A2osX/A2osX.S.QC.txt

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PR#3
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PREFIX /A2OSX.SRC
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NEW
INC 1
AUTO 6
.LIST OFF
*--------------------------------------
* ****** START OF MLI QUIT CODE ******
* Load Address :$1000-$11FF
* setup $BE00 Global page :
* Copy from $1200 to $BE00
*--------------------------------------
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MLIOPEN00.PATH .EQ $200
MLIOPEN00.BUFF .EQ $0C00 1k Buffer for MLI open
MLIREAD00.ADDR .EQ $2000 for loading kernel.bin before moving to LC1
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*--------------------------------------
A2osX.QC.B.Start
.PH $1000
*--------------------------------------
A2osX.QC.Start .EQ *
A2osX.QC cld
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jmp A2osX.QC.Start1
A2osX.QC.Prefix .BS 32
A2osX.QC.Start1 sei
ldx #$FF
txs
cli
bit RROMBNK1
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>LDYAI A2osX.QC
>STYA POWERUP
jsr SETPWRC
ldx #$17
.1 stz MEMTABL,x Reset ProDOS memory bitmap
dex
bpl .1
lda #$CF protect zero page, stack and page 1
sta MEMTABL
lda #$03
sta MEMTABL+$17 protect ProDOS & A2osX global page
lda #$8C Reset 80 col screen ($0C=FF=HOME)
jsr $C300
>LDAXI MSG.STAGE1
jsr A2osX.QC.PrintAX
ldx #0
.2 lda $1200,x Setup Global Page
sta $BE00,x
inx
bne .2
.3 jsr MLI
.DA #MLISETPREFIX
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.DA MLISETPREFIX00
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bcc .4
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>LDAXI MSG.SETPREFIXKO
jsr A2osX.QC.PrintAX
>LDAXI A2osX.QC.Prefix
jsr A2osX.QC.PrintAX
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>DEBUGOA
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bra .3
.4 >LDAXI MSG.SETPREFIXOK
jsr A2osX.QC.PrintAX
>LDAXI MSG.KLOADING
jsr A2osX.QC.PrintAX
jsr A2osX.QC.KLoad
bcs .9
>LDYAI GO.Reset
>STYA POWERUP
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bit RROMBNK1
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jsr SETPWRC
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>LDAXI MSG.STAGE1OK
jsr A2osX.QC.PrintAX
>DEBUGOA
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jmp (POWERUP)
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.9 >LDAXI MSG.KLOADING.KO
jsr A2osX.QC.PrintAX
bra *
*--------------------------------------
A2osX.QC.KLoad ldx A2osX.QC.Prefix
.1 lda A2osX.QC.Prefix,x
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sta MLIOPEN00.PATH,x
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dex
bne .1
ldx A2osX.QC.Prefix
ldy #0
.2 lda SYSKERNEL+1,y
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sta MLIOPEN00.PATH+1,x
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inx
iny
cpy SYSKERNEL
bne .2
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stx MLIOPEN00.PATH
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>LDAXI MLIOPEN00.PATH
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jsr A2osX.QC.PrintAX
jsr MLI
.DA #MLIOPEN
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.DA MLIOPEN00
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bcs .9
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lda MLIOPEN00+5
sta MLIREAD00+1
sta MLICLOSE00+1
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jsr MLI
.DA #MLIREAD
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.DA MLIREAD00
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bcs .9
jsr MLI
.DA #MLICLOSE
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.DA MLICLOSE00
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bcs .9
php
sei
sta SETALTZP
lda RRAMWRAMBNK1
lda RRAMWRAMBNK1
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>LDYAI MLIREAD00.ADDR+$2F00
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>STYA TmpPtr1
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>LDYAI $D000+$2F00
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>STYA TmpPtr2
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ldx #$30
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ldy #$F9 do not trash NMI,BRK,IRQ Vectors
.3 lda (TmpPtr1),y
sta (TmpPtr2),y
dey
cpy #$FF
bne .3
dec TmpPtr1+1
dec TmpPtr2+1
dex
bne .3
lda RROMBNK1
sta CLRALTZP
plp
clc
.9 rts
*--------------------------------------
A2osX.QC.PrintAX
>STAX TmpPtr1
lda (TmpPtr1)
tax
beq .9
ldy #1
.1 lda (TmpPtr1),y
ora #$80
jsr COUT
iny
dex
bne .1
.9 jsr CROUT
rts
*--------------------------------------
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MLISETPREFIX00 .DA #1
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.DA A2osX.QC.Prefix
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MLIOPEN00 .DA #3
.DA MLIOPEN00.PATH
.DA MLIOPEN00.BUFF
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.BS 1
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MLIREAD00 .DA #4
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.BS 1
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.DA MLIREAD00.ADDR
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.DA $2FFA
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.BS 2
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MLICLOSE00 .DA #1
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.BS 1
*--------------------------------------
SYSKERNEL >PSTRING "SYS/KERNEL"
*--------------------------------------
MSG.STAGE1 >PSTRING "A2osX[Stage1]:Init"
MSG.SETPREFIXOK >PSTRING "Set Prefix OK"
MSG.SETPREFIXKO >PSTRING "Insert Vol:"
MSG.KLOADING >PSTRING "Loading Kernel..."
MSG.KLOADING.KO >PSTRING "Error While Loading Kernel."
MSG.STAGE1OK >PSTRING "A2osX[Stage1]:Complete."
*--------------------------------------
.BS $1200-*
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.EP
*--------------------------------------
MAN
SAVE A2OSX.S.QC
LOAD A2OSX.S
ASM