PrintCStrAX
>LDAXI KM.Filename
jsr PrintPStrAX
jsr CROUT
jsr MLI
.DA #MLIOPEN
.DA MLIOPEN02
bcs .99
lda MLIOPEN02+5
sta MLIREAD02+1
sta MLICLOSE02+1
jsr MLI
.DA #MLIREAD
.DA MLIREAD02
bcs .98
jsr .9
jsr A2osX.KMLOAD
jsr CROUT
.98 pha
jsr .9
pla
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sec
rts
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.9 jsr MLI
.DA #MLICLOSE
.DA MLICLOSE02
.99 rts
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*--------------------------------------
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.INB X.PRINTF.S
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*--------------------------------------
MSG.INIT0 >CSTR "A2osX[Stage0]:Init\n"
MSG.SYSMEM >CSTR "Checking System Memory..."
MSG.SYSMEM.OK >CSTR "128k Detected.\n"
MSG.SYSMEM.KO >CSTR "A2osX Requires At Least 128k Memory.\n"
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MSG.CPU >CSTR "Checking CPU..."
MSG.CPU.OK >CSTR "65C02 CPU (or higher) Detected.\n"
MSG.CPU.KO >CSTR "A2osX Requires At Least A 65C02 CPU.\n"
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MSG.RAMDRV >CSTR "Checking ProDOS RamDrive..."
MSG.RAMDRV.OK >CSTR "Successfully Disabled.\n"
MSG.RAMDRV.KO0 >CSTR "Not Detected.\n"
MSG.RAMDRV.KO1 >CSTR "Uninstall Failed !!!\n"
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MSG.BOOTPREFIX >CSTR "Boot Prefix:"
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MSG.KMENUM >CSTR "Looking For Kernel Modules...\n"
MSG.KMLOAD >CSTR "***Loading KM : "
MSG.INIT0OK >CSTR "A2osX[Stage0]:Complete.\n"
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*--------------------------------------
MLIGETPREFIX01 .DA #1
.DA Boot.Prefix
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MLIONLINE01 .DA #2
.DA #0
.DA MLIONLINE01BUF
MLIONLINE01BUF .BS 256
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MLIOPEN01 .DA #3 For DIR listing
.DA Boot.Prefix
.DA A2osX.OpenBuff1
.BS 1
MLIREAD01 .DA #4
.BS 1
.DA A2osX.ReadBuff Load address Dir Blocks
.DA $200 Maxlen of Dir Blocks (512)
.BS 2
MLICLOSE01 .DA #1
.BS 1
MLIOPEN02 .DA #3
.DA KM.Filename
.DA A2osX.OpenBuff2
.BS 1
MLIREAD02 .DA #4
.BS 1
.DA A2osX.KMLOAD Load address for KMs
.DA A2osX.KMMAXLEN Maxlen of KM
.BS 2
MLICLOSE02 .DA #1
.BS 1
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MLIQUIT01 .DA #4
.DA #0
.DA 0
.DA #0
.DA 0
*--------------------------------------
SYS >PSTR "SYS/"
KM.PREFIX >PSTR "KM."
*--------------------------------------
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.EP
*--------------------------------------
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A2osX.QC.B.Start
.INB A2OSX.S.QC
*--------------------------------------
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MAN
SAVE A2OSX.S
ASM