mirror of https://github.com/A2osX/A2osX.git
175 lines
3.4 KiB
Plaintext
175 lines
3.4 KiB
Plaintext
PR#3
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PREFIX /A2OSX.BOOT
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DELETE A2OSX.SYSTEM
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PREFIX /A2OSX.SRC
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NEW
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INC 1
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AUTO 8
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.LIST OFF
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*--------------------------------------
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* ****** START OF MLI QUIT CODE ******
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* Load Address :$1000-$12FF
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*--------------------------------------
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MLIOPEN00.PATH .EQ $200
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MLIOPEN00.BUFF .EQ $0C00 1k Buffer for MLI open
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MLIREAD00.ADDR .EQ $2000 for loading KERNEL
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*--------------------------------------
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.PH $1000
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*--------------------------------------
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* Kernel Stage 1
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*--------------------------------------
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A2osX.QC.Start .EQ *
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A2osX.QC cld
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jmp A2osX.QC.Start1
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A2osX.QC.Prefix .BS 64
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A2osX.QC.Start1 sei
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ldx #$FF
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txs
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cli
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bit RROMBNK1
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>LDYAI A2osX.QC
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>STYA POWERUP
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jsr SETPWRC
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ldx #$17
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.1 stz MEMTABL,x Reset ProDOS memory bitmap
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dex
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bpl .1
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lda #$CF protect zero page, stack and page 1
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sta MEMTABL
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lda #$07
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sta MEMTABL+$17 protect ProDOS & A2osX global page
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lda #$8C Reset 80 col screen ($0C=FF=HOME)
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jsr $C300
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>LDAXI MSG.INIT1
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jsr A2osX.QC.PrintAX
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.3 jsr MLI
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.DA #MLISETPREFIX
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.DA MLISETPREFIX00
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bcc .4
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>LDAXI MSG.SETPREFIXKO
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jsr A2osX.QC.PrintAX
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>LDAXI A2osX.QC.Prefix
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jsr A2osX.QC.PrintAX
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>DEBUGOA
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bra .3
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.4 >LDAXI MSG.SETPREFIXOK
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jsr A2osX.QC.PrintAX
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>LDAXI MSG.KLOADING
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jsr A2osX.QC.PrintAX
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jsr A2osX.QC.KLoad
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bcs .9
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* >LDYAI GO.Reset
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* >STYA POWERUP
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* bit RROMBNK1
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* jsr SETPWRC
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>LDAXI MSG.INIT1OK
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jsr A2osX.QC.PrintAX
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>DEBUGOA
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jmp $2000
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.9 >LDAXI MSG.KLOADING.KO
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jsr A2osX.QC.PrintAX
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bra *
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*--------------------------------------
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A2osX.QC.KLoad ldx A2osX.QC.Prefix
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.1 lda A2osX.QC.Prefix,x
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sta MLIOPEN00.PATH,x
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dex
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bne .1
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ldx A2osX.QC.Prefix
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ldy #0
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.2 lda SYSKERNEL+1,y
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sta MLIOPEN00.PATH+1,x
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inx
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iny
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cpy SYSKERNEL
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bne .2
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stx MLIOPEN00.PATH
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>LDAXI MLIOPEN00.PATH
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jsr A2osX.QC.PrintAX
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jsr MLI
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.DA #MLIOPEN
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.DA MLIOPEN00
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bcs .9
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lda MLIOPEN00+5
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sta MLIREAD00+1
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sta MLICLOSE00+1
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jsr MLI
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.DA #MLIREAD
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.DA MLIREAD00
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bcs .9
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jsr MLI
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.DA #MLICLOSE
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.DA MLICLOSE00
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.9 rts
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*--------------------------------------
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A2osX.QC.PrintAX
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>STAX TmpPtr1
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lda (TmpPtr1)
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tax
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beq .9
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ldy #1
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.1 lda (TmpPtr1),y
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ora #$80
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jsr COUT
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iny
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dex
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bne .1
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.9 jsr CROUT
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rts
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*--------------------------------------
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MLISETPREFIX00 .DA #1
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.DA A2osX.QC.Prefix
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MLIOPEN00 .DA #3
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.DA MLIOPEN00.PATH
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.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
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*--------------------------------------
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SYSKERNEL >PSTR "SYS/KERNEL"
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*--------------------------------------
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MSG.INIT1 >PSTR "A2osX[Stage1]:Init"
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MSG.SETPREFIXOK >PSTR "Set Prefix OK"
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MSG.SETPREFIXKO >PSTR "Insert Vol:"
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MSG.KLOADING >PSTR "Loading Kernel..."
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MSG.KLOADING.KO >PSTR "Error While Loading Kernel."
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MSG.INIT1OK >PSTR "A2osX[Stage1]:Complete."
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*--------------------------------------
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.BS $1300-*
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.EP
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*--------------------------------------
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MAN
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SAVE A2OSX.S.QC
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LOAD A2OSX.S
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ASM
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