A2osX/A2osX.S.QC.txt

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PR#3
PREFIX /A2OSX.BUILD
NEW
INC 1
AUTO 8
.LIST OFF
*--------------------------------------
* ****** START OF MLI QUIT CODE ******
* Load Address :$1000-$12FF
*--------------------------------------
.PH $1000
*--------------------------------------
* Kernel Stage 1
*--------------------------------------
A2osX.QC.Start .EQ *
A2osX.QC cld
jmp A2osX.QC.Start1
A2osX.QC.Prefix .BS 64
A2osX.QC.Start1 sei
ldx #$FF
txs
cli
bit RROMBNK1
>LDYAI A2osX.QC
>STYA POWERUP
jsr SETPWRC
lda #$01
sta MEMTABL+$17 protect ProDOS MLI Page
ldx #$16
.1 stz MEMTABL,x Reset ProDOS memory bitmap
dex
bne .1
lda #$CF protect zero page, stack and page 1
sta MEMTABL
lda #$8C Reset 80 col screen ($0C=FF=HOME)
jsr $C300
>LDAXI MSG.INIT1
jsr A2osX.QC.PrintAX
.3 jsr MLI
.DA #MLISETPREFIX
.DA MLISETPREFIX00
bcc .4
>LDAXI MSG.SETPREFIXKO
jsr A2osX.QC.PrintAX
>LDAXI A2osX.QC.Prefix
jsr A2osX.QC.PrintAX
>DEBUG
bra .3
.4 >LDAXI MSG.SETPREFIXOK
jsr A2osX.QC.PrintAX
jsr A2osX.QC.KLoad
bcs *
* >LDYAI GO.Reset
* >STYA POWERUP
* bit RROMBNK1
* jsr SETPWRC
.8 >LDAXI MSG.INIT1OK
jsr A2osX.QC.PrintAX
>DEBUGOA
jmp $2000
*--------------------------------------
A2osX.QC.KLoad >LDAXI MSG.KLOAD
jsr A2osX.QC.PrintAX
ldx A2osX.QC.Prefix
ldy #0
.2 inx
iny
lda SYSKERNEL,y
sta A2osX.QC.Prefix,x
cpy SYSKERNEL
bne .2
stx A2osX.QC.Prefix
>LDAXI A2osX.QC.Prefix
jsr A2osX.QC.PrintAX
jsr MLI
.DA #MLIOPEN
.DA MLIOPEN00
bcs .9
lda MLIOPEN00+5
sta MLIREAD00+1
sta MLICLOSE00+1
jsr MLI
.DA #MLIREAD
.DA MLIREAD00
php
pha
jsr MLI
.DA #MLICLOSE
.DA MLICLOSE00
pla
plp
bcc .9
>LDAXI MSG.KLOAD.KO
jsr A2osX.QC.PrintAX
.9 rts
*--------------------------------------
A2osX.QC.PrintAX
sta TmpPtr1
stx TmpPtr1+1
lda (TmpPtr1)
tax
beq .9
ldy #1
.1 lda (TmpPtr1),y
ora #$80
jsr COUT
iny
dex
bne .1
.9 jsr CROUT
rts
*--------------------------------------
MLISETPREFIX00 .DA #1
.DA A2osX.QC.Prefix
*--------------------------------------
MLIOPEN00 .DA #3
.DA A2osX.QC.Prefix
.DA $C00
.BS 1
*--------------------------------------
MLIREAD00 .DA #4
.BS 1
.DA $2000
.DA $8000
.BS 2
*--------------------------------------
MLICLOSE00 .DA #1
.BS 1
*--------------------------------------
SYSKERNEL >PSTR "SYS/KERNEL"
*--------------------------------------
MSG.INIT1 >PSTR "A2osX[Stage1]:Init"
MSG.SETPREFIXOK >PSTR "Set Prefix OK"
MSG.SETPREFIXKO >PSTR "Insert Vol:"
MSG.KLOAD >PSTR "Loading Kernel..."
MSG.KLOAD.KO >PSTR "Error While Loading Kernel."
MSG.INIT1OK >PSTR "A2osX[Stage1]:Complete."
*--------------------------------------
.BS $1300-*
.EP
*--------------------------------------
MAN
SAVE /A2OSX.SRC/A2OSX.S.QC
LOAD /A2OSX.SRC/A2OSX.S
ASM